Hello Tom It is quite simple. I've got a multihomed ISA Server 2004, they are configured this way: NIC 1: External (Connected to my router) Bound to several 200.x.x.x IPs NIC 2: Internal - Uses Private Addressing (172.16.0.1/22) NIC 3: DMZ - Uses Private Addressing (192.168.15.1/27) The DMZ and the External Network have a NAT relationship. I've got a SSH server in my DMZ network and that's the one I needed to publish, that server also has a public IP for itself which is bound to NIC 1. What I did, following Microsoft advice, was to create a route relationship between the SSH server and the external network, then I just publish the server listening on port 22 inbound, and that was all. Hope it is clear enough. Please ask anything you'd like to clarify, I'd also like to hear a clear explanation of how on earth this can work, as it amazingly does. Regards, Wilmar