[Mavrick4283]

@chewgum first of all you would have to do iptables -L and post your full list so we would be able to tell you if any rules were causeing you FTP server not to be connected to on the local network. If you are trying localhost and it is not working then i am guessing you are droping all local connections or you do not have the ftp server configured correctly.

These thread may help you lock down your linux install tho.

As given above. http://forums.alliedmods.net/showthread.php?t=151551

Just stuff you should be doing. https://forums.alliedmods.net/showthread.php?t=166037

And the firewall commands // how to https://forums.alliedmods.net/showthread.php?t=165560