3Com 3CRADSL72, User Manual

Page: 67 / 104

Utilities 67
have a single IP address and you turn NAT off, the computers on your
network will not be able to access the Internet. Other problems may also
occur. Turning off NAT will not affect your firewall functions.
Universal Plug and
Play
Universal Plug and Play is a technology that offer seamless operation of
voice messaging, video messaging, games, and other applications that
are Universal Plug and Play compliant. Some applications require the
Router's firewall to be configured in a specific way to operate properly.
This usually requires opening TCP and UDP ports and in some instances
setting trigger ports. An application that is Universal Plug and Play
compliant has the ability to communicate with the Router, basically
"telling" the Router which way it needs the firewall configured. The
Router ships with the Universal Plug and Play feature disabled. If you are
using any applications that are Universal Plug and Play compliant, and
wish to take advantage of the Universal Plug and Play features, you can
enable this feature. Simply select
Enable in the UPnP Enabling section of
the Utilities page. Click Apply Changes to save the change.