Im trying to open a port ("81")
But still I cant find how to open it.
Im running on Ubuntu 11.10 (oneiric)
iptables -A INPUT -p tcp -d 0/0 -s 0/0 --dport 81 -j ACCEPT
But I got this result;
iptables v1.4.10: can't initialize iptables table `filter': Permission denied (you must be root)
Perhaps iptables or your kernel needs to be upgraded.
Any help is welcomed.
PS; Sorry for my bad english.