Firewalls and routers provide computers and servers with built-in protection against unwanted security intrusions from outside traffic on the Internet. To run services for software and applications, such as the Plesk Panel, you must open ports on the firewall and router. This allows legitimate connections to your Web hosting server from customers who use the Plesk Panel, while keeping other ports closed off and protected from unwanted connections. You may need to manually change settings on your router and firewall to open the proper ports for Plesk.
Plesk Panel is an application that serves as the centerpiece of an Internet website hosting service provider. The Web hosting server runs the Plesk Panel and allows customers to connect to their own dashboard on the server through Plesk. Once connected, customers can design websites, manage files and install new Internet applications on their pages. The Plesk Panel also allows the website host to manage customers, assign FTP accounts, enable development software and manage account billing.
About Plesk Ports
Plesk requires several different open ports, depending on the type of services you provide on the Web hosting server. For example, to allow FTP transfers, you must open ports 20 and 21. For website hosting services, you must open port 80. If you want to provide POP3 and SMTP mail services, you must open ports 25 and 110. The KB Parallels help files include a page that lists all ports and the services that correspond to each number. Determine which services you want to use to know what ports you need to open.
Opening Router Ports
Some routers provide a built-in firewall as an extra layer of protection. If you use a router on your server’s network, ensure that you open the ports on the router as well as the computer firewall. You can access your router’s administrator dashboard by typing the router’s IP address into any Internet browser address bar, on a computer that is connected to the router. From there, access the port forwarding area of the dashboard and manually type in the port forwarding rule for each Plesk port number you wish to open.
Opening Firewall Ports
The method for opening ports on the computer firewall varies depending on the type of firewall installed on your server. Firewall software allows you to configure rules and exceptions that you can use to manually open port numbers based on the services you use with Plesk. For example, if you use the built-in Windows Firewall, access the Firewall settings form the Security section of your computer and select “Allow a program through Windows Firewall.” Here you can “Add a Port” and configure the Plesk port numbers, instructing the firewall to allow traffic through for the specific services.