On Sun, 2003-06-22 at 05:48, cable linux wrote: > Q1. How can i implement below scanerio through > iptables? [snip] By reading http://www.netfilter.org/documentation/HOWTO//packet-filtering-HOWTO.html and specifically http://www.netfilter.org/documentation/HOWTO//packet-filtering-HOWTO-10.html > Q2. how can i implement below scanerio? This looks very much like a school assignment, shouldn't you find this out by yourself? Check out http://www.linuxguruz.com/iptables/, http://www.google.com/ and read the list archives. Bjorn