How would I be able to do this? I've looked around the forums and it seems like I have to do something with iptables, but I'm not sure what.

bump

iptables -A INPUT -p tcp --dport 21 -j ACCEPT

Hmmm ... that's weird. I put that in but I still can't connect to the ftp server. I'm running ProFTPD on it and when I try to access it on my laptop, it acts as if it doesn't even exist. It can't even connect to itself. I run ftp on it while proftpd is running and type "open 192.168.1.103" (on a router) and it says "500 Sorry, no server available to handle request on 192.168.1.103." Arrr, I don't get it. The configuration is valid and it's set to run on port 21! Dang. What's going on? No other services are using port 21 I believe. I checked it and nothing on 21 showed up.

u may costumize redhat security level.
type:

setup

and choose firewall
choose costum. and u can easyly open needed ports.

Oh beautiful! Thank you maxut, that setup program is wonderful. Got my problem fixed right away.

your welcome. i am happy for u

Sorry to bring up an old post, but it takes off from the end of thread. When I run setup and configure stuff, it works, cool, but when I restart, everything is set back to what it used to be. Is there a command I should run to permanently set the settings or something? Thanks!

actually setup tools save configrations. there must be another script which works on startup.
check /etc/rc.d/rc.local file.

Thinking that the settings have been restored is just my prediction though, I could be wrong ... when I run setup and go to the network settings, it appears to be at default. Buuuut, this might just be the way it works, not necessarily meaning that the settings have been restored. Is that it?