User`s guide

IP Address Management
Network Address Translation (NAT) for a LAN
3-32 Preliminary January 30, 1998 Pipeline User’s Guide
Disabling routing for specific ports
To disable routing of incoming packets from a remote network for specific TCP
or UDP ports:
1
Open the Ethernet > NAT > NAT > Static Mapping menu.
2
Open a Static Mapping nn menu, where nn is a number between 01 and 10.
The parameters in each Static Mapping nn menu specify the routing for
incoming packets sent to a particular TCP or UDP port.
3
Set the Valid parameter to No.
This disables routing for the port specified by the Dst Port# and Protocol
parameters in this menu.
4
Exit and save the profile.
Repeat steps 2 through 4 to disable routing for any additional ports.
5
Exit and save the profile.
The changes take effect the next time a connection is made for the NAT Profile.
To make the changes immediately, close the connection specified by the Profile
parameter and then reopen it.
Well-known ports
TCP and UDP ports numbered 0-1023 are called Well Known Ports. These ports,
which include the ports for the most common services available on the Internet,
are assigned by the Internet Assigned Numbers Authority (IANA). In almost all
cases, the TCP and UDP port numbers for a service are the same.
You can obtain current lists of Well Known Ports and Registered Ports (ports in
the range 1024-4915 that have been registered with the IANA) via FTP from
ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers