Ann, a technician, is attempting to establish a remote terminal session to an end user's computer using Kerberos authentication, but she cannot connect to the destination machine. Which of the followi

The correct answer is D. 3389. Port 3389 is the default port for RDP (Remote Desktop Protocol), which is used to establish remote terminal (graphical desktop) sessions on Windows systems and supports Kerberos authentication in domain environments. Port 22 (A) is SSH (non-Kerberos, Linux-focused). Port 139 (B)

Security architecture

Question

Ann, a technician, is attempting to establish a remote terminal session to an end user's computer using Kerberos authentication, but she cannot connect to the destination machine. Which of the following default ports should Ann ensure is open?

Options

A22
B139
C443
D3389

How the community answered

(50 responses)

A
4% (2)
B
2% (1)
C
2% (1)
D
92% (46)

Explanation

Port 3389 is the default port for RDP (Remote Desktop Protocol), which is used to establish remote terminal (graphical desktop) sessions on Windows systems and supports Kerberos authentication in domain environments. Port 22 (A) is SSH (non-Kerberos, Linux-focused). Port 139 (B) is NetBIOS/SMB for file sharing. Port 443 (C) is HTTPS for web traffic. The context of a remote terminal session to a Windows end-user computer points directly to RDP on port 3389.

Topics

#RDP#port 3389#Kerberos#remote desktop

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