Peter Farrow wrote: > You might also find this useful.... > > http://www.netfilter.org/documentation/HOWTO/NAT-HOWTO-6.html > > Thanks for all the links, although I don't think they are what I'm after. What I'm trying to do is setup something which ( I guess) is something similar to that which an ISP may have. For example ISP External Interface = 55.20.0.2 / 255.255.0.0 Client 1 external interface = 56.1.1.2 / 255.255.255.0 Client 2 external interface = 56.1.2.2 / 255.255.255.0 Each of the clients are running a server on 56.1.x.4 which needs to have a public IP (e.g. an SSL web server) therefore NAT of any kind cannot be used. The ISP central router is responsible for directing the packets at the correct client router with I guess some form of routing table (but I haven't got that far in my studyies yet). Hope this helps to clarify. Regards Lee