The protocol used by Remote Desktop Gateway (RD Gateway) is typically RPC (Remote Procedure Call) over HTTP or HTTPS. RD Gateway acts as a gateway server that enables authorized remote users to connect to internal network resources such as Remote Desktop (RDP) servers securely over the Internet. It encapsulates RDP traffic within HTTP or HTTPS packets, allowing RDP sessions to traverse firewalls and proxies that might block direct RDP traffic.
Remote Desktop Gateway (RD Gateway) primarily uses the Remote Desktop Protocol (RDP) for establishing remote desktop connections between clients and servers. RDP is a proprietary protocol developed by Microsoft that facilitates graphical desktop sharing and remote control over a network connection. RD Gateway enhances RDP by providing secure remote access through a single gateway server, utilizing encryption and authentication mechanisms to protect data during transmission.
RDP (Remote Desktop Protocol) uses TCP (Transmission Control Protocol) as its transport protocol and typically operates over port 3389. TCP ensures reliable delivery of RDP packets between the client and server, maintaining the integrity and order of data transmissions essential for remote desktop sessions. Port 3389 is commonly associated with RDP traffic and must be open and accessible in firewalls and network configurations to allow remote desktop connections to RDP servers.
The default port used by Remote Desktop (RDP) is 3389 TCP. However, Remote Desktop Gateway (RD Gateway) uses port 443 TCP by default for encrypted communication over HTTPS. This allows RD Gateway to leverage SSL/TLS encryption for secure remote desktop connections, utilizing the same port commonly used for HTTPS web traffic. Port 443 ensures compatibility with network environments where outbound traffic is restricted to standard web ports, enabling RD Gateway to bypass firewalls and proxies more easily.
To use Remote Desktop (RDP) via a gateway, you typically configure the Remote Desktop client software to connect through a Remote Desktop Gateway (RD Gateway). The RD Gateway server acts as an intermediary that handles remote desktop connections from external clients and forwards them securely to internal Remote Desktop servers. To set up and use RD Gateway for remote desktop access, you need to specify the RD Gateway server’s address in the Remote Desktop client settings and ensure proper configuration of network and security settings to allow remote access through the gateway.