NETGEAR CVG834G, Reference Manual

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Wireless Cable Voice Gateway Model CVG834G Reference Manual
Protecting Your Network 3-13
v2.0, November 2007
2. In the Trigger Range field, enter the outbound ports that will be monitored for activity. This
will be the “trigger.”
3. In the Target Range field, enter the inbound ports that should be forwarded when the trigger
occurs.
4. Select the appropriate protocol: TCP, UDP or Both.
5. Select the Enable check box
6. Click Apply .
There are two ways to clear a Port Triggering rule:
• Clear the Enable check box to temporarily disable the rule.
• Select the rule, and then click Delete .
Setting Up a DMZ Host
The Default DMZ Server feature is helpful when using some online games and video conferencing
applications that are incompatible with NAT. The gateway is programmed to recognize some of
these applications and to work properly with them, but there are other applications that may not
function well. In some cases, one local PC can run the application properly if that PC’s IP address
is entered as the Default DMZ Host.
Incoming traffic from the Internet is normally discarded by the gateway unless the traffic is a
response to one of your local computers or a service that you have configured in the Port
Forwarding or Port Triggering screen. Instead of discarding this traffic, you can have it forwarded
to one computer on your network. This computer is called the default DMZ host.
Note: For security, you should avoid using the Default DMZ Server feature. When a
computer is designated as the default DMZ server, it loses much of the protection
of the firewall, and is exposed to many exploits from the Internet. If compromised,
the computer can be used to attack your network.