Hello people. This is my first post, please be nice with me :-) I have a little network with 3 computers. 2 workstations, 1 server. the network is 10.166.0.0 server 10.166.0.1 1 workstation 10.166.0.2 and a new one the third 10.166.0.3 server has 2 interfaces. the one is connected with another network ( 10.165.0.0) wirelessly. from the "main" server they assigned me with 2 internet static ips (for 10.166.0.1 and 10.166.0.2). But when I took the third one (10.166.0.3) I wanted to connect it with internet. I did echo 1 > /proc/sys/net/ipv4/ip_dynaddr and the problematic one: iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE thats good! it worked! But the problem is that both 10.166.0.2 and 10.166.0.3 having internet with the server's ip address... I just want 10.166.0.3 to share the same static ip address. I dont know what exactly to do to make only 10.166.0.3 to "share"/masq the same ip with the server. And now I have both 10.166.0.2 and 10.166.0.3 with the same ip, yeap its working but I need the second static ip to 10.166.0.2 and I dont know what to do... Christos Panagiotakis ps: forgive me for my awful english I hope to understand me