D-Link NetDefend DFL-CP310 User Manual page 456

Connectivity
• Check your TCP/IP configuration according to
the NetDefend firewall
• Restart your NetDefend firewall 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" or "my.vpn" to your proxy exceptions list.
My network seems extremely slow. What should I do?
• The Ethernet cables may be faulty. For proper operation, the NetDefend
firewall 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
NetDefend firewall unit. See
418.
I am using the NetDefend firewall behind another NAT device, and I am having problems with
some applications. What should I do?
By default, the NetDefend firewall performs Network Address Translation (NAT).
It is possible to use the NetDefend firewall 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 NetDefend firewall.
To fix this problem, do ONE of the following. (The solutions are listed in order of
preference.)
440
on page 15.
T
R esetting the NetDefend firewall to Defaults
T
I nstalling and Setting up
T
D-Link NetDefend firewall User Guide
on page
T