Can firewall and ssh co-exist in RedHat 9.0?
 

Hi,

In redHat 9.0, When I use ssh to connect another server, it seems the firewall must be stopped.
My question is--
Is it possible to use ssh without closing firewall?How?
Is the firewall still needed or not if ssh connection is used?



Thanks.

You need to tell to the firewall to open the port 22. Sure red hat has a GUI for that. Anyway the command to do that is:

iptables -A INPUT -i eth0 -m tcp -p tcp -dport 22 -j ACCEPT

Please note rebooting clears the firewall config, so I recommend you to use the GUI.

place this rule at the top of the chain

iptables -I INPUT 1 -i eth0 -m tcp -p tcp -dport 22 -j ACCEPT

Slight syntax errors in the above rules that will keep them from loading. Should be --dport not -dport, like this:

iptables -I INPUT 1 -i eth0 -m tcp -p tcp --dport 22 -j ACCEPT