47D-Link DSL-2680 User Manual
Chapter 4 - Advanced Setup
Firewall & DMZ
Use the Firewall & DMZ menu to enable or disable basic rewall protection from Denial of Service and other attacks from the WAN.
Firewall Settings
Enable the Firewall to block Denial of Service attacks, ood pings, port scans and
other common exploitative attacks that might come from the Internet. This is enabled
by default. To disable it, click the Enable Firewall box to remove the check mark
and click the Apply Settings button.
DMZ Settings
Firewalls may conict with certain interactive applications such as video conferencing
or playing Internet video games. For these applications, a rewall bypass can be set
up using a DMZ IP address. The DMZ IP address is a “visible” address and does not
benet from the full protection of the rewall function. Therefore it is advisable that
other security precautions be enabled to protect the other computers and devices
on the LAN. It may be wise to use isolate the device with the DMZ IP address from
the rest of the LAN.
For example, if you want to use video conferencing and still use a rewall, you can
place the server in the DMZ. The IP address of this server will then be the DMZ IP
address. You can designate the server’s IP address as the DMZ by typing in the
IP address in the DMZ IP Address space provided and then enabling its status by
selecting the Enable DMZ option. Click the Apply Settings button at the bottom
of the window when you are nished.
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