Hi Jimmy, Can you be more specific and tell exactly what rules you add how to which interface, and what exactly happens then? Which packets stop going which way that they previously took and how do you meadure it? Henning <blockquote type="cite">Am 30.07.2010 09:24 schrieb "Jimmy Stewpot" <<a href="mailto:mailers@oranged.to">mailers@oranged.to</a>>: Hello, I have a working environment where I have the following configuration. eth0 is in the bridge br0. I then have a KVM virtual machine running perfectly. I now want to configure the host server (With br0) to have a set of iptables rules. Unfortunately every time I add any rules to the interface br0/eth0 i loose all connectivity despite having a permit/any/any rule for port 22. Can anyone provide any insight into why that would be the case? Regards, Jimmy. -- ubuntu-server mailing list <a href="mailto:ubuntu-server@lists.ubuntu.com">ubuntu-server@lists.ubuntu.com</a> <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-server" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-server</a> More info: <a href="https://wiki.ubuntu.com/ServerTeam" target="_blank">https://wiki.ubuntu.com/ServerTeam</a> </blockquote>