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Some advanced functions of your router
Firewall, port forwarding, DMZ & traffic restrictions
By default a preset firewall is invoked to block all incoming requests including
Ping from the Internet to your private network. In the reverse direction all requests
sent from your network can freely pass through to the Internet.
If you want servers on your network accessible to Internet users, set up port
forwarding in Advanced > Virtual Servers > Port Forwarding. Refer to Chapter
4 – NAT Virtual Servers on page 43 of the User’s Manual.
If you run applications that require unrestricted 2-way traffic between computer
and the Internet, set computer up as DMZ Host in Advanced > Virtual Servers
> DMZ Host. Refer to Chapter 4 – NAT DMZ Host on page 45 of the User’s Manual.
Caution – any DMZ host computers are no longer protected by the firewall.
You can restrict Internet services to some computers on your network by setting
up IP Filtering. Refer to Chapter 4 – Filtering by IP address on page 47 of the
User’s Manual.
IP extension bridging
In IP Extension Mode the ADSL router resembles a modem. Firewall protection
and Internet sharing are not available. The router becomes a bridge between
WAN & LAN. A computer or network device connected behind it receives a public
WAN IP directly. This arrangement is suitable for certain applications that require
a computer or network device to receive a public IP.