Learn which default port must be open to establish a remote terminal session using Kerberos authentication. Ensure seamless connectivity for technicians and end users.
Table of Contents
Question
Ann, a technician, is attempting to establish a remote terminal session to an end users computer using Kerberos authentication, but she cannot connect to the destination machine. Which of the following default ports should Ann ensure is open?
A. 22
B. 139
C. 443
D. 3389
Answer
D. 3389
Explanation
Remote Desktop Protocol (RDP) uses TCP port 3389.
To establish a remote terminal session using Kerberos authentication, the default port that should be open is 3389. This port is used by the Remote Desktop Protocol (RDP), which allows technicians like Ann to securely connect to and control an end user’s computer remotely.
The other ports mentioned in the options serve different purposes:
- Port 22 is used for Secure Shell (SSH) protocol
- Port 139 is used for NetBIOS Session Service
- Port 443 is used for HTTPS (HTTP over SSL/TLS)
To troubleshoot the issue, Ann should ensure that port 3389 is open on the destination machine and that the necessary firewall rules are configured to allow incoming RDP connections. Additionally, she should verify that the Kerberos authentication is properly set up and that the required domain credentials are valid.
CompTIA SY0-401 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the CompTIA SY0-401 exam and earn CompTIA SY0-401 certification.