Hi. I'm using shorewall 4.4.11 (debian 6) on a host with only 1 interface. This interface have a second IP with netmask 255.255.255.255. I try to use this second ip for outgoing traffic when destination port is 80. I can't figure how to do this. It seems than I should use "masq" file but it seems to be for system with 2 distinct networks. But is it possible to route local traffic through a specific IP ? With iptables, it should be something like -t nat -A POSTROUTING -o eth0 -p tcp -dport 80 -j SNAT --to-source xxx Thanks for any help ! -- Mike ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs