Hello all, I am in the process of learning iptables. Progress is slow but steady, however there is one thing that continues to vex me and it may simply be a problem of terminology with regards to finding help. I'm looking to eventually replace a couple of firewall machines with Linux boxes running iptables. For one of the firewalls, the network it protects consists of machines that all have real-world IP addresses. Given the nature of the network and its usage, I am cannot institute NAT on the network. Unfortunately, the difficulty I'm running into is that every tutorial I can find has focused on using NAT. Can someone guide me to the specific rules I need, whether by posting them here or pointing me to a tutorial, in order to provide firewall services for a network consisting purely of publicly addressable IP's? Regards, Robert Kropiewnicki