A network administrator is configuring a firewall to allow remote access to a Windows Server for administrative purposes. Which port number must be permitted to enable a standard Remote Desktop Protocol (RDP) connection?
389
3389
22
443
The correct port for Remote Desktop Protocol (RDP) is 3389. RDP primarily uses TCP on port 3389 to provide a user with a graphical interface to connect to another computer over a network. While UDP on the same port can be used for performance enhancements since RDP 8.0, TCP is the fundamental protocol required for the connection. Port 22 is for Secure Shell (SSH), port 443 is for HTTPS, and port 389 is for Lightweight Directory Access Protocol (LDAP). To allow a standard RDP connection, the firewall must be configured to permit traffic on TCP port 3389.
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