A network administrator is configuring a firewall to secure a network. Which port should be closed to prevent unauthorized remote desktop access, considering the network does not utilize this feature?
3389
443
22
80
Port 3389 is the default port used by Remote Desktop Protocol (RDP), which is used for remote desktop access. Closing this port on the firewall would prevent unauthorized remote desktop connections if RDP is not used by the network. The other ports serve different purposes: port 22 is used by Secure Shell (SSH) for secure access, port 80 is used for HTTP web traffic, and port 443 is used for HTTPS secure web traffic. They are unrelated to remote desktop services.
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