OK, thank you very much for your help. John R Pierce wrote: > Sobari Tanuwijaya wrote: >> Where should I put this? After the command Barry said for before? > > it doesn't matter, its a rule in a different chain > > I recommend you read up on iptables and firewall rules to understand how > it all works before attempting to apply any rule. > > good stuff here > http://www.netfilter.org/documentation/ > > the ip masquerade HOWTO lives here > http://tldp.org/HOWTO/html_single/IP-Masquerade-HOWTO/ > its a -little- out of date, but still quite applicable. > > these additional rules should be added in a manner compatible with your > existing firewall rules... if you're using one of the common rule > generator scripts (lokkit, shorewall, etc) it may well already have its > own method for enabling rules like this, that would be preferable.