Disable the default firewall
By default, the iptables firewall on CentOS and Red Hat is often configured to block the ports you mentioned. Log into the shell as root and run the following commands:
Code:
# iptables-save > iptables_rules
# /etc/rc.d/init.d/iptables stop
Try to access the WebHost Manager. If you are successful, then run the following command:
Code:
# system-config-securitylevel-tui
Select "Disabled" as the security level. You will probably want to configure the iptables firewall in the future, but this will let you configure your server without being blocked by firewall rules.
If this does not help, then it is possible that your service provider's network is blocking those ports from outside, and you would need to contact them for assistance.