Description
3389 port is used for Port 3389 is used for Remote Desktop Protocol (RDP) connections that allow remote access to Windows machines. Keeping port 3389 open exposes systems to attacks, so it should be closed by default and only selectively opened when needed for remote access. Restricting access to port 3389 is crucial..
3389 vs 3311 You should open TCP and UDP 3389 (unless you specified a custom port). While the accepted answer (only TCP 3389) used to be correct at the time, it is no longer up to date. In 2012 Microsoft introduced UDP transport of RDP. Depending on your network this can drastically improve performance of your RDP session. See this link by Microsoft for a much more detailed explanation: https ...
3389 port number used for What is Port 3389? Port 3389 is the default port used by Microsoft’s Remote Desktop Protocol (RDP). RDP allows users to connect remotely to another computer over a network connection. It is commonly used in enterprise environments, enabling system administrators to manage servers and workstations without being physically present. While this functionality provides convenience, it also opens ...