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Rule Type section – select “ Port” and click “ Next”.

There are five steps to open a port and accept incoming connections with the wizard:įor this example, we will open TCP port 20002 on servers that are running the Parallels RAS Publishing Agents role:

Click on Inbound Rules on the left of the MMC (Figure 3), and then on New Rule on the Right of the MMC (Figure 4).

Click Start > Administrative Tools > Windows Firewall with Advanced Security.

To open a port in the firewall using the GUI in Windows Server 2008/2012 R2/2016 and Windows Server 2019, follow the steps below: Opening Ports on the Windows Server Firewall Using GUI There are three different ways to open ports in Windows Server 2008/2012 R2/2016 and Windows Server 2019. These must be configured in the “Inbound Rules,” as explained below. The Windows Firewall configuration is already set to allow all outgoing connections therefore, only ports for incoming connections should be opened.

Outbound connections that do not match a rule are allowed.

Inbound connections that do not match a rule are blocked.

The default configuration has the following rules:

The Windows Firewall is enabled by default on all profiles on a Windows Server operating system. Start your free Parallels RAS 30-day trial today! Default Windows Server Firewall Configuration If Server A is connecting to Server B, it will show “A > B.” Therefore, you should open the following ports for the Parallels RAS components to work:įor a detailed and complete list of all the ports that the Parallels RAS components use to communicate, please refer to the Port Reference section in the Parallels Remote Application Server Administrator’s Guide. Note: In Figure 1, the “>” implies direction. The figure below shows the most common ports used by the Parallels RAS component to communicate when running on different machines:

List of TCP and UDP Ports Used by Parallels RAS To use Parallels RAS on Windows Server 2008 R2 up to Windows Server 2019 with Windows Firewall enabled, several ports must be opened for the Parallels RAS components to communicate.