iptables configuration issue

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http://forums.fedoraforum.org – I want to configure remote desktop TigerVNC following the guide: setting up vncserver on Fedora 16 | zeusville the author said: Code: let’s update iptables: sudo vi /etc/sysconfig/iptables Add this to the file: -A INPUT -p tcp -m state --state NEW -m tcp --dport 5903 -j ACCEPT Save the file, then restart iptables and verify that the port is active. sudo systemctl restart iptables.service sudo iptables --list | grep 5903 ACCEPT    tcp  --  anywhere            anywhere            stat (HowTos)