[CentOS] Inquiry:iptables ?

John R Pierce pierce at hogranch.com
Sat Oct 31 08:26:12 UTC 2009

hadi motamedi wrote:
> Dear All
> To open a port , I know that I need to go to "System -> Administration 
> -> Security Level and Firewall" -> Other ports and then I can open 
> port-5901 as tcp protocol . Can you please do me favor and let me know 
> how it can be done from the command line (if my CentOS is text-mode 
> installed) ? (perhaps via iptables?)

older versions of RHEL had a lokkit text menu based util for setting 
basic firewall ports. I dunno but it may still be available in current 
versions.  all it actually does is edit that sysconfig/iptables  file 
and restart the iptables service that tony mentions, same as the GUI 
program does.

also, you could make a backup of that file  on a GUI system, add a port, 
then diff the backup and the current iptables file to see exactly what 
the GUI does

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