On Sat, 13 Sep 2003, Luis legar Garcia wrote: > Dear Faheem, > > As longh as I understand the rule: > > iptables -A RH-Lokkit-0-50-INPUT -p tcp -m tcp --syn -j REJECT > > it will reject ALL except INVALID, even 'Established' and 'Related' connections, > which you should allways allow. > To avoid this I'd put just before it something like > > iptables -A RH-Lokkit-0-50-INPUT -p tcp -m state --state RELATED,ESTABLISHED -j ACCEPT > > and maybe the same rule but for UDP packets. > bye, > legar, from Argentina What kinds of problems could I expect to see if these 'Established' and 'Related' connections are not allowed? I have been using the rules I posted for some days now, and have seen no problems yet. Faheem.