Windows RDP server is a powerful tool that allows remote administrators to view and control remote computers. As part of the security features of the protocol, Windows allows you to encrypt traffic between your computer and the remote device. This feature is essential for the secure transfer of information and data. To encrypt data, you must first use an encryption key. To do this, you need to configure the security setting in the server's registry.

To enable RDP connection through VPN concentrators, you need to use RD gateways. This gateway is an extra service that you can add to the Windows RDP server. If you are connecting to an untrusted network, it is better to install an RD-based service. You can then add the RD gateway to your server and connect to your remote computer. If you're using a VPN concentrator, you must set the RD gateway's port to TCP.