Firewall rules for Synergy in iptables

For a while I've been turning off iptables to let my secondary machine connect as synergy client to let me use one keyboard and mouse across both machines.  Finally today I decided to set up the rules properly to do it, so here's how: Create a new rule file in the iptables chain directory for incoming rules: sudo vi /etc/iptables.d/filter/INPUT/53-custom-synergys.rule with the following lines in it: Allows incoming flows for Synergy. -A INPUT -p tcp -m tcp --dport 24800 -j ACCEPT -A INPUT -p udp -m udp --dport 24800 -j ACCEPT Restart iptables for the rules to take effect sudo /etc/init.d/iptables restart