3com 3C840 Guía Del Usuario
Configuring Static PAT Port Entries
6-3
Press the Modify button to set the address.
Configuring Static
PAT Port Entries
PAT Port Entries
Press the Static Transmission Control Protocol (TCP) or Static User
Data Protocol (UDP) button to access the static port tables.
Data 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 IP
address / TCP port pairs.
(above). Using this table, you can map public TCP ports to private IP
address / TCP port pairs.
This is useful for controlling access to the LAN by remote users. For
example, an entry containing public TCP port 80, the IP address of a
web server on your LAN, and the private TCP port 80 allows controlled
access to the web server but not the rest of your LAN. (For a list of
assigned port numbers, see RFC-1700, Assigned Numbers document
which is available from the Internet.)
example, an entry containing public TCP port 80, the IP address of a
web server on your LAN, and the private TCP port 80 allows controlled
access to the web server but not the rest of your LAN. (For a list of
assigned port numbers, see RFC-1700, Assigned Numbers document
which 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 IP
address / UDP port pairs. This is useful for controlling access to the
LAN by remote users. (For a list of assigned port numbers, see
RFC-1700, Assigned Numbers document which is available from the
Internet.)
(above). Using this table, you can map public UDP ports to private IP
address / UDP port pairs. This is useful for controlling access to the
LAN by remote users. (For a list of assigned port numbers, see
RFC-1700, Assigned Numbers document which is available from the
Internet.)
840ug.book Page 3 Friday, July 7, 2000 2:23 PM