3Com 3C840 User Manual page 188

C-6 A C: A T T
PPENDIX DDRESS RANSLATION UTORIAL
world. You would select the port numbers based on the type of access
needed. For example, if you had a local WEB server, you would select the
IP address of your server and the port number 80, which is the UDP and
TCP port number used to indicate HTML traffic.
Default PAT Default PAT operates like Dynamic PAT except you may specify a default
private IP address for all traffic whose port numbers are not in the address
translation table. However, this may remove the Firewall. With a default IP
address, all traffic initiated on the WAN and not sent to other private IP
addresses will go to this IP address. In Dynamic and Static PAT, traffic from
the LAN, not the WAN, determines the use of the address translation
table.