I have RedHat 7.2 installed with 2.4.18 Kernel build with iptables support. I am trying to setup a firewall using iptables (getting away from ipchains) but seem to have a few problems.

It appears that the default policy of DROP overrules any exceptions I put in. For example, if I set the default policy for both input and output to drop then enter the following iptables commands.

iptables -A INPUT -i eth0 -p tcp -d 192.168.1.253 --dport 22 -j ACCEPT
iptables -A OUTPUT -o eth0 -p tcp -s 192.168.1.253 --sport 22 -j ACCEPT

I cannot ssh to the server (192.168.1.253)after entering these rules. sshd is running and the server is listening on port 22. Any ideas?

dAggressor
--Anxiously awaits some light shed on this for me