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User Guide
RT-N18U
RT-N18U 2.4GHz 600Mbps High Power Router
2
Copyright © 2014 ASUSTeK Computer Inc. All Rights Reserved.
No part of this manual, including the products and software described
in it, may be reproduced, transmitted, transcribed, stored in a retrieval
system, or translated into any language in any form or by any means, except
documentation kept by the purchaser for backup purposes, without the
express written permission of ASUSTeK Computer Inc. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired,
modified or altered, unless such repair, modification of alteration is authorized
in writing by ASUS; or (2) the serial number of the product is defaced or
missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS,
EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS
AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR
PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE
FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE
AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A
COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY
FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL,
INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be
registered trademarks or copyrights of their respective companies, and are used
only for identification or explanation and to the owners’ benefit, without intent
to infringe.
E9415
First Edition
May 2014
3
Table of contents
1 Getting to know your wireless router 6
1.1 Welcome! ........................................................................................6
1.2 Package contents .........................................................................6
1.3 Your wireless router .....................................................................7
1.4 Positioning your router ..............................................................9
1.5 Setup Requirements ................................................................ 10
1.6 Router Setup ............................................................................... 11
1.6.1 Wired connection ..................................................................11
1.6.2 Wireless connection ............................................................. 12
2 Getting started 14
2.1 Logging into the Web GUI ..................................................... 14
2.2 Quick Internet Setup (QIS) with Auto-detection ........... 15
2.3 Connecting to your wireless network ................................ 19
3 Configuring the General settings 20
3.1 Using the Network Map ......................................................... 20
3.1.1 Setting up the wireless security settings ......................21
3.1.2 Managing your network clients ....................................... 22
3.1.3 Monitoring your USB device .............................................23
3.2 Creating a Guest Network ...................................................... 26
3.3 Using the Traffic Manager ...................................................... 28
3.3.1 Managing QoS (Quality of Service) Bandwidth..........28
3.3.2 Monitoring Traffic .................................................................31
3.4 Setting up Parental Control ................................................... 32
3.5 Using the USB Application ..................................................... 33
3.5.1 Using AiDisk ............................................................................... 33
3.5.2 Using Servers Center ............................................................35
3.5.3 3G/4G ........................................................................................41
4
Table of contents
3.6 Using AiCloud ............................................................................. 43
3.6.1 Cloud Disk ................................................................................44
3.6.2 Smart Access ........................................................................... 46
3.6.3 Smart Sync ............................................................................... 47
4 Configuring the Advanced Settings 48
4.1 Wireless ......................................................................................... 48
4.1.1 General ......................................................................................48
4.1.2 WPS ............................................................................................51
4.1.3 Bridge ........................................................................................53
4.1.4 Wireless MAC Filter ...............................................................55
4.1.5 RADIUS Setting ......................................................................56
4.1.6 Professional .............................................................................57
4.2 LAN ................................................................................................. 59
4.2.1 LAN IP ........................................................................................59
4.2.2 DHCP Server ............................................................................60
4.2.3 Route .........................................................................................62
4.2.4 IPTV ............................................................................................... 63
4.3 WAN ............................................................................................... 64
4.3.1 Internet Connection .............................................................64
4.3.2 Port Trigger ..............................................................................67
4.3.3 Virtual Server/Port Forwarding ........................................69
4.3.4 DMZ............................................................................................72
4.3.5 DDNS .........................................................................................73
4.3.6 NAT Passthrough ................................................................... 74
4.4 IPv6 ................................................................................................. 75
4.5 VPN Server ................................................................................... 76
4.6 Firewall .......................................................................................... 77
4.6.1 General ......................................................................................77
4.6.2 URL Filter ..................................................................................77
4.6.3 Keyword filter .........................................................................78
5
Table of contents
4.6.4 Network Services Filter .......................................................79
4.7 Administration ........................................................................... 81
4.7.1 Operation Mode ....................................................................81
4.7.2 System ....................................................................................... 82
4.7.3 Firmware Upgrade ................................................................ 83
4.7.4 Restore/Save/Upload Setting ...........................................83
4.8 System Log .................................................................................. 84
5 Utilities 85
5.1 Device Discovery ....................................................................... 85
5.2 Firmware Restoration .............................................................. 86
5.3 Setting up your printer server .............................................. 87
5.3.1 ASUS EZ Printer Sharing .....................................................87
5.3.2 Using LPR to Share Printer .................................................91
5.4 Download Master ...................................................................... 96
5.4.1 Configuring Bit Torrent download settings .................97
5.4.2 NZB settings ............................................................................ 98
6 Troubleshooting 99
6.1 Basic Troubleshooting ............................................................. 99
6.2 Frequently Asked Questions (FAQs) ................................102
Appendices 112
Notices .....................................................................................................112
ASUS Contact information ..................................................................126
Networks Global Hotline Information.............................................127
6
1 Getting to know your wireless
router
NOTES:
• Ifanyoftheitemsaredamagedormissing,contactASUSfor
technical inquiries and support, Refer to the ASUS Support Hotline
list at the back of this user manual.
• Keeptheoriginalpackagingmaterialincaseyouwouldneedfuture
warranty services such as repair or replacement.
RT-N18U Wireless Router Network cable (RJ-45)
Power adapter Quick Start Guide
Warranty Card
1.1 Welcome!
Thank you for purchasing an ASUS RT-N18U wireless router!
It is a high-powered 2.4GHz 802.11n Wi-Fi router that uses
TurboQAM™ technology with speed up to 600Mbit/s. It has a USB
3.0 port and Gigabit Ethernet connectivity, making it a perfect
choice for discerning users’ performance.
1.2 Package contents
7
1.3 Your wireless router
RT-N18U Wireless 2.4GHz
600Mbps High Power Router
LAN 1~4 LED
Off: No power or no physical connection.
On: Has physical connection to a local area network (LAN).
WAN (Internet) LED
Off: No power or no physical connection.
On: Has physical connection to a wide area network (WAN).
USB 3.0 / 2.0 LED
Off: No power or no physical connection.
On: Has physical connection to USB 3.0 / 2.0 devices.
2.4GHz LED
Off: No 2.4GHz signal.
On: Wireless system is ready.
Flashing: Transmitting or receiving data via wireless connection.
Power LED
Off: No power.
On: Device is ready.
Flashing slow: Rescue mode
Flashing quick: WPS is processing.
Power (DC-IN) port
Insert the bundled AC adapter into this port and connect your router to a power source.
8
NOTES:
• Useonlytheadapterthatcamewithyourpackage.Usingother
adapters may damage the device.
• Specifications:
DC Power adapter DC Output: +12V with max 1.5A current;
Operating
Temperature
0~40
o
C Storage 0~70
o
C
Operating Humidity 50~90% Storage 20~90%
Power button
Press this button to power on or off the system.
USB 3.0 / 2.0 ports
Insert USB 3.0 / 2.0 devices such as USB hard disks or USB flash drives into these ports.
Insert your iPad’s USB cable into one of these ports to charge your iPad.
Reset button
This button resets or restores the system to its factory default settings.
WAN (Internet) port
Connect a network cable into this port to establish WAN connection.
LAN 1 ~ 4 ports
Connect network cables into these ports to establish LAN connection.
WPS button
This button launches the WPS Wizard.
On
Off
9
1.4 Positioning your router
For the best wireless signal transmission between the wireless
router and the network devices connected to it, ensure that you:
• Placethewirelessrouterinacentralizedareaforamaximum
wireless coverage for the network devices.
• Keepthedeviceawayfrommetalobstructionsandawayfrom
direct sunlight.
• Keepthedeviceawayfrom802.11gor20MHzonlyWi-Fi
devices, 2.4GHz computer peripherals, Bluetooth devices,
cordlessphones,transformers,heavy-dutymotors,fluorescent
lights, microwave ovens, refrigerators, and other industrial
equipment to prevent signal interference or loss.
• Alwaysupdatetothelatestfirmware.VisittheASUSwebsiteat
http://www.asus.com to get the latest firmware updates.
• Toensurethebestwirelesssignal,orientthethreedetachable
antennas as shown in the drawing below.
45
°
45
°
WPS
10
1.5 Setup Requirements
To set up your wireless network, you need a computer that meets
the following system requirements:
• EthernetRJ-45(LAN)port(10Base-T/100Base-TX/
1000BaseTX)
• IEEE802.11a/b/g/n/acwirelesscapability
• AninstalledTCP/IPservice
• WebbrowsersuchasInternetExplorer,Firefox,Safari,or
Google Chrome
NOTES:
• Ifyourcomputerdoesnothavebuilt-inwirelesscapabilities,youmay
install an IEEE 802.11a/b/g/n/ac WLAN adapter to your computer to
connect to the network.
• TheEthernetRJ-45cablesthatwillbeusedtoconnectthenetwork
devices should not exceed 100 meters.
11
1.6 Router Setup
IMPORTANT!
• Useawiredconnectionwhensettingupyourwirelessrouterto
avoid possible setup problems.
• BeforesettingupyourASUSwirelessrouter,dothefollowing:
• Ifyouarereplacinganexistingrouter,disconnectitfromyour
network.
• Disconnectthecables/wiresfromyourexistingmodemsetup.If
your modem has a backup battery, remove it as well.
• Rebootyourcablemodemandcomputer(recommended).
1.6.1 Wired connection
NOTE: You can use either a straight-through cable or a crossover cable
for wired connection.
To set up your wireless router via wired connection:
1. Insert your wireless router’s AC adapter to the DC-IN port and
plug it to a power outlet.
Computer
Wall Power Outlet
LAN
Modem
Power
WAN
RT-N18U
12
2. Using the bundled network cable, connect your computer to
your wireless router’s LAN port.
IMPORTANT! Ensure that the LAN LED is blinking.
3 Using another network cable, connect your modem to your
wireless router’s WAN port.
4. Insert your modem’s AC adapter to the DC-IN port and plug it
to a power outlet.
1.6.2 Wireless connection
To set up your wireless router via wireless connection:
1. Insert your wireless router’s AC adapter to the DC-IN port and
plug it to a power outlet.
2 Using the bundled network cable, connect your modem to
your wireless router’s WAN port.
Wall Power Outlet
Modem
Power
WAN
RT-N18U
13
3. Insert your modem’s AC adapter to the DC-IN port and plug it
to a power outlet.
4. Install an IEEE 802.11a/b/g/n WLAN adapter on your computer.
NOTES:
• Fordetailsonconnectingtoawirelessnetwork,refertotheWLAN
adapter’s user manual.
• Tosetupthesecuritysettingsforyournetwork,refertothesection
Setting up the wireless security settings in Chapter 3 of this user
manual.
14
2 Getting started
2.1 Logging into the Web GUI
Your ASUS Wireless Router comes with an intuitive web graphical
user interface (GUI) that allows you to easily configure its various
features through a web browser such as Internet Explorer, Firefox,
Safari, or Google Chrome.
NOTE: The features may vary with different firmware versions.
To log into the web GUI:
1. On your web browser, manually key in the wireless router’s
default IP address: 192.168.1.1 or enter http://router.asus.com.
2. On the login page, key in the default user name (admin) and
password (admin).
3. You can now use the Web GUI to configure various settings of
your ASUS Wireless Router.
NOTE: If you are logging into the Web GUI for the first time, you will be
directed to the Quick Internet Setup (QIS) page automatically.
Navigation
panel
QIS
Top command buttons
Information
banner
middle
column
right column
15
2.2 Quick Internet Setup (QIS) with Auto-
detection
The Quick Internet Setup (QIS) function guides you in quickly
setting up your Internet connection.
NOTE: When setting the Internet connection for the first time, press
the Reset button on your wireless router to reset it to its factory default
settings.
To use QIS with auto-detection:
1. Log into the Web GUI. The QIS page launches automatically.
NOTES:
• Bydefault,theloginusernameandpasswordforyourwireless
router's Web GUI is admin. For details on changing your wireless
router's login username and password, refer to section 4.7.2 System.
• Thewirelessrouter'sloginusernameandpasswordallowsyouto
log into your wireless router's Web GUI to configure your wireless
router's settings. The 2.4GHz network name (SSID) and security key
allows Wi-Fi devices to log in and connect to your 2.4GHz network.
16
2. The wireless router automatically detects if your ISP connection
type is Dynamic IP, PPPoE, PPTP, L2TP, and Static IP. Key in
the necessary information for your ISP connection type.
IMPORTANT! Obtain the necessary information from your ISP about
the Internet connection type.
for Automatic IP (DHCP)
for PPPoE, PPTP, and L2TP
17
for Static IP
NOTES:
• Theauto-detectionofyourISPconnectiontypetakesplacewhen
you configure the wireless router for the first time or when your
wireless router is reset to its default settings.
• IfQISfailedtodetectyourInternetconnectiontype,clickSkip to
manual setting and manually configure your connection settings.
3. Assign the wireless network name (SSID) and security key for
your 2.4GHz wireless connection. Click Apply when done.
18
4. Your Internet and wireless settings are displayed. Click Next to
continue.
5. Read the wireless network connection tutorial. When done,
click Finish.
19
2.3 Connecting to your wireless network
After setting up your wireless router via QIS, you can connect your
computer or other smart devices to your wireless network.
To connect to your network:
1. On your computer, click the network icon in the notification
area to display the available wireless networks.
2. Select the wireless network that you want to connect to, then
click Connect.
3. You may need to key in the network security key for a secured
wireless network, then click OK.
4. Wait while your computer establishes connection to the
wireless network successfully. The connection status is
displayed and the network icon displays the connected
status.
NOTES:
• Refertothenextchaptersformoredetailsonconfiguringyour
wireless network's settings.
• Refertoyourdevice'susermanualformoredetailsonconnectingit
to your wireless network.
20
3 Configuring the General
settings
3.1 Using the Network Map
Network Map allows you to configure your network’s security
settings, manage your network clients, and monitor your USB
device.
21
3.1.1 Setting up the wireless security settings
To protect your wireless network from unauthorized access, you
need to configure its security settings.
To set up the wireless security settings:
1. From the navigation panel, go to General > Network Map.
2. OntheNetworkMapscreenandunderSystem status, you can
configure the wireless security settings such as SSID, security
level, and encryption settings.
2.4GHz security settings
3. On the Wireless name (SSID) field, key in a unique name for
your wireless network.
22
4. FromtheSecurity Level dropdown list, select the encryption
method for your wireless network.
IMPORTANT! The IEEE 802.11n/ac standard prohibits using High
Throughput with WEP or WPA-TKIP as the unicast cipher. If you use these
encryption methods, your data rate will drop to IEEE 802.11g 54Mbps
connection.
5. Keyinyoursecuritypasskey.
6. Click Apply when done.
3.1.2 Managing your network clients
To manage your network clients:
1. From the navigation panel, go to General > Network Map tab.
2. OntheNetworkMapscreen,selecttheClient Status icon to
display your network client’s information.
3. To block a client’s access to your network, select the client and
click block.
23
3.1.3 Monitoring your USB device
The ASUS Wireless Router provides two USB ports for connecting
USB devices or USB printer to allow you to share files and printer
with clients in your network.
NOTES:
• Tousethisfeature,youneedtoplugaUSBstoragedevice,suchasa
USB hard disk or USB flash drive, to the USB 3.0/2.0 ports on the rear
panel of your wireless router. Ensure that the USB storage device is
formatted and partitioned properly. Refer to the Plug-n-Share Disk
Support List at http://event.asus.com/networks/disksupport
• TheUSBportssupporttwoUSBdrivesoroneprinterandoneUSB
drive at the same time.
24
IMPORTANT! You first need to create a share account and its
permission /access rights to allow other network clients to access the
USB device via an FTP site/third-party FTP client utility, Servers Center,
Samba, or AiCloud. For more details, refer to the section 3.5.Using the
USB Application and 3.6 Using AiCloud in this user manual.
To monitor your USB device:
1. From the navigation panel, go to General > Network Map.
2. OntheNetworkMapscreen,selecttheUSB Disk Status icon to
display your USB device’s information.
3. On the AiDisk Wizard field, click GOtosetupanFTPserverfor
Internet file sharing.
NOTES:
• Formoredetails,refertothesection3.5.2 Using Servers Center in
this user manual.
• ThewirelessrouterworkswithmostUSBHDDs/Flashdisks(upto2TB
size) and supports read-write access for FAT16, FAT32, EXT2, EXT3,
and NTFS.
25
Safely removing the USB disk
IMPORTANT: Incorrect removal of the USB disk may cause data
corruption.
To safely remove the USB disk:
1. From the navigation panel, go to General > Network Map.
2. In the upper right corner, click > Eject USB disk. When
the USB disk is ejected successfully, the USB status shows
Unmounted.
26
3.2 Creating a Guest Network
The Guest Network provides temporary visitors with Internet
connectivity via access to separate SSIDs or networks without
providing access to your private network.
NOTE: RT-N18U supports up to four SSIDs.
To create a guest network:
1. From the navigation panel, go to General > Guest Network.
2. On the Guest Network screen, select 2.4Ghz frequency band for
the guest network that you want to create.
3. Click Enable.
27
4. To configure additional options, click Modify.
5. Click Yes on the Enable Guest Network screen.
6. Assign a wireless name for your temporary network on the
Network Name (SSID) field.
7. Select an Authentication Method.
8. Select an Encryption method.
9. Specify the Access time or choose Limitless.
10. Select Disable or Enable on the Access Intranet item.
11. When done, click Apply.
28
3.3 Using the Traffic Manager
3.3.1 Managing QoS (Quality of Service) Bandwidth
Quality of Service (QoS) allows you to set the bandwidth priority
and manage network traffic.
To set up bandwidth priority:
1. From the navigation panel, go to General > Traffic Manager >
QoS tab.
2. Click ON to enable QoS. Fill in the upload and download
bandwidth fields.
NOTE: Get the bandwidth information from your ISP.
3. Click Save.
NOTE: The User Specify Rule List is for advanced settings. If you want
to prioritize specific network applications and network services, select
User-defined QoS rules or User-defined Priority from the drop-down
list on the upper-right corner.
29
4. On the user-defined QoS rules page, there are four default
online service types – web surf, HTTPS and file transfers.
Select your preferred service, fill in the Source IP or MAC,
Destination Port, Protocol, Transferred and Priority, then
click Apply. The information will be configured in the QoS rules
screen.
NOTES
• TofillinthesourceIPorMAC,youcan:
a) Enter a specific IP address, such as "192.168.122.1".
b) Enter IP addresses within one subnet or within the same IP
pool, such as “192.168.123.*”, or “192.168.*.*”
c) Enter all IP addresses as “*.*.*.*” or leave the field blank.
d) The format for the MAC address is six groups of two
hexadecimal digits, separated by colons (:), in transmission
order (e.g. 12:34:56:aa:bc:ef)
• Forsourceordestinationportrange,youcaneither:
a) Enter a specific port, such as “95”.
b) Enter ports within a range, such as “103:315”, “>100”, or
“<65535”.
• TheTransferred column contains information about the upstream
and downstream traffic (outgoing and incoming network traffic) for
one section. In this column, you can set the network traffic limit (in
KB) for a specific service to generate specific priorities for the service
assigned to a specific port. For example, if two network clients, PC
1 and PC 2, are both accessing the Internet (set at port 80), but PC 1
exceeds the network traffic limit due to some downloading tasks, PC
1 will have a lower priority. If you do not want to set the traffic limit,
leave it blank.
30
5. On the User-defined Priority page, you can prioritize the
network applications or devices into five levels from the user-
defined QoS rules’ dropdown list. Based on priority level, you
can use the following methods to send data packets:
• Changetheorderofupstreamnetworkpacketsthataresent
to the Internet.
• UnderUpload Bandwidth table, set Minimum Reserved
Bandwidth and Maximum Bandwidth Limit for multiple
network applications with different priority levels. The
percentages indicate the upload bandwidth rates that are
available for specified network applications.
NOTES:
• Low-prioritypacketsaredisregardedtoensurethetransmissionof
high-priority packets.
• UnderDownload Bandwidth table, set Maximum Bandwidth
Limit for multiple network applications in corresponding order.
The higher priority upstream packet will cause the higher priority
downstream packet.
• Iftherearenopacketsbeingsentfromhigh-priorityapplications,the
full transmission rate of the Internet connection is available for low-
priority packets.
6. Set the highest priority packet. To ensure a smooth online
gaming experience, you can set ACK, SYN, and ICMP as the
highest priority packet.
NOTE: Ensure to enable QoS first and set up the upload and download
rate limits.
31
3.3.2 Monitoring Traffic
The traffic monitor function allows you to access the bandwidth
usage and speed of your Internet, wired, and wireless networks. It
allows you to monitor network traffic even on a daily basis.
NOTE: Packets from the Internet are evenly transmitted to the wired
and wireless devices.
32
3.4 Setting up Parental Control
Parental Control allows you to control the Internet access time.
Users can set the time limit for a client’s network usage.
To use the parental control function:
1. From the navigation panel, go to General > Parental control.
2. Click ON to enable Parental Control.
3. Select the client whose network usage you want to control.
You may also key in the client’s MAC address in the Client MAC
Address column.
NOTE: Ensure that the client name does not contain special characters
or spaces as this may cause the router to function abnormally.
4. Click or to add or delete the client’s profile.
5. Set up the allowed time limit in Time Management map. Drag
and drop a desired time zone to allow client’s network usage.
6. Click OK.
7. Click Apply to save the settings.
33
3.5 Using the USB Application
The USB Applications function provides AiDisk, Servers Center,
Network Printer Server and Download Master submenus.
IMPORTANT! To use the server functions, you need to insert a USB
storage device, such as a USB hard disk or USB flash drive, in the USB
2.0 port on the rear panel of your wireless router. Ensure that the USB
storage device is formatted and partitioned properly. Refer to the ASUS
website at http://event.asus.com/2009/networks/disksupport/ for the
file system support table.
3.5.1 Using AiDisk
AiDisk allows you to share files stored on a connected USB device
through the Internet. AiDisk also assists you with setting up ASUS
DDNS and an FTP server.
To use AiDisk:
1. From the navigation panel, go to General > USB application,
then click the AiDisk icon.
2. From the Welcome to AiDisk wizard screen, click Go.
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4. Create your domain name via the ASUS DDNS services, read
the Terms of Service and then select I will use the service and
accept the Terms of service and key in your domain name.
When done, click Next.
You can also select Skip ASUS DDNS settings then click Next
to skip the DDNS setting.
5. Click Finish to complete the setting.
6. To access the FTP site that you created, launch a web browser
or a third-party FTP client utility and key in the ftp link
(ftp://<domain name>.asuscomm.com) you have previously
created.
3. Select the access rights that you want to assign to the clients
accessing your shared data.
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3.5.2 Using Servers Center
Servers Center allows you to share the media files from the USB
disk via a Media Server directory, Samba share service, or FTP
share service. You can also configure other settings for the USB
disk in the Servers Center.
Using Media Server
Your wireless router allows DLNA-supported devices to access
multimedia files from the USB disk connected to your wireless
router.
NOTE: Before using the DLNA Media Server function, connect your
device to the RT-N18U’s network.
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To launch the Media Server setting page, go to General > USB
application > Servers Center > Media Servers tab. Refer to the
following for the descriptions of the fields:
• Enable DLNA Media Server: Select ON/OFF to enable/
disable the DLNA Media Server.
Enable iTunes Server?: Select ON/OFF to enable/disable the
iTunes Server.
• Media server directory: Select your media server directory
and click Apply to share files from the USB disk to media
devices in the network.
• Media Server Status: Displays the status of the media server.
Using Network Place (Samba) Share service
Network Place (Samba) Share allows you to set up the accounts
and permissions for the Samba service.
To use Samba share:
1. From the navigation panel, go to General > USB application >
Servers Center.
NOTE: Network Place (Samba) Share is enabled by default.
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To delete an existing account:
a) Select the account that you want to delete.
b) Click .
c) When prompted, click Delete to confirm the account
deletion.
To add a folder:
a) Click .
b) Enter the folder name, and click Add. The folder that you
created will be added to the folder list.
2. Follow the steps below to add, delete, or modify an account.
To create a new account:
a) Click to add new account.
b) In the Account and Password fields, key in the name and
password of your network client. Retype the password to
confirm. Click Add to add the account to the list.
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3. From the list of folders, select the type of access permission
that you want to assign for specific folders:
• R/W: Select this option to assign read/write access.
• R: Select this option to assign read-only access.
• No: Select this option if you do not want to share a specific
file folder.
4. Click Apply to apply the changes.
Using the FTP Share service
FTP share enables an FTP server to share files from USB disk to
other devices via your local area network or via the Internet.
IMPORTANT:
• EnsurethatyousafelyremovetheUSBdisk.Incorrectremovalofthe
USB disk may cause data corruption.
• TosafelyremovetheUSBdisk,refertothesectionSafely removing
the USB disk under 3.1.3 Monitoring your USB device.
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To use FTP Share service:
NOTE: Ensure that you have set up your FTP server through
AiDisk. For more details, refer to the section 3.5.1 Using AiDisk.
1. From the navigation panel, click General > USB application >
Servers Center > FTP Share tab.
2. From the list of folders, select the type of access rights that you
want to assign for specific folders:
• R/W: Select to assign read/write access for a specific folder.
• W: Select to assign write only access for a specific folder.
• R: Select to assign read only access for a specific folder.
• No: Select this option if you do not want to share a specific
folder.
3. Click Apply to confirm the changes.
4. To access the FTP server, key in the ftp link
ftp://<hostname>.asuscomm.com and your user name and
password on a web browser or a third-party FTP utility.
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2. Configure the following settings:
• MaximumLoginUser
Set the maximum number of concurrent connections of the
Network Neighborhood or FTP Server.
NOTE: Some FTP clients may establish more than one connection.
Setting this number too low will lead to login failures.
• DeviceName
Assigns the name of the device as shown on the network.
For example, for a device with the name ABC, enter //ABC on
the Internet Explorer address bar to access the Network Place
service.
Miscellaneous setting
Miscellaneous setting allows you to configure other settings for
the USB disk, including the maximum number of user logins,
the device name, work group, and character set used on the FTP
server.
To configure Miscellaneous settings:
1. From the navigation panel, click General > USB application >
Servers Center > Miscellaneous setting tab.
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• WorkGroup
Assigns the name of the local RT-N18U network as seen in
Network Neighborhood.
NOTE: For Device Name and Work Group, the standard input
characters include letters (a-z, A-Z), digits (0-9), space, underscores(_),
and hyphens(-). The first and last character should not contain any
spaces. An invalid workgroup name makes it harder for other devices to
find your device in the network.
• CharactersetonFTPServer
Select the appropriate encoding used during data exchange
on the FTP server.
3.5.3 3G/4G
3G/4G USB modems can be connected to RT-N18U to allow
Internet access.
NOTE: For a list of verified USB modems, please visit:
http://event.asus.com/2009/networks/3gsupport/
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To set up 3G/4G internet access:
1. From the navigation panel, click General > USB application >
3G/4G.
2. In the Enable USB Modem field, select Yes .
3. Set up the following:
• Location: Select your 3G/4G service provider’s location from
the dropdown list.
• ISP: Select your Internet Service Provider (ISP) from the
dropdown list.
• APN (Access Point Name) service (optional): Contact your
3G/4G service provider for detailed information.
• Dial Number and PIN code: The 3G/4G provider’s access
number and PIN code for connection.
NOTE: PIN code may vary from different providers.
• Username / Password: The username and password will be
provided by the 3G/4G network carrier.
• USB Adapter: Choose your USB 3G / 4G adapter from the
dropdown list. If you are not sure of your USB adapter’s
model or the model is not listed in the options, select Auto.
4. Click Apply.
NOTE: The router will reboot for the settings to take effect.
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3.6 Using AiCloud
AiCloud is a cloud service application that allows you to save, sync,
share, and access your files.
To use AiCloud:
1. From Google Play Store or Apple Store, download and install
the ASUS AiCloud app to your smart device.
2. Connect your smart device to your network. Follow the
instructions to complete the AiCloud setup process.
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3.6.1 Cloud Disk
To create a cloud disk:
1. Insert a USB storage device into the wireless router.
2. Turn on Cloud Disk.
3. Go to https://router.asus.com and enter the router login
account and password. For better user experience, we
recommend that you use Google Chrome or Firefox.
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4. You can now start accessing Cloud Disk files on devices
connected to the network.
NOTE: When accessing the devices that are connected to the network,
you need to enter the device’s user name and password manually, which
will not be saved by AiCloud for security reason.
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3.6.2 Smart Access
The Smart Access function allows you to easily access your home
network via your router’s domain name.
NOTES:
• YoucancreateadomainnameforyourrouterwithASUSDDNS.For
more details, refer to section 4.3.5 DDNS.
• Bydefault,AiCloudprovidesasecureHTTPSconnection.Keyin
https://[yourASUSDDNSname].asuscomm.com for a very secure
Cloud Disk and Smart Access usage.
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3.6.3 Smart Sync
To use Smart Sync:
1. Launch AiCloud, click Smart Sync > Go.
2. Select ON to enable Smart Sync.
3. Click Add new account.
4. Enter your ASUS WebStorage account password and select the
directory that you want to sync with WebStorage.
5. Click Apply.
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4 Configuring the Advanced
Settings
4.1 Wireless
4.1.1 General
The General tab allows you to configure the basic wireless
settings.
To configure the basic wireless settings:
1. From the navigation panel, go to Advanced Settings >
Wireless > General tab.
2. Select 2.4GHz as the frequency band for your wireless network.
3. Assign a unique name containing up to 32 characters for your
SSID (Service Set Identifier) or network name to identify your
wireless network. Wi-Fi devices can identify and connect to
the wireless network via your assigned SSID. The SSIDs on the
information banner are updated once new SSIDs are saved to
the settings.
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4. In the Hide SSID field, select Ye s to prevent wireless devices
from detecting your SSID. When this function is enabled, you
would need to enter the SSID manually on the wireless device
to access the wireless network.
5. Select any of these wireless mode options to determine the
types of wireless devices that can connect to your wireless
router:
• Auto: Select Auto to allow 802.11n, 802.11g, and 802.11b
devices to connect to the wireless router.
• Legacy: Select Legacy to allow 802.11b/g/n devices to
connect to the wireless router. Hardware that supports
802.11n natively, however, will only run at a maximum speed
of 54Mbps.
• N only: Select N only to maximize wireless N performance.
This setting prevents 802.11g and 802.11b devices from
connecting to the wireless router.
6. Select the operating channel for your wireless router. Select
Auto to allow the wireless router to automatically select the
channel that has the least amount of interference.
7. Select any of these channel bandwidth to accommodate higher
transmission speeds:
40MHz: Select this bandwidth to maximize the wireless
throughput.
20MHz (default): Select this bandwidth if you encounter some
issues with your wireless connection.
8. Select any of these authentication methods:
• Open System: This option provides no security.
• Shared Key: You must use WEP encryption and enter at least
one shared key.
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• WPA/WPA2 Personal/WPA Auto-Personal: This option
provides strong security. You can use either WPA (with
TKIP) or WPA2 (with AES). If you select this option, you must
use TKIP + AES encryption and enter the WPA passphrase
(network key).
• WPA/WPA2 Enterprise/WPA Auto-Enterprise: This option
provides very strong security. It is with integrated EAP server
or an external RADIUS back-end authentication server.
• Radius with 802.1x
NOTE: Your wireless router supports the maximum transmission rate
of 54Mbps when the Wireless Mode is set to Auto and encryption
method is WEP or TKIP.
9. Select any of these WEP (Wired Equivalent Privacy) Encryption
options for the data transmitted over your wireless network:
• Off: Disables WEP encryption
• 64-bit: Enables weak WEP encryption
• 128-bit: Enables improved WEP encryption.
10.When done, click Apply.
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4.1.2 WPS
WPS (Wi-Fi Protected Setup) is a wireless security standard that
allows you to easily connect devices to a wireless network. You
can configure the WPS function via the PIN code or WPS button.
NOTE: Ensure that the devices support WPS.
To enable WPS on your wireless network:
1. From the navigation panel, go to Advanced Settings >
Wireless > WPS tab.
2. In the Enable WPS field, move the slider to ON.
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NOTE: WPS supports authentication using Open System, WPA-Personal,
and WPA2-Personal. WPS does not support a wireless network that uses
a Shared Key, WPA-Enterprise, WPA2-Enterprise, and RADIUS encryption
method.
3. In the WPS Method field, select Push Button or Client PIN
code. If you select Push Button, go to step 4. If you select
Client PIN code, go to step 5.
4. To set up WPS using the router’s WPS button, follow these
steps:
a. Click Start or press the WPS button found at the rear of the
wireless router.
b. Press the WPS button on your wireless device. This is
normally identified by the WPS logo.
NOTE: Check your wireless device or its user manual for the location of
the WPS button.
c. The wireless router will scan for any available WPS devices.
If the wireless router does not find any WPS devices, it will
switch to standby mode.
5. To set up WPS using the Client’s PIN code, follow these steps:
a. Locate the WPS PIN code on your wireless device’s user
manual or on the device itself.
b. Key in the Client PIN code on the text box.
c. Click Start to put your wireless router into WPS survey mode.
The router’s LED indicators quickly flash three times until the
WPS setup is completed.
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4.1.3 Bridge
Bridge or WDS (Wireless Distribution System) allows your ASUS
wireless router to connect to another wireless access point
exclusively, preventing other wireless devices or stations to access
your ASUS wireless router. It can also be considered as a wireless
repeater where your ASUS wireless router communicates with
another access point and other wireless devices.
To set up the wireless bridge:
1. From the navigation panel, go to Advanced Settings >
Wireless > Bridge tab.
2. Select the frequency band for the wireless bridge.
3. In the AP Mode field, select any of these options:
• APOnly: Disables the Wireless Bridge function.
• WDSOnly: Enables the Wireless Bridge feature but prevents
other wireless devices/stations from connecting to the
router.
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• HYBRID: Enables the Wireless Bridge feature and allows
other wireless devices/stations to connect to the router.
NOTE: In Hybrid mode, wireless devices connected to the ASUS wireless
router will only receive half the connection speed of the Access Point.
4. In the Connect to APs in list field, click Yes if you want to
connect to an Access Point listed in the Remote AP List.
5. In the Control Channel field, select the operating channel
for the wireless bridge. Select Auto to allow the router to
automatically select the channel with the least amount of
interference.
NOTE: Channel availability varies per country or region.
6. On the Remote AP List, key in a MAC address and click the Add
button to enter the MAC address of other available Access
Points.
NOTE: Any Access Point added to the list should be on the same Control
Channel as the ASUS wireless router.
7. Click Apply.
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4.1.4 Wireless MAC Filter
Wireless MAC filter provides control over packets transmitted to
a specified MAC (Media Access Control) address on your wireless
network.
To set up the Wireless MAC filter:
1. From the navigation panel, go to Advanced Settings >
Wireless > Wireless MAC Filter tab.
2. In the Frequency field, select the frequency band that you
want to use for the Wireless MAC filter.
3. In the MAC Filter Mode dropdown list, select either Accept or
Reject.
• SelectAccept to allow devices in the MAC filter list to access
to the wireless network.
• SelectReject to prevent devices in the MAC filter list to
access to the wireless network.
4. On the MAC filter list, click the Add button and key in the
MAC address of the wireless device.
5. Click Apply.
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4.1.5 RADIUS Setting
RADIUS (Remote Authentication Dial In User Service) Setting
provides an extra layer of security when you choose WPA-
Enterprise, WPA2-Enterprise, or Radius with 802.1x as your
Authentication Mode.
To set up wireless RADIUS settings:
1. Ensure that the wireless router’s authentication mode is set to
WPA-Enterprise, WPA2-Enterprise, or Radius with 802.1x.
NOTE: Please refer to section 4.1.1 General section for configuring your
wireless router’s Authentication Mode.
2. From the navigation panel, go to Advanced Settings >
Wireless > RADIUS Setting.
3. Select the frequency band.
4. In the Server IP Address field, key in your RADIUS server’s IP
Address.
5. In the Connection Secret field, assign the password to access
your RADIUS server.
6. Click Apply.
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In the Professional Settings screen, you can configure the
following:
• Frequency: Select the frequency band that the professional
settings will be applied to.
• Enable Radio: Select Yes to enable wireless networking.
Select No to disable wireless networking.
• Date to Enable Radio (weekdays): You can specify which
days of the week wireless networking is enabled.
• Time of Day to Enable Radio: You can specify a time range
when wireless networking is enabled during the week.
4.1.6 Professional
The Professional screen provides advanced configuration options.
NOTE: We recommend that you use the default values on this page.
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• Date to Enable Radio (weekend): You can specify which
days of the weekend wireless networking is enabled.
• Time of Day to Enable Radio: You can specify a time range
when wireless networking is enabled during the weekend.
• Set AP isolated: The Set AP isolated item prevents wireless
devices on your network from communicating with each
other. This feature is useful if many guests frequently join or
leave your network. Select Ye s to enable this feature or select
No to disable.
• Multicast rate (Mbps): Select the multicast transmission
rate or click Disable to switch off simultaneous single
transmission.
• Preamble Type: Preamble Type defines the length of time
that the router spent for CRC (Cyclic Redundancy Check). CRC
is a method of detecting errors during data transmission.
Select Short for a busy wireless network with high network
traffic. Select Long if your wireless network is composed of
older or legacy wireless devices.
• RTS Threshold: Select a lower value for RTS (Request to
Send) Threshold to improve wireless communication in a
busy or noisy wireless network with high network traffic and
numerous wireless devices.
• DTIM Interval: DTIM (Delivery Traffic Indication Message)
Interval or Data Beacon Rate is the time interval before a
signal is sent to a wireless device in sleep mode indicating
that a data packet is awaiting delivery. The default value is
three milliseconds.
• Beacon Interval: Beacon Interval is the time between one
DTIM and the next. The default value is 100 milliseconds.
Lower the Beacon Interval value for an unstable wireless
connection or for roaming devices.
• Enable TX Bursting: Enable TX Bursting improves
transmission speed between the wireless router and 802.11g
devices.
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• Wireless multicast forwarding: Select Enable to allow the
wireless router to forward multicast traffic to other wireless
devices that support multicast. Select Disable to prevent the
router from forwarding multicast transmissions.
• Enable WMM APSD: Enable WMM APSD (Wi-Fi Multimedia
Automatic Power Save Delivery) to improve power
management between wireless devices. Select Disable to
switch off WMM APSD.
• TX Power adjustment: TX Power adjustment refers to the
milliWatts (mW) needed to power the radio signal output of
the wireless router. Enter a value between 0 to 100.
NOTE: Increasing the TX Power adjustment values may affect the
stability of the wireless network.
4.2 LAN
4.2.1 LAN IP
The LAN IP screen allows you to modify the LAN IP settings of your
wireless router.
NOTE: Any changes to the LAN IP address will be reflected on your
DHCP settings.
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To modify the LAN IP settings:
1. From the navigation panel, go to Advanced Settings > LAN >
LAN IP tab.
2. Modify the IP address and Subnet Mask.
3. When done, click Apply.
4.2.2 DHCP Server
Your wireless router uses DHCP to assign IP addresses
automatically on your network. You can specify the IP address
range and lease time for the clients on your network.
To configure the DHCP server:
1. From the navigation panel, go to Advanced Settings > LAN >
DHCP Server tab.
2. In the Enable the DHCP Server field, tick Yes.
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3. In the Domain Name text box, enter a domain name for the
wireless router.
4. In the IP Pool Starting Address field, key in the starting IP
address.
5. In the IP Pool Ending Address field, key in the ending IP
address.
6. In the Lease Time field, specify in seconds when an assigned
IP address will expire. Once it reaches this time limit, the DHCP
server will then assign a new IP address.
NOTES:
• We recommend that you use an IP address format of 192.168.1.xxx
(where xxx can be any number between 2 and 254) when specifying
an IP address range.
• AnIPPoolStartingAddressshouldnotbegreaterthantheIPPool
Ending Address.
7. In the DNS and Server Settings section, key in your DNS
Server and WINS Server IP address if needed.
8. Your wireless router can also manually assign IP addresses to
devices on the network. On the Enable Manual Assignment
field, choose Yes to assign an IP address to specific MAC
addresses on the network. Up to 32 MAC Addresses can be
added to the DHCP list for manual assignment.
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4.2.3 Route
If your network makes use of more than one wireless router, you
can configure a routing table to share the same Internet service.
NOTE: We recommend that you do not change the default route
settings unless you have advanced knowledge of routing tables.
To configure the LAN Routing table:
1. From the navigation panel, go to Advanced Settings > LAN >
Route tab.
2. On the Enable static routes field, choose Yes.
3. On the Static Route List, enter the network information of
other access points or nodes. Click the Add or Delete
button to add or remove a device on the list.
4. Click Apply.
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4.2.4 IPTV
The wireless router supports connection to IPTV services through
an ISP or a LAN. The IPTV tab provides the configuration settings
needed to set up IPTV, VoIP, multicasting, and UDP for your
service. Contact your ISP for specific information regarding your
service.
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4.3 WAN
4.3.1 Internet Connection
The Internet Connection screen allows you to configure the
settings of various WAN connection types.
To configure the WAN connection settings:
1. From the navigation panel, go to Advanced Settings > WAN >
Internet Connection tab.
2. Configure the following settings below. When done, click
Apply.
• WAN Connection Type: Choose your Internet Service Provider
type. The choices are Automatic IP, PPPoE, PPTP, L2TP or
fixed IP. Consult your ISP if the router is unable to obtain a
valid IP address or if you are unsure the WAN connection type.
• Enable WAN: Select Ye s to allow the router Internet access.
Select No to disable Internet access.
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• Enable NAT: NAT (Network Address Translation) is a system
where one public IP (WAN IP) is used to provide Internet
access to network clients with a private IP address in a LAN.
The private IP address of each network client is saved in a NAT
table and is used to route incoming data packets.
• Enable UPnP: UPnP (Universal Plug and Play) allows several
devices (such as routers, televisions, stereo systems, game
consoles, and cellular phone), to be controlled via an IP-based
network with or without a central control through a gateway.
UPnP connects PCs of all form factors, providing a seamless
network for remote configuration and data transfer. Using
UPnP, a new network device is discovered automatically.
Once connected to the network, devices can be remotely
configured to support P2P applications, interactive gaming,
video conferencing, and web or proxy servers. Unlike Port
forwarding, which involves manually configuring port
settings, UPnP automatically configures the router to accept
incoming connections and direct requests to a specific PC on
the local network.
• Connect to DNS Server: Allows this router to get the DNS
IP address from the ISP automatically. A DNS is a host on
the Internet that translates Internet names to numeric IP
addresses.
• Authentication: This item may be specified by some ISPs.
Check with your ISP and fill them in if required.
• Host Name: This field allows you to provide a host name for
your router. It is usually a special requirement from your ISP.
If your ISP assigned a host name to your computer, enter the
host name here.
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• MAC Address: MAC (Media Access Control) address is a
unique identifier for your networking device. Some ISPs
monitor the MAC address of networking devices that connect
to their service and reject any unrecognized device that
attempt to connect. To avoid connection issues due to an
unregistered MAC address, you can:
• ContactyourISPandupdatetheMACaddressassociated
with your ISP service.
• CloneorchangetheMACaddressoftheASUSwirelessrouter
to match the MAC address of the previous networking device
recognized by the ISP.
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4.3.2 Port Trigger
Port range triggering opens a predetermined incoming port for a
limited period of time whenever a client on the local area network
makes an outgoing connection to a specified port. Port triggering
is used in the following scenarios:
• More than one local client needs port forwarding for the
same application at a different time.
• An application requires specific incoming ports that are
different from the outgoing ports.
To set up Port Trigger:
1. From the navigation panel, go to Advanced Settings > WAN >
Port Trigger tab.
2. Configure the following settings below. When done, click
Apply.
• Enable Port Trigger: Choose Yes to enable Port Trigger.
• Well-Known Applications: Select popular games and web
services to add to the Port Trigger List.
• Description: Enter a short name or description for the service.
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• Trigger Port: Specify a trigger port to open the incoming port.
• Protocol: Select the protocol, TCP, or UDP.
• Incoming Port: Specify an incoming port to receive inbound
data from the Internet.
• Protocol: Select the protocol, TCP, or UDP.
NOTES:
• WhenconnectingtoanIRCserver,aclientPCmakesanoutgoing
connection using the trigger port range 66660-7000. The IRC server
responds by verifying the username and creating a new connection
to the client PC using an incoming port.
• IfPortTriggerisdisabled,therouterdropstheconnectionbecause
it is unable to determine which PC is requesting for IRC access.
When Port Trigger is enabled, the router assigns an incoming port to
receive the inbound data. This incoming port closes once a specific
time period has elapsed because the router is unsure when the
application has been terminated.
• Porttriggeringonlyallowsoneclientinthenetworktousea
particular service and a specific incoming port at the same time.
• Youcannotusethesameapplicationtotriggeraportinmorethan
one PC at the same time. The router will only forward the port back
to the last computer to send the router a request/trigger.
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4.3.3 Virtual Server/Port Forwarding
Port forwarding is a method to direct network traffic from the
Internet to a specific port or a specific range of ports to a device
or number of devices on your local network. Setting up Port
Forwarding on your router allows PCs outside the network to
access specific services provided by a PC in your network.
NOTE: When port forwarding is enabled, the ASUS router blocks
unsolicited inbound traffic from the Internet and only allows replies
from outbound requests from the LAN. The network client does not
have access to the Internet directly, and vice versa.
To set up Port Forwarding:
1. From the navigation panel, go to Advanced Settings > WAN >
Virtual Server / Port Forwarding tab.
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2. Configure the following settings below. When done, click
Apply.
• Enable Port Forwarding: Choose Yes to enable Port
Forwarding.
• Famous Server List: Determine which type of service you
want to access.
• Famous Game List: This item lists ports required for popular
online games to work correctly.
• FTP Server Port: Avoid assigning the port range 20:21 for
your FTP server as this would conflict with the router’s native
FTP server assignment.
• Service Name: Enter a service name.
• Port Range: If you want to specify a Port Range for clients
on the same network, enter the Service Name, the Port
Range (e.g. 10200:10300), the LAN IP address, and leave the
Local Port empty. Port range accepts various formats such
as Port Range (300:350), individual ports (566,789) or Mix
(1015:1024,3021).
NOTES:
• Whenyournetwork’sfirewallisdisabledandyouset80astheHTTP
server’s port range for your WAN setup, then your http server/web
server would be in conflict with the router’s web user interface.
• Anetworkmakesuseofportsinordertoexchangedata,witheach
port assigned a port number and a specific task. For example, port 80
is used for HTTP. A specific port can only be used by one application
or service at a time. Hence, two PCs attempting to access data
through the same port at the same time would fail. For example, you
cannot set up Port Forwarding for port 100 for two PCs at the same
time.
71
• Local IP: Key in the client’s LAN IP address.
NOTE: Use a static IP address for the local client to make port forwarding
work properly. Refer to section 4.2 LAN for information.
• Local Port: Enter a specific port to receive forwarded packets.
Leave this field blank if you want the incoming packets to be
redirected to the specified port range.
• Protocol: Select the protocol. If you are unsure, select BOTH.
To check if Port Forwarding has been configured successfully:
• Ensure that your server or application is set up and running.
• You will need a client outside your LAN but has Internet
access (referred to as “Internet client”). This client should not
be connected to the ASUS router.
• On the Internet client, use the router’s WAN IP to access the
server. If port forwarding has been successful, you should be
able to access the files or applications.
Differences between port trigger and port forwarding:
• Port triggering will work even without setting up a specific
LAN IP address. Unlike port forwarding, which requires a
static LAN IP address, port triggering allows dynamic port
forwarding using the router. Predetermined port ranges are
configured to accept incoming connections for a limited
period of time. Port triggering allows multiple computers
to run applications that would normally require manually
forwarding the same ports to each PC on the network.
• Port triggering is more secure than port forwarding since the
incoming ports are not open all the time. They are opened
only when an application is making an outgoing connection
through the trigger port.
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4.3.4 DMZ
Virtual DMZ exposes one client to the Internet, allowing this
client to receive all inbound packets directed to your Local Area
Network.
Inbound traffic from the Internet is usually discarded and routed
to a specific client only if port forwarding or a port trigger has
been configured on the network. In a DMZ configuration, one
network client receives all inbound packets.
Setting up DMZ on a network is useful when you need incoming
ports open or you want to host a domain, web, or e-mail server.
CAUTION: Opening all the ports on a client to the Internet makes the
network vulnerable to outside attacks. Please be aware of the security
risks involved in using DMZ.
To set up DMZ:
1. From the navigation panel, go to Advanced Settings > WAN >
DMZ tab.
2. Configure the setting below. When done, click Apply.
• IP address of Exposed Station: Key in the client’s LAN IP
address that will provide the DMZ service and be exposed
on the Internet. Ensure that the server client has a static IP
address.
To remove DMZ:
1. Delete the client’s LAN IP address from the IP Address of
Exposed Station text box.
2. When done, click Apply.
73
4.3.5 DDNS
Setting up DDNS (Dynamic DNS) allows you to access the router
from outside your network through the provided ASUS DDNS
Service or another DDNS service.
To set up DDNS:
1. From the navigation panel, go to Advanced Settings > WAN >
DDNS tab.
2. Configure the following settings below. When done, click
Apply.
• Enable the DDNS Client: Enable DDNS to access the ASUS
router via the DNS name rather than WAN IP address.
• Server and Host Name: Choose ASUS DDNS or other DDNS.
If you want to use ASUS DDNS, fill in the Host Name in the
format of xxx.asuscomm.com (xxx is your host name).
• If you want to use a different DDNS service, click FREE TRIAL
and register online first. Fill in the User Name or E-mail
Address and Password or DDNS Key fields.
74
• Enable wildcard: Enable wildcard if your DDNS service
requires one.
NOTES:
DDNS service will not work under these conditions:
• WhenthewirelessrouterisusingaprivateWANIPaddress(192.168.
x.x, 10.x.x.x, or 172.16.x.x), as indicated by a yellow text.
• TheroutermaybeonanetworkthatusesmultipleNATtables.
4.3.6 NAT Passthrough
NAT Passthrough allows a Virtual Private Network (VPN)
connection to pass through the router to the network clients.
PPTP Passthrough, L2TP Passthrough, IPsec Passthrough and RTSP
Passthrough are enabled by default.
To enable / disable the NAT Passthrough settings, go to the
Advanced Settings > WAN > NAT Passthrough tab. When done,
click Apply.
75
4.4 IPv6
This wireless router supports IPv6 addressing, a system that
supports more IP addresses. This standard is not yet widely
available. Contact your ISP if your Internet service supports IPv6.
To set up IPv6:
1. From the navigation panel, go to Advanced Settings > IPv6.
2. Select your Connection Type. The configuration options vary
depending on your selected connection type.
3. Enter your IPv6 LAN and DNS settings.
4. Click Apply.
NOTE: Please refer to your ISP regarding specific IPv6 information for
your Internet service.
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4.5 VPN Server
VPN (Virtual Private Network) provides a secure communication
to a remote computer or remote network using a public network
such as the Internet.
NOTE: Before setting up a VPN connection, you would need the IP
address or domain name of the VPN server you are trying to access.
To set up access to a VPN server:
1. From the navigation panel, go to Advanced Settings > VPN
Server.
2. On the Enable PPTP Server field, select Yes .
3. On the Network Place (Samba) Support field, select Ye s.
4. Enter the user name and password for accessing the VPN
server. Click the button.
5. Click Apply.
NOTE: For advanced VPN server settings, click the VPN Server tab to
configure broadcast support, authentication, MPPE Encryption, and
Client IP address range.
77
4.6 Firewall
The wireless router can serve as a hardware firewall for your
network.
NOTE: The Firewall feature is enabled by default.
4.6.1 General
To set up basic Firewall settings:
1. From the navigation panel, go to Advanced Settings >
Firewall > General tab.
2. On the Enable Firewall field, select Yes.
3. On the Enable DoS protection, select Ye s to protect your
network from DoS (Denial of Service) attacks though this may
affect your router’s performance.
4. You can also monitor packets exchanged between the LAN
and WAN connection. On the Logged packets type, select
Dropped, Accepted, or Both.
5. Click Apply.
4.6.2 URL Filter
You can specify keywords or web addresses to prevent access to
specific URLs.
NOTE: The URL Filter is based on a DNS query. If a network client has
already accessed a website such as http://www.abcxxx.com, then the
website will not be blocked (a DNS cache in the system stores previously
visited websites). To resolve this issue, clear the DNS cache before
setting up the URL Filter.
78
To set up a URL filter:
1. From the navigation panel, go to Advanced Settings >
Firewall > URL Filter tab.
2. On the Enable URL Filter field, select Enabled.
3. Enter a URL and click the button.
4. Click Apply.
4.6.3 Keyword filter
Keyword filter blocks access to webpages containing specified
keywords.
To set up a keyword filter:
1. From the navigation panel, go to Advanced Settings >
Firewall > Keyword Filter tab.
2. On the Enable Keyword Filter field, select Enabled.
79
3. Enter a word or phrase and click the Add button.
4. Click Apply.
NOTES:
• The Keyword Filter is based on a DNS query. If a network client has
already accessed a website such as http://www.abcxxx.com, then
the website will not be blocked (a DNS cache in the system stores
previously visited websites). To resolve this issue, clear the DNS cache
before setting up the Keyword Filter.
• Web pages compressed using HTTP compression cannot be filtered.
HTTPS pages also cannot be blocked using a keyword filter.
4.6.4 Network Services Filter
The Network Services Filter blocks LAN to WAN packet exchanges
and restricts network clients from accessing specific web services
such as Telnet or FTP.
80
To set up a Network Service filter:
1. From the navigation panel, go to Advanced Settings >
Firewall > Network Service Filter tab.
2. On the Enable Network Services Filter field, select Yes .
3. Select the Filter table type. Black List blocks the specified
network services. White List limits access to only the specified
network services.
4. Specify the day and time when the filters will be active.
5. To specify a Network Service to filter, enter the Source IP,
Destination IP, Port Range, and Protocol. Click the button.
6. Click Apply.
81
4.7 Administration
4.7.1 Operation Mode
The Operation Mode page allows you to select the appropriate
mode for your network.
To set up the operating mode:
1. From the navigation panel, go to Advanced Settings >
Administration > Operation Mode tab.
2. Select any of these operation modes:
• Wireless router mode (default): In wireless router mode,
the wireless router connects to the Internet and provides
Internet access to available devices on its own local network.
• Media Bridge: This setup requires two wireless routers.
The second router serves as a media bridge where multiple
devices such as Smart TVs and gaming consoles can be
connected via ethernet.
• Access Point mode: In this mode, the router creates a new
wireless network on an exising network.
3. Click Apply.
NOTE: The router will reboot when you change the modes.
82
4.7.2 System
The System page allows you to configure your wireless router
settings.
To set up the System settings:
1. From the navigation panel, go to Advanced Settings >
Administration > System tab.
2. You can configure the following settings:
• Change router login password: You can change the
password and login name for the wireless router by entering
a new name and password.
• WPS button behavior: The physical WPS button on the
wireless router can be used to activate WPS.
• Time Zone: Select the time zone for your network.
• NTP Server: The wireless router can access a NTP (Network
time Protocol) server in order to synchronize the time.
• Enable Telnet: Click Yes to enable Telnet services on the
network. Click No to disable Telnet.
• Authentication Method: You can select HTTP, HTTPS, or
both protocols to secure router access.
• Enable Web Access from WAN: Select Yes to allow devices
outside the network to access the wireless router GUI
settings. Select No to to prevent access.
• Only allow specific IP: Click Yes if you want to specify the IP
addresses of devices that are allowed access to the wireless
router GUI settings from WAN.
• Client List: Enter the WAN IP addresses of networking
devices allowed to access the wireless router settings. This
list will be used if you clicked Yes in the Only allow specific
IP item.
3. Click Apply.
83
4.7.3 Firmware Upgrade
NOTE: Download the latest firmware from the ASUS website at
http://www.asus.com
To upgrade the firmware:
1. From the navigation panel, go to Advanced Settings >
Administration > Firmware Upgrade tab.
2. In the New Firmware File field, click Browse to locate the
downloaded file.
3. Click Upload.
NOTES:
• Whentheupgradeprocessiscomplete,waitforsometimeforthe
system to reboot.
• Iftheupgradeprocessfails,thewirelessrouterautomaticallyenters
rescue mode and the power LED indicator on the front panel starts
flashing slowly. To recover or restore the system, refer to section 5.2
Firmware Restoration.
4.7.4 Restore/Save/Upload Setting
To restore/save/upload wireless router settings:
1. From the navigation panel, go to Advanced Settings >
Administration > Restore/Save/Upload Setting tab.
2. Select the tasks that you want to do:
• Torestoretothedefaultfactorysettings,clickRestore, and
click OK in the confirmation message.
• Tosavethecurrentsystemsettings,clickSave, navigate to
the folder where you intend to save the file and click Save.
• Torestorefromasavedsystemsettingsle,clickBrowse to
locate your file, then click Upload.
If issues occur, upload the latest firmware version and configure new
settings. Do not restore the router to its default settings.
84
4.8 System Log
System Log contains your recorded network activities.
NOTE: System log resets when the router is rebooted or powered off.
To view your system log:
1. From the navigation panel, go to Advanced Settings > System
Log.
2. You can view your network activities in any of these tabs:
• GeneralLog
• DHCPLeases
• WirelessLog
• PortForwarding
• RoutingTable
85
5 Utilities
NOTES:
• Downloadandinstallthewirelessrouter'sutilitiesfromtheASUS
website:
• DeviceDiscoveryv1.4.7.1athttp://dlcdnet.asus.com/pub/ASUS/
LiveUpdate/Release/Wireless/Discovery.zip
• FirmwareRestorationv1.9.0.4athttp://dlcdnet.asus.com/pub/
ASUS/LiveUpdate/Release/Wireless/Rescue.zip
• WindowsPrinterUtilityv1.0.5.5athttp://dlcdnet.asus.com/pub/
ASUS/LiveUpdate/Release/Wireless/Printer.zip
• TheutilitiesarenotsupportedonMACOS.
5.1 Device Discovery
Device Discovery is an ASUS WLAN utility that detects an ASUS
wireless router device, and allows you to configure the wireless
networking settings.
To launch the Device Discovery utility:
• Fromyourcomputer’sdesktop,click
Start > All Programs > ASUS Utility > RT-N18U Wireless
Router > Device Discovery.
RT-N18U
RT-N18U
NOTE: When you set the router to Access Point mode, you need to use
Device Discovery to get the router’s IP address.
86
5.2 Firmware Restoration
Firmware Restoration is used on an ASUS Wireless Router that
failed during its firmware upgrading process. It uploads the
firmware that you specify. The process takes about three to four
minutes.
IMPORTANT: Launch the rescue mode on the router before using the
Firmware Restoration utility.
NOTE: This feature is not supported on MAC OS.
To launch the rescue mode and use the Firmware Restoration
utility:
1. Unplug the wireless router from the power source.
2. Hold the Reset button at the rear panel and simultaneously
replug the wireless router into the power source. Release the
Reset button when the Power LED at the front panel flashes
slowly, which indicates that the wireless router is in the rescue
mode.
87
3. Set a static IP on your computer and use the following to set up
your TCP/IP settings:
IP address: 192.168.1.x
Subnet mask: 255.255.255.0
4. From your computer’s desktop, click
Start > All Programs > ASUS Utility RT-N18U Wireless
Router > Firmware Restoration.
5. Specify a firmware file, then click Upload.
NOTE: This is not a firmware upgrade utility and cannot be used on
a working ASUS Wireless Router. Normal firmware upgrades must be
done through the web interface. Refer to Chapter 4: Configuring the
Advanced Settings for more details.
5.3 Setting up your printer server
5.3.1 ASUS EZ Printer Sharing
ASUS EZ Printing Sharing utility allows you to connect a USB
printer to your wireless router’s USB port and set up the print
server. This allows your network clients to print and scan files
wirelessly.
88
NOTE: The print server function is supported on Windows® XP,
Windows® Vista, and Windows® 7.
To set up the EZ Printer sharing mode:
1. From the navigation panel, go to General > USB Application >
Network Printer Server.
2. Click Download Now! to download the network printer utility.
NOTE: Network printer utility is supported on Windows® XP, Windows®
Vista, and Windows® 7 only. To install the utility on Mac OS, select Use
LPR protocol for sharing printer.
3. Unzip the downloaded file and click the Printer icon to run the
network printer setup program.
89
4. Follow the onscreen instructions to set up your hardware, then
click Next.
5. Wait a few minutes for the initial setup to finish. Click Next.
6. Click Finish to complete the installation.
90
8. After the printer’s driver installation is complete, network
clients can now use the printer.
7. Follow the Windows
®
OS instructions to install the printer driver.
91
5.3.2 Using LPR to Share Printer
You can share your printer with computers running on Windows®
and MAC operating system using LPR/LPD (Line Printer Remote/
Line Printer Daemon).
Sharing your LPR printer
To share your LPR printer:
1. From the Windows® desktop, click Start > Devices and
Printers > Add a printer to run the Add Printer Wizard.
2. Select Add a local printer and then click Next.
92
3. Select Create a new port then set Type of Port to Standard
TCP/IP Port. Click New Port.
4. In the Hostname or IP address field, key in the IP address of
the wireless router then click Next.
93
5. Select Custom then click Settings.
6. Set Protocol to LPR. In the Queue Name field, key in
LPRServer then click OK to continue.
94
7. Click Next to finish setting up the standard TCP/IP port.
8. Install the printer driver from the vendor-model list. If your
printer is not in the list, click Have Disk to manually install the
printer drivers from a CD-ROM or file.
95
9. Click Next to accept the default name for the printer.
10. Click Finish to complete the installation.
96
5.4 Download Master
Download Master is a utility that helps you download files even
while your laptops or other devices are switched off.
NOTE: You need a USB device connected to the wireless router to use
Download Master.
To use Download Master:
1. Click General > USB application > Download Master to
download and install the utility automatically.
NOTE: If you have more than one USB drive, select the USB device you
want to download the files to.
2. After the download process is finished, click the Download
Master icon to start using the utility.
3. Click Add to add a download task.
4. Select a download type such as BitTorrent, HTTP, or FTP. Provide
a torrent file or a URL to begin downloading.
NOTE: For details on Bit Torrent, refer to section 5.4.1 Configuring the
Bit Torrent download settings.
97
5. Use the navigation panel to configure the advanced settings.
To configure BitTorrent download settings:
1. From Download Master’s navigation panel, click Bit Torrent to
launch the Bit Torrent Setting page.
2. Select a specific port for your download task.
3. To prevent network congestion, you can limit the maximum
upload and download speeds under Speed Limits.
4. You can limit the maximum number of allowed peers and
enable or disable file encryption during downloads.
5.4.1 Configuring Bit Torrent download settings
98
5.4.2 NZB settings
You can set up a USENET server to download NZB files. After
entering USENET settings, Apply.
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6 Troubleshooting
This chapter provides solutions for issues you may encounter with
your router. If you encounter problems that are not mentioned in
this chapter, visit the ASUS support site at:
http://support.asus.com/ for more product information and
contact details of ASUS Technical Support.
6.1 Basic Troubleshooting
If you are having problems with your router, try these basic steps
in this section before looking for further solutions.
Upgrade Firmware to the latest version.
1. Launch the Web GUI. Go to Advanced Settings >
Administration > Firmware Upgrade tab. Click Check to
verify if the latest firmware is available.
2. If the latest firmware is available, visit the ASUS global
website at http://www.asus.com/Networks/Wireless_Routers/
RTN18U/#download to download the latest firmware.
3. From the Firmware Upgrade page, click Browse to locate the
firmware file.
4. Click Upload to upgrade the firmware.
… 99 …

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