Hi, I have a question...do iptables rule need asort of keepalive mechanism in order not to be erased . I am particularly thinking about nat bindings in a voip context...I have found in literature that such mechanism are necessary for many nat devices currently deployed but i couldn't find anything about iptables.... Thanks to anyone who might kindly answer me, regards diego ------------------------------------------------------ Rc Auto? Scopri la convenienza Direct Line. Approffitta dello sconto extra 5+5% entro il 30 Settembre! http://click.libero.it/direct_line2