Timothy Murphy wrote:
I'm running CentOS-6 on an HP MicroServer (since this morning) and I'd like to open an non-standard port, for use on a laptop attached to the internet through the server.
Do I have to explicitly add an iptables rule? If so, and I want to open (say) udp port 500 , what command should I give?
I've always used shorewall in the past, and will probably do so now if the default firewall is difficult to use. But I thought I would try it first as an experiment.
My recollection is that in old versions of CentOS one could non-standard ports through system-config-firewall ; but it seems that now this can only be used for standard ports;
I looked at http://wiki.centos.org/HowTos/Network/IPTables but didn't find it very enlightening.
Any advice or suggestions gratefully received.
Use System -> Administration -> Firewall from GUI. Or "/usr/bin/system-config-firewall" from SSH/console TUI.
Ljubomir