Configure Special Applications

4. Tto enter that information in the Public Port boxes on the designated line, click Copy to.

Network Address Translation (NAT)

Network Address Translation, or NAT, is automatically enabled when you enable multi-user Internet access or enable the Virtual Server function. NAT provides multiple users with access to the Internet via a single user account, or maps the local address for an IP server (such as Web or FTP) to a public address. This secures your network from direct attack by hackers, and provides more flexible management by allowing you to change internal IP addresses without affecting outside access to your network.

Use the Advanced Setup menu to configure applications that require multiple connections, such as Internet games, video-conferencing, and Internet telephony. These applications may not work when Network Address Translation (NAT) is enabled. If you need to run applications that require multiple connections, use the following screen to specify the additional public ports to be opened for each application.

Figure 3-3. Advanced Setup Special Applications

1.In the Trigger Port box, specify the port normally associated with an application.

2.Select TCP or UDP as the protocol type.

3.In the Public Port box, enter the public ports associated with the trigger port to open them for inbound traffic.

Automatically Entering Port Information

You can have the system automatically enter the most common application ports:

1.Scroll to the bottom of the Advanced Setup Special Applications screen.

2.In the Popular applications box, select the desired application.

3.Click in the box to the right of Copy to and select the line number to which the system will enter that

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