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DC-202 xDSL/Cable Broadband router
BroadbandRouter
DC202
Full Manual
DC-202 xDSL/Cable Broadband router
Table of Contents
REQUIREMENTS...............................................................................4
INTRODUCTION...............................................................................4
DC-202 Features........................................................................4
Internet Access Features..........................................................4
Advanced Internet Functions ....................................................5
LAN Features..........................................................................5
Configuration & Management....................................................5
Security Features....................................................................6
SETTING UP THE BROADBAND ROUTER...........................................7
Physical installation...................................................................7
Top LEDs ...............................................................................9
Rear Panel ...........................................................................10
PC SETUP.......................................................................................11
Set up TCP/IP..........................................................................11
Using DHCP.......................................................................... 11
Windows 98/ME.................................................................... 11
Windows 2000/XP................................................................. 11
Windows NT......................................................................... 13
Macintosh Clients.................................................................. 14
Linux Clients ........................................................................ 14
Internet access........................................................................15
Windows 98/ME/2000............................................................ 15
Windows XP ......................................................................... 15
Accessing AOL...................................................................... 15
Manual configuration – Internet access...................................16
Your country/ISP is not listed .................................................19
Cable Internet ...................................................................... 19
xDSL Internet....................................................................... 24
Home Screen ....................................................................... 30
LAN Screen ..............................................................................31
DHCP .................................................................................. 32
Password Screen .....................................................................33
OPERATION AND STATUS..............................................................34
Operation.................................................................................34
Status Screen...........................................................................34
Connection Status - PPPoE.......................................................36
Connection Status - PPTP ........................................................37
Connection Status - L2TP.........................................................38
Connection Details - Fixed/Dynamic IP Address......................40
ADVANCED FEATURES ...................................................................41
Overview .................................................................................41
Advanced Internet Screen .......................................................42
Communication Applications ................................................... 42
Special Applications............................................................... 43
Special Applications Screen .................................................... 43
Using a Special Application..................................................... 44
Multi-DMZ............................................................................ 44
DC-202 xDSL/Cable Broadband router
3
URL Filter............................................................................. 45
URL Filter Screen .................................................................. 45
Access Control .........................................................................47
Overview ............................................................................. 47
Access Control Screen ........................................................... 47
Group Members Screen.......................................................... 49
Default Schedule Screen ........................................................ 50
Services Screen.................................................................... 51
Access Control Log................................................................ 52
Remote Management ...............................................................53
Virtual Servers.........................................................................54
IP Address seen by Internet Users........................................... 54
Virtual Servers Screen........................................................... 54
Defining your own Virtual Servers ........................................... 56
Connecting to the Virtual Servers............................................ 57
Dynamic DNS (Domain Name Server)......................................58
Dynamic DNS Screen ............................................................ 58
Upgrade Firmware ...................................................................60
Config File................................................................................61
PC Database.............................................................................62
PC Database Screen .............................................................. 62
PC Database (Admin) ............................................................ 63
Network Diagnostics................................................................66
Options ....................................................................................67
Security ...................................................................................69
Logs.........................................................................................71
MAC Address............................................................................73
MAC Address Screen ............................................................. 73
Routing....................................................................................74
Overview ............................................................................. 74
Routing Screen..................................................................... 74
Configuring Other Routers on your LAN.................................... 76
Static Routing - Example........................................................ 77
APPENDIX A TROUBLESHOOTING..................................................78
Overview .................................................................................78
General Problems ....................................................................78
Internet Access........................................................................79
APPENDIX B SPECIFICATIONS ......................................................80
Multi-Function DC-202 Broadband Router ...............................80
FCC Statement .........................................................................80
FCC Radiation Exposure Statement.......................................... 81
CE Marking Warning.............................................................. 81
DC-202 xDSL/Cable Broadband router
4
Requirements
Cable modem or DSL/ADSL modem.
Standard 10/100BaseT (UTP) network cables with RJ45 connectors.
PCs that make use of the TCP/IP network protocol.
Introduction
Congratulations on the purchase of your new DC-202 Broadband Router.
The DC-202 is a multi-function device providing the following services:
Shared Broadband Internet Access for all LAN users.
4-Port Switching Hub for 10BaseT or 100BaseT connections.
DC-202 Features
The DC-202 incorporates many advanced features, carefully designed to
provide sophisticated functions while being easy to use.
Internet Access Features
Shared Internet Access. All users on the LAN or WLAN can access
the Internet through the DC-202, using only a single external IP Ad-
dress. The local (invalid) IP Addresses are hidden from external
sources. This process is called NAT (Network Address Translation).
DSL & Cable Modem Support. The DC-202 has a 10/100BaseT
Ethernet port for connecting a DSL or Cable Modem. All popular DSL
and Cable Modems are supported. SingTel RAS and Big Pond (Australia)
login support is also included.
Supports all Connection Methods. The Internet (WAN port) connec-
tion supports PPPoE (PPP over Ethernet), PPTP (Peer-to-Peer Tunneling
Protocol), L2TP (Level 2 Tunneling Protocol), SingTel RAS and Telstra
Big Pond (Australia), as well as “Direct Connection” type services.
Fixed or Dynamic IP Address. On the Internet (WAN port) connec-
tion, the DC-202 supports both Dynamic IP Address (IP Address is
allocated on connection) and Fixed IP Address.
DC-202 xDSL/Cable Broadband router
5
Advanced Internet Functions
Communication Applications. Support for Internet communication
applications, such as interactive Games, Telephony, and Conferencing
applications, which are often difficult to use when behind a Firewall, is
included.
Special Internet Applications. Applications which use non-standard
connections or port numbers are normally blocked by the Firewall. The
ability to define and allow such applications is provided, to enable such
applications to be used normally.
Virtual Servers. This feature allows Internet users to access Internet
servers on your LAN. The required setup is quick and easy.
DMZ. One (1) PC on your local LAN can be configured to allow unre-
stricted 2-way communication with Servers or individual users on the
Internet. This provides the ability to run programs which are incom-
patible with Firewalls.
URL Filter. Use the URL Filter to block access to undesirable Web sites
by LAN users.
Internet Access Log. See which Internet connections have been
made.
Access Control. Using the Access Control feature, you can assign LAN
users to different groups, and determine which Internet services are
available to each group.
VPN Pass through Support. PCs with VPN (Virtual Private Network-
ing) software using PPTP, L2TP and IPSec are transparently supported -
no configuration is required.
LAN Features
4-Port Switching Hub. The DC-202 incorporates a 4-port
10/100BaseT switching hub, making it easy to create or extend your
LAN.
DHCP Server Support. Dynamic Host Configuration Protocol provides
a dynamic IP address to PCs and other devices upon request. The DC-
202 can act as a DHCP Server for devices on your local LAN and
WLAN.
Multi Segment LAN Support. LANs containing one or more segments
are supported, via the DC-202's RIP (Routing Information Protocol)
support and built-in static routing table.
Configuration & Management
Easy Setup. Use your WEB browser from anywhere on the LAN for
configuration.
Configuration File Upload/Download. Save (download) the con-
figuration data from the DC-202 to your PC, and restore (upload) a
previously-saved configuration file to the DC-202.
Remote Management. The DC-202 can be managed from any PC on
your LAN. And, if the Internet connection exists, it can also (optionally)
be configured via the Internet.
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UPnP Support. UPnP (Universal Plug and Play) allows automatic dis-
covery and configuration of the DC-202. UPnP is by supported by
Windows ME, XP, or later.
Security Features
Password - protected Configuration. Optional password protection
is provided to prevent unauthorized users from modifying the configu-
ration data and settings.
NAT Protection. An intrinsic side effect of NAT (Network Address
Translation) technology is that by allowing all LAN users to share a sin-
gle IP address, the location and even the existence of each PC is
hidden. From the external viewpoint, there is no network, only a single
device - the DC-202.
Stateful Inspection Firewall. All incoming data packets are moni-
tored and all incoming server requests are filtered, thus protecting your
network from malicious attacks from external sources.
Protection against DoS attacks. DoS (Denial of Service) attacks can
flood your Internet connection with invalid packets and connection re-
quests, using so much bandwidth and so many resources that Internet
access becomes unavailable. The DC-202 incorporates protection
against DoS attacks.
DC-202 xDSL/Cable Broadband router
7
Setting up the broadband router
Physical installation
1. For the installation of the Broadband router it is assumed that you have
at least one PC with a working broadband Internet connection. It is also
assumed that the modem is configured in accordance with the require-
ments of your ISP and of the modem manufacturer. If not, first consult
the manual of your ISP.
2. Before you begin, check that power is not connected to either the
broadband router or the cable modem/DSL modem. Leave your cable
modem/DSL modem plugged in (telephone line or cable input).
Installation - DC-202
3. Connect the LAN cables: For the DC-202, use standard LAN cables to
connect the PCs to the LAN ports (hub) on the broadband router. If
necessary connect the "Uplink" port to a standard port on another hub.
You must use a standard LAN cable for this.
Note: If you use the "Uplink" port, then port 4 CANNOT be used.
4. Connect your cable modem/DSL modem to the WAN-port on the broad-
band router. Use the cable supplied with your cable modem/DSL
modem. If no cable was supplied with your modem, use a standard
network cable.
DC-202 xDSL/Cable Broadband router
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5. Switch on the cable modem/DSL modem.
6. Connect the power supply adapter to the broadband router. Use only
the adapter supplied with the router.
7. Check de LEDs
The Power LED must be ON.
The Status LED must start flashing, after which it must be extin-
guished. If it remains on, this indicates that there is a hardware
problem.
The WAN LED must be ON.
For each active LAN connection, the associated LAN Link/Act LED must
be ON.
DC-202 xDSL/Cable Broadband router
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Top LEDs
WAN LAN Power Status (Red)
On - Connection to
the modem attached
to the WAN (Internet)
port is established.
Flashing - Data is
being transmitted or
received via the WAN
port.
For each port, there are 2 LEDs
Link/Act
On - Corresponding LAN (hub)
port is active.
Off - No active connection on the
corresponding LAN (hub) port.
Flashing - Data is being trans-
mitted or received via the
corresponding LAN (hub) port.
100
On - Corresponding LAN (hub)
port is using 100BaseT.
Off - Corresponding LAN (hub)
port connection is using
10BaseT, or no active connec-
tion.
On - Power on.
Off - No Power.
On - Error
condition.
Off - Normal
operation.
Blinking - This
LED blinks
during start up.
DC-202 xDSL/Cable Broadband router
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Rear Panel
Reset Button WAN port
(10/100BaseT)
10/100BaseT
LAN connections
Power port
This button has two (2)
functions:
Reboot. When pressed and
released, the DC-202 will
reboot (restart).
Clear All Data. This button
can also be used to clear ALL
data and restore ALL set-
tings to the factory default
values.
To Clear All Data and
restore the factory de-
fault values:
Power Off.
Hold the Reset Button down
while you Power On.
Keep holding the Reset
Button for a few seconds,
until the RED Status LED on
the front panel has flashed
TWICE.
Release the Reset Button.
The DC-202 is now using the
factory default values.
Connect the DSL
or Cable Modem
here. If your
modem came with
a cable, use the
supplied cable.
Otherwise, use a
standard LAN
cable.
Use standard LAN
cables (RJ45 connec-
tors) to connect your
PCs to these ports.
Note:
Any LAN port on the
DC-202 will automati-
cally function as an
"Uplink" port when
required. Just connect
any port to a normal
port on the other hub,
using a standard LAN
cable.
Connect the
supplied power
adapter here.
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PC Setup
Set up TCP/IP
If you are using a Fixed (specified) IP address, the following
changes are required:
The Gateway must be set to the IP address of the DC-202
The DNS should be set to the address provided by your ISP.
Using DHCP
To use DHCP, select the radio button Obtain an IP Address automatically.
This is the default Windows setting. Using this is recommended. By
default, the DC-202 will act as a DHCP Server.
Windows 98/ME
Right click the Network Neighbourhood icon on the desktop and click
Properties. The following window will be displayed:
Windows 2000/XP
Right click the My Network Places icon on the desktop and click Proper-
ties. The following window will be displayed:
Right click the Local Area Connection of the correct network card, and
then choose Properties.
DC-202 xDSL/Cable Broadband router
12
If the list that appears on screen does not include a line, such as the one
that has been selected above ("TCP/IP -> network card"), then follow the
steps indicated below for adding this line:
Click on the button "Add"
Double-click on "Protocol"
Select "Microsoft" and thereafter "TCP/IP"
Click on "OK"
Wait a few seconds, so that TCP/IP can be added. Thereafter, click on
"OK" to leave the network properties screen. Restart your PC.
Select the line “TCP/IP -> Network card” as shown above. Click on the
button Properties to obtain a window similar to the following:
Check whether the setting "Obtain an IP address automatically" has
been selected, as is illustrated above. The DHCP server in the broadband
router will now assign an IP address to the PC.
DC-202 xDSL/Cable Broadband router
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Windows NT
Select Control Panel - Network, and, on the Protocols tab, select the TCP/IP
protocol, as shown below.
Click the Properties button to see a screen like the one below.
Select the network card for your LAN.
Select the appropriate radio button - Obtain an IP address from a DHCP
Server
Restart your PC, even if you have not made any changes.
DC-202 xDSL/Cable Broadband router
14
Macintosh Clients
From your Macintosh, you can access the Internet via the DC-202. The
procedure is as follows.
1. Open the TCP/IP Control Panel.
2. Select Ethernet from the Connect via pop-up menu.
3. Select Using DHCP Server from the Configure pop-up menu. The DHCP
Client ID field can be left blank.
4. Close the TCP/IP panel, saving your settings.
Note:
If using manually assigned IP addresses instead of DHCP, the required
changes are:
Set the Router Address field to the DC-202's IP Address.
Ensure your DNS settings are correct.
Linux Clients
To access the Internet via the DC-202, it is only necessary to set the DC-
202 as the "Gateway".
Ensure you are logged in as "root" before attempting any changes.
Fixed IP Address
By default, most Unix installations use a fixed IP Address. If you wish to
continue using a fixed IP Address, make the following changes to your
configuration.
Set your "Default Gateway" to the IP Address of the DC-202.
Ensure your DNS (Name server) settings are correct.
To act as a DHCP Client (recommended)
The procedure below may vary according to your version of Linux and X -
windows shell.
1. Start your X Windows client.
2. Select Control Panel - Network
3. Select the "Interface" entry for your Network card. Normally, this will
be called "eth0".
4. Click the Edit button, set the "protocol" to "DHCP", and save this data.
5. To apply your changes
Use the "Deactivate" and "Activate" buttons, if available.
OR, restart your system.
DC-202 xDSL/Cable Broadband router
15
Internet access
Windows 98/ME/2000
In the Taskbar, click on the Start button and select Settings - Control
Panel - Internet options.
Select the tab page Connections and click on the button Settings.
Select "I want to configure my Internet connection manually" or "I
want to make a connection via a LAN network" and click on "Next >".
Select "I want to connect via a LAN network" and click on "Next >".
Check carefully that all of the checkboxes in the screen Internet con-
figuration for a LAN have not been checked.
Continue with the steps in the wizard, until the task is completed.
The configuration is now completed.
Windows XP
In the Taskbar, click on the Start button and select - Settings –
Control Panel - Internet options.
Select the tab Connections and click the Setup… button.
When the New Connection Wizard starts, click on Next.
Select Connect to internet and click on Next.
Select Set up my connection manually and click on Next.
Select Connect using a broadband connection that is always on and
click on Next.
Click on Finish to close the Wizard.
In the Taskbar, click on the Start button and select - Settings –
Control Panel - Internet options.
Select the Connections tab and click on the LAN Settings button.
Check carefully that none
of the boxes in the Local Area Network
(LAN) Settings window are checked.
The configuration is now completed.
Accessing AOL
To access AOL (America On Line) through the DC-202, the AOL for Win-
dows software must be configured to use TCP/IP network access, rather
than a dial-up connection. The configuration process is as follows:
Start the AOL for Windows communication software. Ensure that it is
Version 2.5, 3.0 or later. This procedure will not work with earlier ver-
sions.
Click the Setup button.
Select Create Location, and change the location name from "New Local-
ity" to "DC-202".
Click Edit Location. Select TCP/IP for the Network field. (Leave the
Phone Number blank.)
Click Save, then OK.
Configuration is now complete.
Before clicking "Sign On", always ensure that you are using the "DC-
202" location.
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Manual configuration – Internet access
1. Make TCP/IP settings on your PC, as described in the foregoing sec-
tion.
Do not forget to restart your PC after you have finished.
2. Using UPnP
If your Windows system supports UPnP, an icon for the DC-202 will ap-
pear in the system tray, notifying you that a new network device has
been found, and offering to create a new desktop shortcut to the
newly-discovered device.
Unless you intend to change the IP Address of the DC-202, you can
accept the desktop shortcut.
Whether you accept the desktop shortcut or not, you can always
find UPnP devices in My Network Places.
Double click the icon for the DC-202 (either on the Desktop, or in
My Network Places) to start the configuration. Proceed with step 4.
3. Start your web browser. In the Address field, enter the following:
192.168.0.1
If you can't connect
If the DC-202 does not respond, check the following:
The DC-202 is properly installed, LAN connection is OK, and it
is powered ON. You can test the connection by using the
"Ping" command:
Open the MS-DOS window or command prompt window.
Enter the command:
ping 192.168.0.1
If no response is received, either the connection is not work-
ing, or your PC's IP address is not compatible with the DC-
202's IP Address. (See next item.)
If your PC is using a fixed IP Address, its IP Address must be
within the range 192.168.0.2 to 192.168.0.254 to be compati-
ble with the DC-202's default IP Address of 192.168.0.1. Also,
the Network Mask must be set to 255.255.255.0. See Chapter
4 - PC Configuration for details on checking your PC's TCP/IP
settings.
Ensure that your PC and the DC-202 are on the same network
segment. (If you don't have a router, this must be the case.)
DC-202 xDSL/Cable Broadband router
17
4. The start up window will now be displayed. Click on Setup.
5. The Set up wizard will now be displayed; check that the modem is
connected and click on Next.
6. Select your country from the Country list. If your Country isn’t listed,
please see the next Chapter “Your Country/ISP is not listed
7. From Service, select your internet provider. Click Next.
DC-202 xDSL/Cable Broadband router
18
8. Depending on the chosen provider, you may need to enter your user
name and password and MAC address or hostname in the following
window. Then click on Next.
9. Click finish to complete the configuration. Click on Close. If Test
Internet Connection is checked, the router will test the connection
after you have clicked on finish. Wait until this test has been completed
before you click on close.
The configuration is now completed.
DC-202 xDSL/Cable Broadband router
19
Your country/ISP is not listed
Select the type of your Internet connection, (for instance cable or ADSL)
and then click on Next.
Cable Internet
Fill in the Hostname and the Domain name, if you received this
from your Internet service provider.
For some providers it will be necessary to fill in the MAC address of
the network card the Modem was attachet to originally.
If you received an username and password from your ISP, then
choose PPPoE
If you received an Server address from your provider besides an user-
name and password, then choose L2TP (Currently L2TP is only used
by a Dutch provider)
If you didn’t receive a username and password, then choose None.
DC-202 xDSL/Cable Broadband router
20
- PPPoE
Fill in your Username and your password.
Choose the Connect Behavior.
"Automatic connect/Disconnect" causes the router to connect as
soon as an application is started which require an internet connection
(i.e. MSN, ICQ, Windows update, etc.)
"Manual Connect/Disconnect" causes the router to connect only
when the user clicks ‘connect’ in the ‘Connection details’ window.
“Keep Alive” cuases the router to maintain the connection at all time.
The “Auto-disconnect Time-out periode” is the amount of time af-
ter which the router disconnects from internet.
Then click Next.
If your provider has assigned you a fixed IP address, you input this in
the field Specified IP Address and also fill in your DNS IP address.
If you have a dynamic IP address, select the option IP address is as-
signed automatically. The click Next.
Click finish to complete the configuration. Click on Close. If Test
Internet Connection is checked, the router will test the connection
after you have clicked on finish. Wait until this test has been completed
before you click on close.
DC-202 xDSL/Cable Broadband router
21
The configuration is now completed.
DC-202 xDSL/Cable Broadband router
22
- L2TP
Fill in the L2TP server IP address or Domain Name
Fill in your Username and your password.
Choose the Connect Behavior.
"Automatic connect/Disconnect" causes the router to connect as
soon as an application is started which require an internet connection
(i.e. MSN, ICQ, Windows update, etc.)
"Manual Connect/Disconnect" causes the router to connect only
when the user clicks ‘connect’ in the ‘Connection details’ window.
“Keep Alive” causes the router to maintain the connection at all time.
The “Auto-disconnect Time-out periode” is the amount of time af-
ter which the router disconnects from internet.
Then click Next.
If your provider has assigned you a fixed IP address, you input this in
the field Specified IP Address and also fill in your DNS IP address.
If you have a dynamic IP address, select the option IP address is as-
signed automatically. The click Next.
Click finish to complete the configuration. Click on Close. If Test
Internet Connection is checked, the router will test the connection
after you have clicked on finish. Wait until this test has been completed
before you click on close.
The configuration is now completed
DC-202 xDSL/Cable Broadband router
23
- NONE
If your provider has assigned you a fixed IP address, you input this in
the field Specified IP Address and also fill in your DNS IP address.
If you have a dynamic IP address, select the option IP address is as-
signed automatically. The click Next.
Click finish to complete the configuration. Click on Close. If Test
Internet Connection is checked, the router will test the connection
after you have clicked on finish. Wait until this test has been completed
before you click on close.
The configuration is now completed
DC-202 xDSL/Cable Broadband router
24
xDSL Internet
If you received an username and password from your ISP, then choose
PPPoE
If you received an Server address from your provider besides an username
and password, then choose PPTP or L2TP. Please check with your ISP
which protocol you need.(Currently L2TP is only used by a Dutch provider)
If you didn’t receive a username and password, then choose None.
DC-202 xDSL/Cable Broadband router
25
- PPPoE
Fill in your Username and your password.
Choose the Connect Behavior.
"Automatic connect/Disconnect" causes the router to connect as
soon as an application is started which require an internet connection
(i.e. MSN, ICQ, Windows update, etc.)
"Manual Connect/Disconnect" causes the router to connect only
when the user clicks ‘connect’ in the ‘Connection details’ window.
“Keep Alive” cuases the router to maintain the connection at all time.
The “Auto-disconnect Time-out periode” is the amount of time af-
ter which the router disconnects from internet.
Then click Next.
If your provider has assigned you a fixed IP address, you input this in
the field Specified IP Address and also fill in your DNS IP address.
If you have a dynamic IP address, select the option IP address is as-
signed automatically. The click Next.
Click finish to complete the configuration. Click on Close. If Test
Internet Connection is checked, the router will test the connection
after you have clicked on finish. Wait until this test has been completed
before you click on close.
DC-202 xDSL/Cable Broadband router
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The configuration is now completed.
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27
- PPTP
Fill in the PPTP server IP address or Domain Name
Fill in your Username and your password.
Choose the Connect Behavior.
"Automatic connect/Disconnect" causes the router to connect as
soon as an application is started which require an internet connection
(i.e. MSN, ICQ, Windows update, etc.)
"Manual Connect/Disconnect" causes the router to connect only
when the user clicks ‘connect’ in the ‘Connection details’ window.
“Keep Alive” causes the router to maintain the connection at all time.
The “Auto-disconnect Time-out periode” is the amount of time af-
ter which the router disconnects from internet.
Then click Next.
If your provider has assigned you a fixed IP address, you input this in
the field Specified IP Address and also fill in your DNS IP address.
If you have a dynamic IP address, select the option IP address is as-
signed automatically. The click Next.
Click finish to complete the configuration. Click on Close. If Test
Internet Connection is checked, the router will test the connection
after you have clicked on finish. Wait until this test has been completed
before you click on close.
The configuration is now completed
DC-202 xDSL/Cable Broadband router
28
- L2TP
Fill in the L2TP server IP address or Domain Name
Fill in your Username and your password.
Choose the Connect Behavior.
"Automatic connect/Disconnect" causes the router to connect as
soon as an application is started which require an internet connection
(i.e. MSN, ICQ, Windows update, etc.)
"Manual Connect/Disconnect" causes the router to connect only
when the user clicks ‘connect’ in the ‘Connection details’ window.
“Keep Alive” causes the router to maintain the connection at all time.
The “Auto-disconnect Time-out periode” is the amount of time af-
ter which the router disconnects from internet.
Then click Next.
If your provider has assigned you a fixed IP address, you input this in
the field Specified IP Address and also fill in your DNS IP address.
If you have a dynamic IP address, select the option IP address is as-
signed automatically. The click Next.
Click finish to complete the configuration. Click on Close. If Test
Internet Connection is checked, the router will test the connection
after you have clicked on finish. Wait until this test has been completed
before you click on close.
The configuration is now completed
DC-202 xDSL/Cable Broadband router
29
- NONE
If your provider has assigned you a fixed IP address, you input this in
the field Specified IP Address and also fill in your DNS IP address.
If you have a dynamic IP address, select the option IP address is as-
signed automatically. The click Next.
Click finish to complete the configuration. Click on Close. If Test
Internet Connection is checked, the router will test the connection
after you have clicked on finish. Wait until this test has been completed
before you click on close.
The configuration is now completed
DC-202 xDSL/Cable Broadband router
30
Home Screen
After finishing the Setup Wizard, you will see the Home screen. When you
connect in future, you will see this screen when you connect. An example
screen is shown below.
Navigation & Data Input
Use the menu bar on the left of the screen, and the "Back" button on
your Browser, for navigation.
Changing to another screen without clicking "Save" does NOT save any
changes you may have made. You must "Save" before changing
screens or your data will be ignored.
On each screen, clicking the "Help" button
will display help for that screen.
From any help screen, you can access the
list of all help files (help index).
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LAN Screen
Click LAN tab In the HOME menu to reach the LAN screen An example
screen is shown below.
Data - LAN Screen
TCP/IP
IP Address
IP address for the DC-202, as seen from the local LAN. Use the default
value unless the address is already in use or your LAN is using a
different IP address range. In the latter case, enter an unused IP
Address from within the range used by your LAN.
Subnet Mask
The default value 255.255.255.0 is standard for small (class "C")
networks. For other networks, use the Subnet Mask for the LAN
segment to which the DC-202 is attached (the same value as the PCs
on that LAN segment).
DHCP Server
If Enabled, the DC-202 will allocate IP Addresses to PCs (DHCP
clients) on your LAN when they start up. The default (and recom-
mended) value is Enabled.
If you are already using a DHCP Server, this setting must be
Disabled, and the existing DHCP server must be re-configured to
treat the DC-202 as the default Gateway. See the following sec-
tion for further details.
The Start IP Address and Finish IP Address fields set the
values used by the DHCP server when allocating IP Addresses to
DHCP clients. This range also determines the number of DHCP cli-
ents supported.
See the following section for further details on using DHCP.
Buttons
Save
Save the data on screen.
Cancel
The "Cancel" button will discard any data you have entered and reload
the file from the DC-202.
DC-202 xDSL/Cable Broadband router
32
DHCP
What DHCP Does
A DHCP (Dynamic Host Configuration Protocol) Server allocates a valid IP
address to a DHCP Client (PC or device) upon request.
The client request is made when the client device starts up (boots).
The DHCP Server provides the Gateway and DNS addresses to the
client, as well as allocating an IP Address.
The DC-202 can act as a DHCP server.
Windows 95/98/ME and other non-Server versions of Windows will act
as a DHCP client. This is the default Windows setting for the TCP/IP
network protocol. However, Windows uses the term Obtain an IP Ad-
dress automatically instead of "DHCP Client".
You must NOT have two (2) or more DHCP Servers on the same LAN
segment. (If your LAN does not have other Routers, this means there
must only be one (1) DHCP Server on your LAN.)
Using the DC-202's DHCP Server
This is the default setting. The DHCP Server settings are on the LAN
screen. On this screen, you can:
Enable or Disable the DC-202's DHCP Server function.
Set the range of IP Addresses allocated to PCs by the DHCP Server
function.
You can assign Fixed IP Addresses to some
devices while using DHCP, provided that the
Fixed IP Addresses are NOT within the range
used by the DHCP Server.
Using another DHCP Server
You can only use one (1) DHCP Server per LAN segment. If you wish to
use another DHCP Server, rather than the DC-202's, the following proce-
dure is required.
1. Disable the DHCP Server feature in the DC-202. This setting is on the
LAN screen.
2. Configure the DHCP Server to provide the DC-202's IP Address as the
Default Gateway.
DC-202 xDSL/Cable Broadband router
33
Password Screen
The password screen allows you to assign a password to the DC-202.
Once you have assigned a password to the DC-202 (on the Password
screen above) you will be prompted for the password when you connect, as
shown below. (If no password has been set, this dialog will not appear.)
Leave the "User Name" blank.
Enter the password for the DC-202, as set on the Password screen
above.
DC-202 xDSL/Cable Broadband router
Operation and Status
Operation
Once both the DC-202 and the PCs are configured, operation is
automatic.
However, there are some situations where additional Internet configuration
may be required:
If using Internet-based Communication Applications, it may be
necessary to specify which PC receives an incoming connection. Refer
to chapter Advanced Features for further details.
Applications which use non-standard connections or port numbers may
be blocked by the DC-202's built-in firewall. You can define such appli-
cations as Special Applications to allow them to function normally.
Refer to chapter Advanced Features for further details.
Some non-standard applications may require use of the DMZ feature.
Refer to chapter Advanced Features for further details.
Status Screen
Use the Status tab on the Home menu to view this screen.
DC-202 xDSL/Cable Broadband router
35
Data - Status Screen
Internet
Connection
Method
This indicates the current connection method, as set in the Setup
Wizard.
Broadband Mo-
dem
This shows the connection status of the modem.
Internet Con-
nection
Current connection status:
Active
Idle
Unknown
Failed
If there is an error, you can click the "Connection Details" button
to find out more information.
Internet IP Ad-
dress
This IP Address is allocated by the ISP (Internet Service Pro-
vider).
"Connection
Details"
Button
Click this button to open a sub-window and view a detailed
description of the current connection. Depending on the type of
connection, a "log" may also be available.
LAN
IP Address
The IP Address of the DC-202.
Network Mask
The Network Mask (Subnet Mask) for the IP Address above.
DHCP Server
This shows the status of the DHCP Server function - either
"Enabled" or "Disabled".
For additional information about the PCs on your LAN, and the IP
addresses allocated to them, use the PC Database option on the
Advanced menu.
System
Device Name
This displays the current name of the DC-202.
Firmware Ver-
sion
The current version of the firmware installed in the DC-202.
"System Data"
Button
Clicking this button will open a Window which lists all system
details and settings.
Buttons
Connection De-
tails
View the details of the current Internet connection. The sub-
screen displayed will depend on the connection method used. See
the following sections for details of each sub-screen.
System Data
Display all system information in a sub-window.
Restart
Clicking this button will restart (reboot) the DC-202. All existing
connections though the DC-202 will be terminated, but will
usually re-connect automatically.
Refresh Screen
Update the data displayed on screen.
DC-202 xDSL/Cable Broadband router
36
Connection Status - PPPoE
If using PPPoE (PPP over Ethernet), a screen like the following example will
be displayed when the "Connection Details" button is clicked.
Data - PPPoE Screen
Connection
Physical Address
The hardware address of this device, as seen by remote devices
on the Internet. (This is different to the hardware address seen
by devices on the local LAN.)
IP Address
The IP Address of this device, as seen by Internet users. This
address is allocated by your ISP (Internet Service Provider).
Network Mask
The Network Mask associated with the IP Address above.
PPPoE Link
Status
This indicates whether or not the connection is currently estab-
lished.
If the connection does not exist, the "Connect" button can be
used to establish a connection.
If the connection currently exists, the "Disconnect" button
can be used to break the connection.
Connection Log
Connection Log
The Connection Log shows status messages relating to the
existing connection.
The most common messages are listed in the table below.
The "Clear Log" button will restart the Log, while the Refresh
button will update the messages shown on screen.
Buttons
Connect
If not connected, establish a connection to your ISP.
Disconnect
If connected to your ISP, hang up the connection.
Clear Log
Delete all data currently in the Log. This will make it easier to
read new messages.
Refresh
Update the data on screen.
DC-202 xDSL/Cable Broadband router
37
Connection Status - PPTP
If using PPTP (Peer-to-Peer Tunneling Protocol), a screen like the following
example will be displayed when the "Connection Details" button is clicked.
Data - PPTP Screen
Connection
Physical Ad-
dress
The hardware address of this device, as seen by remote devices on
the Internet. (This is different to the hardware address seen by
devices on the local LAN.)
IP Address
The IP Address of this device, as seen by Internet users. This ad-
dress is allocated by your ISP (Internet Service Provider).
PPTP Status
This indicates whether or not the connection is currently established.
If the connection does not exist, the "Connect" button can be
used to establish a connection.
If the connection currently exists, the "Disconnect" button can
be used to break the connection.
Connection Log
Connection
Log
The Connection Log shows status messages relating to the
existing connection.
The "Clear Log" button will restart the Log, while the Refresh
button will update the messages shown on screen.
Buttons
Connect
If not connected, establish a connection to your ISP.
Disconnect
If connected to your ISP, hang up the connection.
Clear Log
Delete all data currently in the Log. This will make it easier to read
new messages.
Refresh
Update the data on screen.
DC-202 xDSL/Cable Broadband router
38
Connection Status - L2TP
If using L2TP, a screen like the following example will be displayed when
the "Connection Details" button is clicked.
Figure 1: L2TP Status Screen
Data - L2TP Screen
Connection
Physical Ad-
dress
The hardware address of this device, as seen by remote devices on
the Internet. (This is different to the hardware address seen by
devices on the local LAN.)
IP Address
The IP Address of this device, as seen by Internet users. This ad-
dress is allocated by your ISP (Internet Service Provider).
Connection
Status
This indicates whether or not the connection is currently established.
If the connection does not exist, the "Connect" button can be
used to establish a connection.
If the connection currently exists, the "Disconnect" button can
be used to break the connection.
Connection Log
Connection
Log
The Connection Log shows status messages relating to the
existing connection.
The "Clear Log" button will restart the Log, while the Refresh
button will update the messages shown on screen.
Buttons
Connect
If not connected, establish a connection to your ISP.
Disconnect
If connected to your ISP, hang up the connection.
Clear Log
Delete all data currently in the Log. This will make it easier to read
new messages.
Refresh
Update the data on screen.
DC-202 xDSL/Cable Broadband router
39
Connection Log Messages
Message Description
Connect on Demand Connection attempt has been triggered by the
"Connect automatically, as required" setting.
Manual connection Connection attempt started by the "Connect"
button.
Reset physical con-
nection
Preparing line for connection attempt.
Connecting to remote
server
Attempting to connect to the ISP's server.
Remote Server lo-
cated
ISP's Server has responded to connection at-
tempt.
Start PPP Attempting to login to ISP's Server and establish
a PPP connection.
PPP up successfully Able to login to ISP's Server and establish a PPP
connection.
Idle time-out reached The connection has been idle for the time period
specified in the "Idle Time-out" field. The connec-
tion will now be terminated.
Disconnecting The current connection is being terminated, due
to either the "Idle Time-out" above, or "Discon-
nect" button being clicked.
Error: Remote Server
not found
ISP's Server did not respond. This could be a
Server problem, or a problem with the link to the
Server.
Error: PPP Connec-
tion failed
Unable to establish a PPP connection with the
ISP's Server. This could be a login problem
(name or password) or a Server problem.
Error: Connection to
Server lost
The existing connection has been lost. This could
be caused by a power failure, a link failure, or
Server failure.
Error: Invalid or
unknown packet type
The data received from the ISP's Server could
not be processed. This could be caused by data
corruption (from a bad link), or the Server using
a protocol which is not supported by this device.
DC-202 xDSL/Cable Broadband router
40
Connection Details - Fixed/Dynamic IP Address
If your access method is "Direct" (no login), a screen like the following
example will be displayed when the "Connection Details" button is clicked.
Data - Fixed/Dynamic IP address Screen
Internet
Physical Ad-
dress
The hardware address of this device, as seen by remote devices on
the Internet. (This is different to the hardware address seen by
devices on the local LAN.)
IP Address
The IP Address of this device, as seen by Internet users. This ad-
dress is allocated by your ISP (Internet Service Provider).
Network Mask
The Network Mask associated with the IP Address above.
Default Gate-
way
The IP Address of the remote Gateway or Router associated with the
IP Address above.
DNS IP Ad-
dress
The IP Address of the Domain Name Server which is currently used.
DHCP Client
This will show "Enabled" or "Disabled", depending on whether or not
this device is functioning as a DHCP client.
If "Enabled" the "Remaining lease time" field indicates when the IP
Address allocated by the DHCP Server will expire. The lease is
automatically renewed on expiry; use the "Renew" button if you wish
to manually renew the lease immediately.
Buttons
Re-
lease/Renew
Button will
display
EITHER
"Release"
OR
"Renew"
This button is only useful if the IP address shown above is allocated
automatically on connection. (Dynamic IP address). If you have a
Fixed (Static) IP address, this button has no effect.
If the ISP's DHCP Server has NOT allocated an IP Address for
the DC-202, this button will say "Renew". Clicking the "Renew"
button will attempt to re-establish the connection and obtain an
IP Address from the ISP's DHCP Server.
If an IP Address has been allocated to the DC-202 (by the ISP's
DHCP Server), this button will say "Release". Clicking the "Re-
lease" button will break the connection and release the IP
Address.
Refresh
Update the data shown on screen.
DC-202 xDSL/Cable Broadband router
Advanced Features
Overview
The following advanced features are provided.
Advanced Internet
Communication Applications
Special Applications
Multi-DMZ
URL Filter
Access Control
Remote Management
Virtual Servers
Dynamic DNS
Upgrade Firmware
Config File
PC Database
Network Diagnostics
Options
Security
Logs
MAC Address
Routing
These features are all available from the Advanced menu. This Chapter
provides details of each feature.
DC-202 xDSL/Cable Broadband router
42
Advanced Internet Screen
This screen allows configuration of all advanced features relating to Inter-
net access.
Communication Applications
Special Applications
Multi-DMZ
URL filter
An example screen is shown below.
Communication Applications
Most applications are supported transparently by the DC-202. But some-
times it is not clear which PC should receive an incoming connection. This
problem could arise with the Communication Applications listed on this
screen.
If this problem arises, you can use this screen to set which PC should
receive an incoming connection, as described below.
DC-202 xDSL/Cable Broadband router
43
Data - Communication Applications
Select an Appli-
cation
This lists applications which may generate incoming connections,
where the destination PC (on your local LAN) is unknown.
Send incoming
calls to
This lists the PCs on your LAN.
If necessary, you can add PCs manually, using the "PC
Database" option on the advanced menu.
For each application listed above, you can choose a destina-
tion PC.
There is no need to "Save" after each change; you can set
the destination PC for each application, then click "Save".
Special Applications
If you use Internet applications which use non-standard connections or
port numbers, you may find that they do not function correctly because
they are blocked by the DC-202's firewall. In this case, you can define the
application as a "Special Application".
Special Applications Screen
This screen can be reached by clicking the Special Applications button on
the Internet screen.
You can then define your Special Applications. You will need detailed infor-
mation about the application; this is normally available from the supplier of
the application.
Also, note that the terms "Incoming" and "Outgoing" on this screen refer to
traffic from the client (PC) viewpoint
DC-202 xDSL/Cable Broadband router
44
Data - Special Applications Screen
Check-
box
Use this to Enable or Disable this Special Application as required.
Name
Enter a descriptive name to identify this Special Application.
Incom-
ing
Ports
Type - Select the protocol (TCP or UDP) used when you receive data
from the special application or service. (Note: Some applications use
different protocols for outgoing and incoming data).
Start - Enter the beginning of the range of port numbers used by the
application server, for data you receive. If the application uses a single
port number, enter it in both the "Start" and "Finish" fields.
Finish - Enter the end of the range of port numbers used by the
application server, for data you receive.
Outgoing
Ports
Type - Select the protocol (TCP or UDP) used when you send data to
the remote system or service.
Start - Enter the beginning of the range of port numbers used by the
application server, for data you send to it. If the application uses a sin-
gle port number, enter it in both the "Start" and "Finish" fields.
Finish - Enter the end of the range of port numbers used by the
application server, for data you send to it. If the application uses a sin-
gle port number, enter it in both the "Start" and "Finish" fields.
Using a Special Application
Configure the Special Applications screen as required.
On your PC, use the application normally. Remember that only one (1)
PC can use each Special application at any time. Also, when 1 PC is fin-
ished using a particular Special Application, there may need to be a
"Time-out" before another PC can use the same Special Application.
The "Time-out" period may be up to 3 minutes.
If an application still cannot function
correctly, try using the "DMZ" feature.
Multi-DMZ
This feature, if enabled, allows one (1) or more computers on your LAN to
be exposed to all users on the Internet.
If you only have 1 WAN IP addresses, only DMZ 1 can be used. This
uses the primary IP address (which may be dynamic), so you do not
have to enter it.
If you have multiple WAN IP addresses, you can specify a DMZ PC for
each IP address. You must enter the other WAN IP addresses which are
allocated to you.
The DMZ feature allows unrestricted 2-way communication between the
"DMZ PC" and other Internet users or Servers.
This allows almost any application to be used on the "DMZ PC".
The "DMZ PC" will receive all "Unknown" connections and data sent to
the corresponding IP address from the Internet.
DC-202 xDSL/Cable Broadband router
45
If the DMZ feature is enabled, you must select the PC to be used as the
"DMZ PC".
The "DMZ PC" is effectively outside the Fire-
wall, making it more vulnerable to attacks. For
this reason, you should only enable the DMZ
feature when required.
URL Filter
The URL Filter allows you to block access to undesirable Web site
To use this feature, you must define "filter strings". If the "filter string"
appears in a requested URL, the request is blocked.
Enabling the URL Filter also affects the Internet Access Log. If Enabled,
the "Destination" field in the log will display the URL. Otherwise, it will
display the IP Address.
The URL Filter can be Enabled or Disabled on the Advanced Internet
screen.
URL Filter Screen
Click the "Configure URL Filter" button on the Internet screen to access the
URL Filter screen. An example screen is shown below.
DC-202 xDSL/Cable Broadband router
46
Data - URL Filter Screen
Filter Strings
Current
Entries
This lists any existing entries. If you have not entered any values, this
list will be empty.
Add Filter
String
To add an entry to the list, enter it here, and click the "Add" button.
An entry may be a Domain name (e.g. www.trash.com) or simply a
string. (e.g. ads/ )
Any URL which contains ANY entry ANYWHERE in the URL will be
blocked.
Buttons
De-
lete/Delete
All
Use these buttons to delete the selected entry or all entries, as re-
quired. Multiple entries can be selected by holding down the CTRL key
while selecting.(On the Macintosh, hold the SHIFT key while selecting.)
Add
Use this to add the current Filter String to the site list.
DC-202 xDSL/Cable Broadband router
47
Access Control
This feature is accessed by the Access Control link on the Advanced menu.
Overview
The Access Control feature allows administrators to restrict the level of
Internet Access available to PCs on your LAN. With the default settings,
everyone has unrestricted Internet access.
To use this feature:
1. Set the desired restrictions on the "Default" group. All PCs are in the
"Default" group unless explicitly moved to another group.
2. Set the desired restrictions on the other groups ("Group 1", "Group 2",
"Group 3" and "Group 4") as needed.
3. Assign PC to the groups as required.
Restrictions are imposed by blocking "Services", or
types of connections. All common Services are pre-
defined.
If required, you can also define your own Services.
Access Control Screen
To view this screen, select the Access Control link on the Advanced menu.
DC-202 xDSL/Cable Broadband router
48
Data - Access Control Screen
Group
Group
Select the desired Group. The screen will update to display the
settings for the selected Group. Groups are named "Default",
"Group 1", "Group 2", "Group 3" and "Group 4", and cannot be re-
named.
"Members"
Button
Click this button to add or remove members from the current
Group.
If the current group is "Default", then members can not be
added or deleted. This group contains PCs not allocated to any
other group.
To remove PCs from the Default Group, assign them to an-
other Group.
To assign PCs to the Default Group, delete them from the
Group they are currently in.
See the following section for details of the Group Members screen.
Internet Access
Restrictions
Select the desired options for the current group:
None - Nothing is blocked. Use this to create the least restric-
tive group.
Block all Internet access - All traffic via the WAN port is
blocked. Use this to create the most restrictive group.
Block selected Services - You can select which Services are
to block. Use this to gain fine control over the Internet access
for a group.
DC-202 xDSL/Cable Broadband router
49
Block by
Schedule
If Internet access is being blocked, you can choose to apply the
blocking only during scheduled times. (If access is not blocked, no
Scheduling is possible, and this setting has no effect.)
Define Sched-
ule Button
Clicking this will open a sub-window where you can define or
modify the Schedule.
Services
This lists all defined Services. Select the Services you wish to
block. To select multiple services, hold the CTRL key while select-
ing. (On the Macintosh, hold the SHIFT key rather than CTRL.)
Edit Service
List Button
If you wish to define additional Services, or manage the Service
list, click this button to open the "Services" screen.
Buttons
Members
Click this button to add or remove members from the current
Group.
If the current group is "Default", then members can not be added
or deleted. This group contains PCs not allocated to any other
group.
See the following section for details of the Group Members screen.
Define Sched-
ule
Click this to open a sub-window where you can define or modify
the Schedule.
Edit Service
List
If you wish to define additional Services, or manage the Service
list, click this button to open the "Services" screen.
Save
Save the data on screen.
Cancel
Reverse any changes made since the last "Save".
View Log
Click this to open a sub-window where you can view the "Access
Control" log. This log shows attempted Internet accesses which
have been blocked by the Access Control feature.
Clear Log
Click this to clear and restart the "Access Control" log, making new
entries easier to read.
Refresh
Update the data on screen.
Group Members Screen
This screen is displayed when the Members button on the Access Control
screen is clicked.
Use this screen to add or remove members (PCs) from the current group.
DC-202 xDSL/Cable Broadband router
50
The "Del >>" button will remove the selected PC (in the Members list)
from the current group.
The "<< Add" button will add the selected PC (in the Other PCs list) to
the current group.
PCs not assigned to any group will be in
the "Default" group.
PCs deleted from any other Group will be
added to the "Default" group.
Default Schedule Screen
This screen is displayed when the Define Schedule button on the Access
Control screen is clicked.
This schedule can be (optionally) applied to any Access Control Group.
Blocking will be performed during the scheduled time (between the
"Start" and "Finish" times.)
Two (2) separate sessions or periods can be defined.
Times must be entered using a 24 hr clock.
If the time for a particular day is blank, no action will be performed.
Data - Default Schedule Screen
Day Each day of the week can scheduled independently.
Session 1
Session 2
Two (2) separate sessions or periods can be defined.
Session 2 can be left blank if not required.
DC-202 xDSL/Cable Broadband router
51
Start Enter the start using a 24 hr clock.
Finish Enter the finish time using a 24 hr clock.
Services Screen
This screen is displayed when the Edit Service List button on the Access
Control screen is clicked.
Data - Services Screen
Available Services
Available
Services
This lists all the available services.
"Delete" but-
ton
Use this to delete any Service you have added. Pre-defined Services
can not be deleted.
Add New Service
Name
Enter a descriptive name to identify this service.
Type
Select the protocol (TCP, UDP, ICMP) used to the remote system or
service.
Start Port
For TCP and UDP Services, enter the beginning of the range of port
numbers used by the service. If the service uses a single port num-
ber, enter it in both the "Start" and "Finish" fields.
Finish Port
For TCP and UDP Services, enter the end of the range of port num-
bers used by the service. If the service uses a single port number,
enter it in both the "Start" and "Finish" fields.
ICMP Type
For ICMP Services, enter the type number of the required service.
DC-202 xDSL/Cable Broadband router
52
Buttons
Delete
Delete the selected service from the list.
Add
Add a new entry to the Service list, using the data shown in the "Add
New Service" area on screen.
Cancel
Clear the " Add New Service " area, ready for entering data for a
new Service.
Access Control Log
To check the operation of the Access Control feature, an Access Control
Log is provided. Click the View Log button on the Access Control screen to
view this log.
This log shows attempted Internet accesses which have been blocked by
the Access Control function.
Data shown in this log is as follows:
Date/Time Date and Time of the attempted access.
Name If known, the name of the PC whose access was
blocked. This name is taken from the Network Clients
database
Source IP ad-
dress
The IP Address of the PC or device whose access
request was blocked
MAC address The hardware or physical address of the PC or device
whose access request was blocked
Destination The destination URL or IP address
DC-202 xDSL/Cable Broadband router
53
Remote Management
If enabled, this feature allows you to manage the DC-202 via the Internet.
Figure 2: Remote Management Screen
Data - Remote Management Screen
Remote Administration
Enable Re-
mote
Management
Enable to allow management via the Internet. If Disabled, this device
will ignore management connection attempts from the Internet.
Port Number
Enter a port number between 1024 and 65535 (8080 is recom-
mended). This port number must be specified when you connect (see
below).
Note: The default port number for HTTP (Web) connections is port
80, but using port 80 here will prevent the use of a Web "Virtual
Server" on your LAN. (See Advanced Internet - Virtual Servers)
Current IP
Address
You must use this IP Address to connect (see below).
This IP Address is allocated by your ISP. But if using a Dynamic IP
Address, this value can change each time you connect to your ISP.
So it is better if your ISP allocates you a Fixed IP Address.
To connect from a remote PC via the Internet
1. Ensure your Internet connection is established, and start your Web
Browser.
2. In the "Address" bar, enter "HTTP://" followed by the Internet IP Ad-
dress of the DC-202. If the port number is not 80, the port number is
also required. (After the IP Address, enter ":" followed by the port
number.)
e.g.
HTTP://123.123.123.123:8080
This example assumes the WAN IP Address is 123.123.123.123, and the
port number is 8080.
DC-202 xDSL/Cable Broadband router
54
Virtual Servers
This feature, sometimes called "Port Forwarding", allows you to make
Servers on your LAN accessible to Internet users. Normally, Internet users
would not be able to access a server on your LAN because:
Your Server does not have a valid external IP Address.
Attempts to connect to devices on your LAN are blocked by the firewall
in this device.
The "Virtual Server" feature solves these problems and allows Internet
users to connect to your servers, as illustrated below.
IP Address seen by Internet Users
Note that, in this illustration, both Internet users are connecting to the
same IP Address, but using different protocols.
To Internet users, all virtual Servers on your LAN have the same IP
Address. This IP Address is allocated by your ISP.
This address should be static, rather than dynamic, to make it easier for
Internet users to connect to your Servers.
However, you can use the DDNS (Dynamic DNS) feature to allow users to
connect to your Virtual Servers using a URL, instead of an IP Address.
Virtual Servers Screen
The Virtual Servers screen is reached by the Virtual Servers link on the
Advanced screen. An example screen is shown below.
DC-202 xDSL/Cable Broadband router
55
This screen lists a number of pre-defined Servers, and allows you to define
your own Servers. Details of the selected Server are shown in the "Proper-
ties" area.
Data - Virtual Servers Screen
Servers
Servers
This lists a number of pre-defined Servers, plus any Servers you
have defined. Details of the selected Server are shown in the
"Properties" area.
Properties
Enable
Use this to Enable or Disable support for this Server, as required.
If Enabled, any incoming connections will be forwarded to the
selected PC.
If Disabled, any incoming connection attempts will be blocked.
PC (Server)
Select the PC for this Server. The PC must be running the appro-
priate Server software.
Protocol
Select the protocol (TCP or UDP) used by the Server.
Internal (LAN)
Ports
Enter the port number which the Server software is configured to
use.
External
(WAN) Ports
The port number used by Internet users when connecting to the
Server. This is normally the same as the Internal Port Number. If it
is different, this device will perform a "mapping" or "translation"
function, allowing the server to use one port address, while clients
use a different port address.
DC-202 xDSL/Cable Broadband router
56
Buttons
Defaults
This will delete any Servers you have defined, and set the pre-
defined Servers to use their default port numbers.
Disable All
This will cause the "Enable" setting of all Virtual Servers to be set
OFF.
Update Se-
lected Server
Update the current Virtual Server entry, using the data shown in
the "Properties" area on screen.
Add as new
Server
Add a new entry to the Virtual Server list, using the data shown in
the "Properties" area on screen. The entry selected in the list is
ignored, and has no effect.
Delete
Delete the current Virtual Server entry. Note that the pre-defined
Servers can not be deleted. Only Servers you have defined yourself
can be deleted.
Clear Form
Clear all data from the "Properties" area, ready for input of a new
Virtual Server entry.
For each entry, the PC must be run-
ning the appropriate Server
software.
Defining your own Virtual Servers
If the type of Server you wish to use is not listed on the Virtual Servers
screen, you can define and manage your own Servers:
Create a new
Server:
1. Click "Clear Form"
2. Enter the required data, as described above.
3. Click "Add".
4. The new Server will now appear in the list.
Modify (Edit) a
Server:
1. Select the desired Server from the list
2. Make any desired changes (for example, change the
Enable/Disable setting).
3. Click "Update" to save changes to the selected Server.
Delete a Server:
1. Select the entry from the list.
2. Click "Delete".
Note: You can only delete Servers you have defined. Pre-
defined Server cannot be deleted.
From the Internet, ALL Virtual Servers
have the IP Address allocated by your
ISP.
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57
Connecting to the Virtual Servers
Once configured, anyone on the Internet can connect to your Virtual Serv-
ers. They must use the Internet IP Address (the IP Address allocated to
you by your ISP).
e.g.
http://203.70.212.52
ftp://203.70.212.52
It is more convenient if you are using a Fixed IP Address from your ISP,
rather than Dynamic. However, you can use the Dynamic DNS feature,
described in the following section, to allow users to connect to your Virtual
Servers using a URL, rather than an IP Address.
DC-202 xDSL/Cable Broadband router
58
Dynamic DNS (Domain Name Server)
This free service is very useful when combined with the Virtual Server
feature. It allows Internet users to connect to your Virtual Servers using a
URL, rather than an IP Address.
This also solves the problem of having a dynamic IP address. With a dy-
namic IP address, your IP address may change whenever you connect,
which makes it difficult to connect to you.
The Service works as follows:
1. You must register for the service at http://www.dyndns.org (Registra-
tion is free). Your password will be E-mailed to you.
2. After registration, use the "Create New Host" option (at
www.dyndns.org) to request your desired Domain name.
3. Enter your data from www.dyndns.org in the DC-202's DDNS screen.
4. The DC-202 will then automatically ensure that your current IP Address
is recorded at http://www.dyndns.org
5. From the Internet, users will be able to connect to your Virtual Servers
(or DMZ PC) using your Domain name, as shown on this screen.
Dynamic DNS Screen
Select Advanced on the main menu, then Dynamic DNS, to see a screen
like the following:
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59
Data - Dynamic DNS Screen
DDNS Service
DDNS Service
You must register for the service at one of the
listed Service Providers. You can reach the Service
provider's Web Site by selecting them in the list
and clicking the "Web Site" button.
Apply for a Domain Name, and ensure it is allo-
cated to you.
Details of your DDNS account (Name, password,
Domain name) must then be entered and saved on
this screen.
This device will then automatically ensure that your
current IP Address is recorded by the DDNS Ser-
vice Provider. (You do NOT need to use the "Client"
program provided by some DDNS Service provid-
ers.)
From the Internet, users will now be able to con-
nect to your Virtual Servers (or DMZ PC) using
your Domain name.
DDNS Data
DDNS Service Select the desired DDNS Service provider.
User Name Enter your Username for the DDNS Service.
Pass-
word/Key
Enter your current password for the DDNS Service.
Domain Name Enter the domain name allocated to you by the DDNS
Service. If you have more than one name, enter the
name you wish to use.
DDNS Status
This message is returned by the DDNS Server
Normally, this message should be "Update success-
ful"
If the message is "No host", this indicates the host
name entered was not allocated to you. You need
to connect to DDNS Service provider and correct
this problem.
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60
Upgrade Firmware
The firmware (software) in the DC-202 can be upgraded using your Web
Browser.
You must first download the upgrade file, then select Upgrade on the Ad-
vanced menu. You will see a screen like the following.
To perform the Firmware Upgrade:
6. Click the "Browse" button and navigate to the location of the upgrade
file.
7. Select the upgrade file. Its name will appear in the Upgrade File field.
8. Click the "Start Upgrade" button to commence the firmware upgrade.
The DC-202 is unavailable during the up-
grade process, and must restart when the
upgrade is completed. Any connections to or
through the DC-202 will be lost.
DC-202 xDSL/Cable Broadband router
61
Config File
This feature allows you to download the current settings from the DC-202,
and save them to a file on your PC.
You can restore a previously-downloaded configuration file to the DC-202,
by uploading it to the DC-202.
This screen also allows you to set the DC-202 back to its factory default
configuration. Any existing settings will be deleted.
An example Config File screen is shown below.
Data - Config File Screen
Backup Con-
fig
Use this to download a copy of the current configuration, and store the
file on your PC. Click Download to start the download.
Restore
Config
This allows you to restore a previously-saved configuration file back to
the DC-202.
Click Browse to select the configuration file, then click Restore to
upload the configuration file.
WARNING !
Uploading a configuration file will destroy (overwrite) ALL of the
existing settings.
Default Con-
fig
Clicking the Restore Defaults button will reset the DC-202 to its factory
default settings.
WARNING !
This will delete ALL of the existing settings.
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62
PC Database
The PC Database is used whenever you need to select a PC (e.g. for the
"DMZ" PC). It eliminates the need to enter IP addresses. Also, you do not
need to use fixed IP addresses on your LAN.
PC Database Screen
An example PC Database screen is shown below.
PCs which are "DHCP Clients" are automatically added to the database,
and updated as required.
By default, non-Server versions of Windows act as "DHCP Clients"; this
setting is called "Obtain an IP Address automatically".
The DC-202 uses the "Hardware Address" to identify each PC, not the
name or IP address. The "Hardware Address" can only change if you
change the PC's network card or adapter.
This system means you do NOT need to use Fixed (static) IP addresses
on your LAN. However, you can add PCs using Fixed (static) IP Ad-
dresses to the PC database if required.
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63
Data - PC Database Screen
Known PCs
This lists all current entries. Data displayed is name (IP Address) type.
The "type" indicates whether the PC is connected to the LAN.
Name
If adding a new PC to the list, enter its name here. It is best if this
matches the PC's "hostname".
IP Address
Enter the IP Address of the PC. The PC will be sent a "ping" to deter-
mine its hardware address. If the PC is not available (not connected,
or not powered On) you will not be able to add it.
Buttons
Add
This will add the new PC to the list. The PC will be sent a "ping" to
determine its hardware address. If the PC is not available (not con-
nected, or not powered On) you will not be able to add it.
Delete
Delete the selected PC from the list. This should be done in 2 situa-
tions:
The PC has been removed from your LAN.
The entry is incorrect.
Refresh
Update the data on screen.
Generate
Report
Display a read-only list showing full details of all entries in the PC
database.
Advanced
Administra-
tion
View the Advanced version of the PC database screen - PC Database
(Admin). See below for details.
PC Database (Admin)
This screen is displayed if the "Advanced Administration" button on the PC
Database is clicked. It provides more control than the standard PC Data-
base screen.
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64
Data - PC Database ( Admin) Screen
Known PCs
This lists all current entries. Data displayed is name (IP Address) type.
The "type" indicates whether the PC is connected to the LAN.
PC Properties
Name
If adding a new PC to the list, enter its name here. It is best if this
matches the PC's "hostname".
IP Address
Select the appropriate option:
Automatic - The PC is set to be a DHCP client (Windows: "Obtain
an IP address automatically"). The DC-202 will allocate an IP ad-
dress to this PC when requested to do so. The IP address could
change, but normally won't.
DCHP Client - Reserved IP Address - Select this if the PC is set
to be a DCHP client, and you wish to guarantee that the DC-202
will always allocate the same IP Address to this PC.
Enter the required IP address. Only the last field is required; the
other fields must match the DC-202's IP address.
Fixed IP Address - Select this if the PC is using a Fixed (Static)
IP address. Enter the IP address allocated to the PC. (The PC must
be configured to use this IP address.)
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65
MAC Address
Select the appropriate option
Automatic discovery - Select this to have the DC-202 contact
the PC and find its MAC address. This is only possible if the PC is
connected to the LAN and powered On.
MAC is - Enter the MAC address on the PC. The MAC address is
also called the "Hardware Address", "Physical Address", or "Net-
work Adapter Address". The DC-202 uses this to provide a unique
identifier for each PC. Because of this, the MAC address can NOT
be left blank.
Buttons
Add as New
Entry
Add a new PC to the list, using the data in the "Properties" box.
If "Automatic discovery" (for MAC address) is selected, the PC will be
sent a "ping" to determine its hardware address. This will fail unless
the PC is connected to the LAN, and powered on.
Update Se-
lected PC
Update (modify) the selected PC, using the data in the "Properties"
box.
Clear Form
Clear the "Properties" box, ready for entering data for a new PC.
Refresh
Update the data on screen.
Generate
Report
Display a read-only list showing full details of all entries in the PC
database.
Standard
Screen
Click this to view the standard PC Database screen.
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66
Network Diagnostics
This screen allows you to perform a "Ping" or a DNS lookup. These activi-
ties can be useful in solving network problems. An example Network
Diagnostics screen is shown below.
Data - Network Diagnostics Screen
Ping
Ping this
IP Address
Enter the IP address you wish to ping. The IP address can be on your
LAN, or on the Internet. Note that if the address is on the Internet,
and no connection currently exists, you could get a "Timeout" error.
In that case, wait a few seconds and try again.
Ping Button
After entering the IP address, click this button to start the "Ping"
procedure. The results will be displayed in the Ping Results pane.
DNS Lookup
Domain
name/URL
Enter the Domain name or URL for which you want a DNS (Domain
Name Server) lookup. Note that if the address in on the Internet,
and no connection currently exists, you could get a "Timeout" error.
In that case, wait a few seconds and try again.
Lookup But-
ton
After entering the Domain name/URL, click this button to start the
"DNS Lookup" procedure.
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67
Options
This screen allows advanced users to enter or change a number of settings.
For normal operation, there is no need to use this screen or change any
settings.
An example Options screen is shown below.
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68
Data - Options Screen
Backup DNS
IP Address
Enter the IP Address of the DNS (Domain Name Servers) here. These
DNS will be used only if the primary DNS is unavailable.
TFTP
Enable Firm-
ware
Upgrade
using TFTP
If enabled, TFTP (Trivial FTP) can be used to upgrade the firmware
in this device. This is normally not required; a Windows utility is
available for this purpose.
You must obtain the firmware upgrade file first; instructions for
using TFTP will be available with the upgrade.
UpnP
Enable UPnP
Services
UPnP (Universal Plug and Play) allows automatic discovery and
configuration of equipment attached to your LAN. UPnP is by sup-
ported by Windows ME, XP, or later.
If Enabled, this device will be visible via UPnP.
If Disabled, this device will not be visible via UPnP.
Allow Con-
figuration...
If checked, then UPnP users can change the configuration.
If Disabled, UPnP users can only view the configuration. But
currently, this restriction only applies to users running Windows
XP, who access the Properties via UPnP. (e.g. Right - click the DC-
202 in My Network Places, and select Properties)
Allow Inter-
net access to
be disabled
If checked, then UPnP users can disable Internet access via this
device.
If Disabled, UPnP users can NOT disable Internet access via this
device. But currently, this restriction only applies to users running
Windows XP, who access the Properties via UPnP. (e.g. Right -
click the DC-202 in My Network Places, and select Properties)
MTU
MTU size
MTU (Maximum Transmission Unit) value should only be changed if
advised to do so by Technical Support.
Enter a value between 1 and 1500.
This device will still auto-negotiate with the remote server, to set
the MTU size. The smaller of the 2 values (auto-negotiated, or en-
tered here) will be used.
For direct connections (not PPPoE or PPTP), the MTU used is
always 1500.
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69
Security
This screen allows you to set Firewall and other security-related options.
Data - Security Screen
Firewall
Enable DoS
Firewall
If enabled, DoS (Denial of Service) attacks will be detected and
blocked. The default is enabled. It is strongly recommended that this
setting be left enabled.
Note:
A DoS attack does not attempt to steal data or damage your PCs,
but overloads your Internet connection so you can not use it - the
service is unavailable.
This device uses "Stateful Inspection" technology. This system can
detect situations where individual TCP/IP packets are valid, but
collectively they become a DoS attack.
Threshold
This setting affects the number of "half-open" connections allowed.
A "half-open" connection arises when a remote client contacts the
Server with a connection request, but then does not reply to the
Server's response.
While the optimum number of "half-open" connections allowed
(the "Threshold") depends on many factors, the most important
factor is the available bandwidth of your Internet connection.
Select the setting to match the bandwidth of your Internet con-
nection.
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70
Options
Respond to
ICMP
The ICMP protocol is used by the "ping" and "traceroute" programs,
and by network monitoring and diagnostic programs.
If checked, the DC-202 will repond to ICMP packets received from
the Internet.
If not checked, ICMP packets from the Internet will be ignored.
Disabling this option provides a slight increase in security.
Allow IPsec
The IPSec protocol is used to establish a secure connection, and is
widely used by VPN (Virtual Private Networking) programs.
If checked, IPSec connections are allowed.
If not checked, IPSec connections are blocked.
Allow PPTP
PPTP (Point to Point Tunneling Protocol) is widely used by VPN (Virtual
Private Networking) programs.
If checked, PPTP connections are allowed.
If not checked, PPTP connections are blocked.
Allow L2TP
L2TP is a protocol developed by Cisco for VPNs (Virtual Private Net-
works).
If checked, L2TP connections are allowed.
If not checked, L2TP connections are blocked.
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71
Logs
The Logs record various types of activity on the DC-202. This data is useful
for troubleshooting, but enabling all logs will generate a large amount of
data and adversely affect performance.
Since only a limited amount of log data can be stored in the DC-202, log
data can also be E-mailed to your PC.
Data - Logs Screen
Enable Logs
Outgoing Con-
nections
If selected, Outgoing Internet connections are logged. Normally,
the (Internet) "Destination" will be shown as an IP address. But if
the "URL Filter" is enabled, the "Destination" will be shown as a
URL.
Access Control
If enabled, the log will include attempted outgoing connections
which have been blocked by the "Access Control" feature.
DoS Attacks
If enabled, this log will show details of DoS (Denial of Service)
attacks which have been blocked by the built-in Firewall.
Timezone
Select the correct Timezone for your location. This is required for
the date/time shown on the logs to be correct.
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72
E-Mail Reports
Send E-mail
alert
If enabled, an E-mail will be sent immediately if a DoS (Denial of
Service) attack is detected. If enabled, the E-mail address infor-
mation must be provided.
E-mail Logs
You can choose to have the logs E-mailed to you, by enabling
either or both checkboxes. If enabled, the Log will be sent to the
specified E-mail address. The interval between E-mails is deter-
mined by the "Send" setting.
Send
Select the desired option for sending the log by E-mail.
When log is full - The time is not fixed. The log will be sent
when the log is full, which will depend on the volume of traf-
fic.
Every day, Every Monday ... - The log is sent on the
interval specified.
If "Every day" is selected, the log is sent at the time speci-
fied.
If the day is specified, the log is sent once per week, on the
specified day.
Select the time of day you wish the E-mail to be sent.
If the log is full before the time specified to send it, it will be
sent regardless.
E-Mail Address
E-mail Address
Enter the E-mail address the Log is to be sent to. The E-mail will
also show this address as the Sender's address.
Subject
Enter the text string to be shown in the "Subject" field for the E-
mail.
SMTP Server
Enter the address or IP address of the SMTP (Simple Mail Trans-
port Protocol) Server you use for outgoing E-mail.
Port No.
Enter the port number used to connect to the SMTP Server. The
default value is 25.
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73
MAC Address
The MAC (hardware) address is a low-level network identifier. It may be
called "MAC Address", "Hardware Address", or "Physical Address". On a PC,
this address is associated with the Network card or adapter. The address
on the MAC Address screen is the address on the Internet (WAN port)
interface, and has no effect on the LAN interface.
If your ISP asks for the Network Adapter Address, Physical Address,
Hardware Address, or MAC Address for the PC the DSL/Cable modem is
connected to, provide this value.
If your ISP has already recorded a MAC Address, you can change the
address used by the DC-202 to match the address recorded by your
ISP.
MAC Address Screen
Select MAC Address from the Advanced menu to reach a screen like the
example below.
Data - MAC Address Screen
MACAddress
The current MAC (hardware) address is displayed.
If your ISP has recorded a Hardware Address, you can "spoof" that
address by entering it in the address field. The hardware address
consists of 12 characters, where each character is a digit (0..9) or a
character between A and F.
Buttons
Default
Inserts the default MAC address into the MAC address field. You
must click "Save" to actually change the address used.
Copy from PC
Inserts the MAC address from your PC into the MAC address field.
You must click "Save" to actually change the address used.
Save
Save your changes to the DC-202.
Cancel
Reverse any changes made since the last "Save".
DC-202 xDSL/Cable Broadband router
74
If the MAC address is changed, the DC-
202 must restart.
Routing
Overview
If you don't have other Routers or Gateways on your LAN, you can
ignore the "Routing" page completely.
If the DC-202 is only acting as a Gateway for the local LAN segment,
ignore the "Routing" page even if your LAN has other Routers.
If your LAN has a standard Router (e.g. Cisco) on your LAN, and the
DC-202 is to act as a Gateway for all LAN segments, enable RIP (Rout-
ing Information Protocol) and ignore the Static Routing table.
If your LAN has other Gateways and Routers, and you wish to control
which LAN segments use each Gateway, do NOT enable RIP (Routing
Information Protocol). Configure the Static Routing table instead. (You
also need to configure the other Routers.)
If using Windows 2000 Data center Server as a software Router, enable
RIP on the DC-202, and ensure the following Windows 2000 settings
are correct:
Open Routing and Remote Access
In the console tree, select Routing and Remote Access , [server name],
IP Routing, RIP
In the "Details" pane, right-click the interface you want to configure for
RIP version 2, and then click "Properties".
On the "General" tab, set Outgoing packet protocol to "RIP version 2
broadcast", and Incoming packet protocol to "RIP version 1 and 2".
Routing Screen
The routing table is accessed by the Routing link on the Administration
menu.
Using this Screen
Generally, you will use either RIP (Routing Information Protocol) OR the
Static Routing Table, as explained above, although is it possible to use
both methods simultaneously.
Static Routing Table
If RIP is not used, an entry in the routing table is required for each LAN
segment on your Network, other than the segment to which this device
is attached.
The other Routers must also be configured. See Configuring Other
Routers on your LAN later in this chapter for further details and an ex-
ample.
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75
Data - Routing Screen
RIP
Enable RIP
Check this to enable the RIP (Routing Information Protocol) feature
of the DC-202.
The DC-202 supports RIP 1 only.
Static Routing
Static Routing
Table Entries
This list shows all entries in the Routing Table.
The "Properties" area shows details of the selected item in the
list.
Change any the properties as required, then click the "Update"
button to save the changes to the selected entry.
Properties
Destination Network - The network address of the remote
LAN segment. For standard class "C" LANs, the network address
is the first 3 fields of the Destination IP Address. The 4th (last)
field can be left at 0.
Network Mask - The Network Mask for the remote LAN seg-
ment. For class "C" networks, the default mask is 255.255.255.0
Gateway IP Address - The IP Address of the Gateway or
Router which the DC-202 must use to communicate with the
destination above. (NOT the router attached to the remote seg-
ment.)
Metric - The number of "hops" (routers) to pass through to
reach the remote LAN segment. The shortest path will be used.
The default value is 1.
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76
Buttons
Save
Save the RIP setting. This has no effect on the Static Routing Table.
Add
Add a new entry to the Static Routing table, using the data shown in
the "Properties" area on screen. The entry selected in the list is
ignored, and has no effect.
Update
Update the current Static Routing Table entry, using the data shown
in the "Properties" area on screen.
Delete
Delete the current Static Routing Table entry.
Clear Form
Clear all data from the "Properties" area, ready for input of a new
entry for the Static Routing table.
Generate
Report
Generate a read-only list of all entries in the Static Routing table.
Configuring Other Routers on your LAN
It is essential that all IP packets for devices not on the local LAN be passed
to the DC-202, so that they can be forwarded to the external LAN, WAN, or
Internet. To achieve this, the local LAN must be configured to use the DC-
202 as the Default Route or Default Gateway.
Local Router
The local router is the Router installed on the same LAN segment as the
DC-202. This router requires that the Default Route is the DC-202 itself.
Typically, routers have a special entry for the Default Route. It should be
configured as follows.
Destination IP Ad-
dress
Normally 0.0.0.0, but check your router docu-
mentation.
Network Mask Normally 0.0.0.0, but check your router docu-
mentation.
Gateway IP Address The IP Address of the DC-202.
Metric 1
Other Routers on the Local LAN
Other routers on the local LAN must use the DC-202's Local Router as the
Default Route. The entries will be the same as the DC-202's local router,
with the exception of the Gateway IP Address.
For a router with a direct connection to the DC-202's local Router, the
Gateway IP Address is the address of the DC-202's local router.
For routers which must forward packets to another router before reach-
ing the DC-202's local router, the Gateway IP Address is the address of
the intermediate router.
DC-202 xDSL/Cable Broadband router
77
Static Routing - Example
For the DC-202's Routing Table
For the LAN shown above, with 2 routers and 3 LAN segments, the DC-202
requires 2 entries as follows.
Entry 1 (Segment 1)
Destination IP Ad-
dress
192.168.1.0
Network Mask 255.255.255.0 (Standard Class C)
Gateway IP Address 192.168.0.100 (DC-202's local
Router)
Metric 2
Entry 2 (Segment 2)
Destination IP Ad-
dress
192.168.2.0
Network Mask 255.255.255.0 (Standard Class C)
Gateway IP Address 192.168.0.100
Metric 3
For Router A's Default Route
Destination IP Ad-
dress
0.0.0.0
Network Mask 0.0.0.0
Gateway IP Address 192.168.0.1 (DC-202's IP Address)
For Router B's Default Route
Destination IP Ad-
dress
0.0.0.0
Network Mask 0.0.0.0
Gateway IP Address 192.168.1.80 (DC-202's local router)
DC-202 xDSL/Cable Broadband router
Appendix A
Troubleshooting
Overview
This chapter covers some common problems that may be encountered
while using the DC-202 and some possible solutions to them. If you follow
the suggested steps and the DC-202 still does not function properly, con-
tact your dealer for further advice.
General Problems
Problem
1:
Can't connect to the DC-202 to configure it.
Solution
1:
Check the following:
The DC-202 is properly installed, LAN connections are
OK, and it is powered ON.
Ensure that your PC and the DC-202 are on the same
network segment. (If you don't have a router, this must
be the case.)
If your PC is set to "Obtain an IP Address automatically"
(DHCP client), restart it.
If your PC uses a Fixed (Static) IP address, ensure that it
is using an IP Address within the range 192.168.0.2 to
192.168.0.254 and thus compatible with the DC-202's
default IP Address of 192.168.0.1.
Also, the Network Mask should be set to 255.255.255.0
to match the DC-202.
In Windows, you can check these settings by using Con-
trol Panel-Network to check the Properties for the TCP/IP
protocol.
Appendix A - Troubleshooting
79
Internet Access
Problem
1:
When I enter a URL or IP address I get a time out
error.
Solution
1:
A number of things could be causing this. Try the following
troubleshooting steps.
Check if other PCs work. If they do, ensure that your PCs
IP settings are correct. If using a Fixed (Static) IP Ad-
dress, check the Network Mask, Default gateway and
DNS as well as the IP Address.
If the PCs are configured correctly, but still not working,
check the DC-202. Ensure that it is connected and ON.
Connect to it and check its settings. (If you can't connect
to it, check the LAN and power connections.)
If the DC-202 is configured correctly, check your Inter-
net connection (DSL/Cable modem etc) to see that it is
working correctly.
Problem
2:
Some applications do not run properly when using the
DC-202.
Solution
2:
The DC-202 processes the data passing through it, so it is
not transparent.
Use the Special Applications feature to allow the use of
Internet applications which do not function correctly.
If this does solve the problem you can use the DMZ func-
tion. This should work with almost every application, but:
It is a security risk, since the firewall is disabled.
Only one (1) PC can use this feature.
DC-202 xDSL/Cable Broadband router
Appendix B
Specifications
Multi-Function DC-202 Broadband Router
Model DC-202
Dimensions 140mm(W) * 99mm(D) * 27mm(H)
Operating Tem-
perature
0° C to 40° C
Storage Tempera-
ture
-10° C to 70° C
Network Protocol: TCP/IP
Network Interface: 5 Ethernet:
4 * 10/100BaseT (RJ45) LAN connection
1 * 10/100BaseT (RJ45) for WAN
LEDs 11
Power Adapter 9 V DC External
FCC Statement
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
in a residential installation.
This equipment generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one of the following meas-
ures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
To assure continued compliance, any changes or modifications not ex-
pressly approved by the party responsible for compliance could void the
Appendix B - Specifications
81
user's authority to operate this equipment. (Example - use only shielded
interface cables when connecting to computer or peripheral devices).
FCC Radiation Exposure Statement
This equipment complies with FCC RF radiation exposure limits set forth for
an uncontrolled environment. This equipment should be installed and oper-
ated with a minimum distance of 20 centimeters between the radiator and
your body.
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interfer-
ence that may cause undesired operation.
This transmitter must not be co-located or operating in conjunction with
any other antenna or transmitter.
CE Marking Warning
This is a Class B product. In a domestic environment this product may
cause radio interference in which case the user may be required to take
adequate measures.
75

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