> > A----------B---------C > | > | > Workstation (public) > > > (A) runs the IP filter with NAT and has public address > and B and C have private IP addresses. > > Workstation wants send a packet (udp/tcp) to B. It > does this by sending a packet to A with a preallocated > port nunber for B. Does A map source IP (workstation > address) and port numbers in the packet before sending > it to B, since B does not know how to reach the > workstation. If so, does this happen automatically or > do I need configure something in the rules file? > > Any help is greatly appreciated. >
In a typical nat configuration, B will see the packet with the original source IP and port of the workstation (W). As far as B routing back to W... B should have the internal address of A as it's default gateway. --daxbert
