Here's my iptables list: Here's what I ran: Code (Text): sudo iptables -A bungee --src 126.96.36.199 -j ACCEPT -- so on -- sudo iptables -I INPUT -m tcp -p tcp --dport 25500:25700 -j bungee sudo /etc/init.d/iptables-persistent save It looks like it should work, right? But I can still connect to a server on port 25571. Any suggestions? I got the params from this guide. Server is Ubuntu Server 12.04. Tried it on a CentOS 6 server (I know), didn't work either.