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CompTIA

220-801 · Question #1004

If a technician is trying to remote into a computer through a firewall, which of the following ports, by default, MUST be forwarded?

The correct answer is D. 3389. Port 3389 is the default port for Remote Desktop Protocol (RDP), which is the standard Windows remote desktop service. To allow RDP connections through a firewall, port 3389 (TCP) must be forwarded to the target machine. The other ports are for FTP (21), SMTP email (25), and…

Networking

Question

If a technician is trying to remote into a computer through a firewall, which of the following ports, by default, MUST be forwarded?

Options

  • A21
  • B25
  • C110
  • D3389

How the community answered

(49 responses)
  • A
    2% (1)
  • B
    4% (2)
  • C
    2% (1)
  • D
    92% (45)

Explanation

Port 3389 is the default port for Remote Desktop Protocol (RDP), which is the standard Windows remote desktop service. To allow RDP connections through a firewall, port 3389 (TCP) must be forwarded to the target machine. The other ports are for FTP (21), SMTP email (25), and POP3 email (110).

Topics

#RDP#port 3389#remote access#firewall ports

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