[alvaroag]

Use shorewall or firehol instead of spare iptables commands. It's much more efficient and secure.

Also, ensure your app is listening on "0.0.0.0" instead of "127.0.0.1".

[helldesigin]

Hi guys,

I need these two ports open: 3724 and 8085 on my Ubuntu VPS. I've used these commands in the console:

iptables -A INPUT -p tcp --dport 3724 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables -A INPUT -p udp --dport 3724 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables -A INPUT -p tcp --dport 8085 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables -A INPUT -p udp --dport 8085 -m state --state NEW,ESTABLISHED -j ACCEPT

also

sudo iptables -I INPUT -p tcp -s 0.0.0.0/0 --dport 8085  -j ACCEPT

but it seems the ports are still closed...

Do you have an idea how to open them? Thank you.