FW: [sclug] Firewalls

[James Fidell]

Quoting Tom Dawes-Gamble (tmdg at hp.com):

> Yes,  but NAT sould only change the envelope part of the packet and not the
> contents.

Well, that kind of depends what you define as "NAT" :)

Where a specific protocol puts it's IP address in the payload of a packet,
there are often extensions to the pure header translation part of NAT
that recognise those packets and re-write the address inside the payload
too.

James