Configuring Static PAT Port Entries 6-3Press the Modify button to set the address.Configuring StaticPAT Port EntriesPress the Static Transmission Control Protocol (TCP) or Static UserData Protocol (UDP) button to access the static port tables. Static TCP — Press this button to access the static PAT TCP table(above). Using this table, you can map public TCP ports to private IPaddress / TCP port pairs.This is useful for controlling access to the LAN by remote users. Forexample, an entry containing public TCP port 80, the IP address of aweb server on your LAN, and the private TCP port 80 allows controlledaccess to the web server but not the rest of your LAN. (For a list ofassigned port numbers, see RFC-1700, Assigned Numbers documentwhich is available from the Internet.) Static UDP — Press this button to access the static PAT UDP table(above). Using this table, you can map public UDP ports to private IPaddress / UDP port pairs. This is useful for controlling access to theLAN by remote users. (For a list of assigned port numbers, seeRFC-1700, Assigned Numbers document which is available from theInternet.)840ug.book Page 3 Friday, July 7, 2000 2:23 PM
