CompTIA Network+ (N10-007) — Question 596

A security manager asks the network administrator to block VoIP protocols using the default ports on the corporate firewall. Which of the following ports should be blocked to prevent this type of traffic from going outside the company's network? (Choose three.)

Answer options

• A. 67
• B. 68
• C. 161
• D. 636
• E. 1720
• F. 5060
• G. 5061

Correct answer: E, F, G

Explanation

The correct ports to block for VoIP protocols are 1720, 5060, and 5061. Port 1720 is used for H.323 signaling, while ports 5060 and 5061 are utilized for SIP (Session Initiation Protocol). The other options do not pertain to VoIP traffic and therefore do not need to be blocked.