I've tried a number of different PREROUTING and POSTROUTING rules and can't seem to make this work. I have a system with a single nic (eth0). While I'm on the system via a shell I would like to connect to 127.0.0.1:6000 and get seemlessly translated to 207.156.7.15:80. I tried the following without success: iptables -t nat -A PREROUTING -p tcp -d 127.0.0.1 -i lo --dport 6000 -j DNAT--to-destination 207.156.7.15:80 iptables -t nat -A POSTROUTING -p tcp -d 207.156.7.15 -o eth0 --dport 80 -j SNAT --to-source 127.0.0.1