User guide

Connectivity
Chapter 19: Troubleshooting 391
Note: 192.168.10 is the default value, and it may vary if you changed it in the My
Network page.
• Check your TCP/IP configuration according to Installing and Setting up the
ZoneAlarm Router on page
19.
• Restart your ZoneAlarm router and your broadband modem by disconnecting the
power and reconnecting after 5 seconds.
• If your Web browser is configured to use an HTTP proxy to access the
Internet, add my.firewall to your proxy exceptions list.
My network seems extremely slow. What should I do?
• The Ethernet cables may be faulty. For proper operation, the ZoneAlarm router
requires STP CAT5 (Shielded Twisted Pair Category 5) Ethernet cables. Make
sure that this specification is printed on your cables.
• Your Ethernet card may be faulty or incorrectly configured. Try replacing your
Ethernet card.
• There may be an IP address conflict in your network. Check that the TCP/IP
settings of all your computers are configured to obtain an IP address
automatically.
I changed the network settings to incorrect values and am unable to correct my error. What
should I do?
Reset the network to its default settings using the button on the back of the ZoneAlarm
router unit. See Resetting the ZoneAlarm Router to Defaults on page
361.
I am using the ZoneAlarm router behind another NAT device, and I am having problems with
some applications. What should I do?
By default, the ZoneAlarm router performs Network Address Translation (NAT). It is
possible to use the ZoneAlarm router behind another device that performs NAT, such as a
DSL router or Wireless router, but the device will block all incoming connections from
reaching your ZoneAlarm router.
To fix this problem, do ONE of the following. (The solutions are listed in order of
preference.)
• Consider whether you really need the router. The ZoneAlarm router can be used
as a replacement for your router, unless you need it for some additional
functionality that it provides.