Hi All, I have a problem with configuring iptables. I have the following servers setup in a cloud environment: Server #1 eth0 IP: 109.123.94.15 GW: 109.123.94.1 eth0:1 IP: 10.0.2.139 Route: Destination Gateway Genmask Flags Metric Ref Use Iface 10.0.2.0 * 255.255.255.0 U 0 0 0 eth0 109.123.94.0 * 255.255.255.0 U 0 0 0 eth0 default gw64-fastest.uk 0.0.0.0 UG 0 0 0 eth Server #2 eth0 IP: 109.123.98.115 GW: 109.123.98.1 eth0:1 IP: 10.0.2.191 Route: Destination Gateway Genmask Flags Metric Ref Use Iface 10.0.2.0 * 255.255.255.0 U 0 0 0 eth0 109.123.98.0 * 255.255.255.0 U 0 0 0 eth0 default gw64-fastest.uk 0.0.0.0 UG 0 0 0 eth As this setup is residing in a cloud environment, it has a defined set of route which I cannot change and I cannot add another network adapter (eg. eth1). Also whenever I added a gateway to the eth0:1 of Server #2, the server is not stable and will refuse connections after a while. What I want to do here is: 1. setup iptables in Server #1 to act as the gateway for Server #2. 2. setup iptables in Server #2 to block all port except SSH and internally to route all traffic to exit via Server #1. Can anyone show me what I need to put into the iptables rules?
