Cpanel/ Whm not working after fresh installation


Well-Known Member
Jun 18, 2004
cPanel Access Level
DataCenter Provider
CentOS has default iptables (firewall) rules that block access to cPanel ports out of the box. You can flush them with `iptables -F` and also remove them from /etc/sysconfig/iptables to prevent them from coming back on a system reboot or service restart.


Jun 24, 2005
What garrettp told you should take care of all that unless you have another firewall script pre-installed somewhere that is resetting iptables such as APF, CSF, or some other (a couple of data centers have their own proprietary scripts).

The "iptables -F" temporarily flushes iptables

The "rm -f -- /etc/sysconfig/iptables" removes the entries permanently

Don't forget to restart "service iptables restart ; service cpanel restart"

If you reboot and get the blocks back then you got something else going on and I would say you have some other firewall script active or you are on an old traditional VPS server (Eeeewww! :rolleyes:) and they got you setup to load a standard image at each boot. In the later case, your only recourse outside of moving would be to setup a script to auto make the changes you need after each reboot.

You can always disable iptables temporarily till you finish getting Cpanel installed which incidentally is a whole lot more than just simply running which would be only about 1% of what all you need to do to get Cpanel up and running properly.

Regarding what I just said:
service iptables stop
chkconfig iptables off
(NOTE: I absolutely do not recommend that be used for anything permanent!)