Unable to access Control Panel on newly provisioned VPS

CentOS 7 by default comes configured with a built in firewall: firewalld. This is great for general security, but not so hot when you want to access a control panel, such as Plesk running on port 8443. Connect via SSH and run the following commands to fix this. These commands open the ports for Plesk (8443) and its update daemon (8447):

systemctl restart firewalld 
firewall-cmd --zone=public --add-port=8443/tcp && firewall-cmd --zone=public --add-port=8443/tcp --permanent
firewall-cmd --zone=public --add-port=8447/tcp && firewall-cmd --zone=public --add-port=8447/tcp --permanent


If you're using a panel other than Plesk, like cPanel, be sure to look up the correct ports to open for that panel.

If you wish to use your control panel's firewall, you can enable it now. If not, we suggest using firewalld and disabling iptables start-up rules:

systemctl stop iptables
systemctl mask iptables
systemctl enable firewalld.service
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