A personal software firewall is blocking communication between the printer
and the computer
The personal software firewall is a security program that protects a computer from
intrusion. However, the personal firewall might block communication between the
computer and the printer.
If you cannot communicate with the printer, try disabling the personal firewall. If you
are still unable to communicate with the printer, then re-enable the firewall.
If disabling the firewall allows you to communicate with the printer, you might want
to assign the printer a static IP address and then re-enable the firewall. To assign
the printer a static IP address, see the network guide that came with the printer.
The Wireless Access Point filters MAC addresses
MAC filtering is a security feature in which a Wireless Access Point (WAP) is
configured with a list of MAC addresses (also called hardware addresses) of devices
that are allowed to gain access to the network through the WAP.
If the WAP does not have the hardware address of a device attempting to access
the network, the WAP denies the device access to the network.
If the WAP filters MAC addresses, then the printer's MAC address must be added
to the WAP's list of accepted MAC addresses.
1. Print an HP Report page.
2. Find the printer's hardware address on the HP Report page.
3. Open the WAP's configuration utility, then add the printer's hardware address
to the list of accepted MAC addresses.
Printer has the wrong network settings
If one of these network settings in the printer is incorrect, you will not be able to
communicate with the printer:
• Communication Mode
• Network Name (SSID)
• Channel (Ad hoc networks only)
• Authentication Type
• Encryption
• WPA
Follow these steps to correct the printer's network settings:
1. Connect the printer to your network or computer with an Ethernet cable.
2. Open the printer's embedded Web server (EWS).
HP Deskjet 6800 series printer
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