Remote Desktop Protocol (RDP) primarily uses TCP (Transmission Control Protocol) for its transport layer protocol, specifically on port 3389. TCP ensures reliable and ordered delivery of data between the RDP client (local machine) and RDP server (remote machine), crucial for maintaining the integrity and responsiveness of remote desktop sessions.
UDP (User Datagram Protocol) is not typically used as the primary transport protocol for Remote Desktop. UDP is a connectionless protocol that prioritizes low-latency and best-effort delivery over reliability. While some aspects of RDP may utilize UDP for specific functionalities or optimizations, such as multimedia streaming or voice-over-IP (VoIP) within the remote desktop session, UDP is not the standard transport protocol for RDP sessions.
RDP (Remote Desktop Protocol) operates over TCP port 3389 by default. This port number is standardized for RDP communication between the client and server, ensuring consistent and reliable connectivity for remote desktop sessions across different network environments. TCP’s reliability and connection-oriented nature make it suitable for applications like remote desktop, where maintaining session integrity and responsiveness is critical.
There is no standard UDP port specifically designated for Remote Desktop Services (RDS). As mentioned, RDS primarily relies on TCP port 3389 for its communication. UDP may be used in conjunction with TCP for specific RDS functionalities that benefit from UDP’s characteristics, such as real-time multimedia streaming or interactive applications within the remote desktop environment.
“Remote UDP” could refer to any application or service that utilizes UDP for remote communication purposes. Unlike TCP, UDP does not establish a connection before transmitting data and does not guarantee delivery or order of packets. Applications using remote UDP may include real-time streaming, online gaming, VoIP, and multimedia applications where low-latency transmission is prioritized over data reliability.