Question: What is the primary benefit of using TCP/TLS on port 443 (HTTPS) or TCP on port 80 (HTTP) for communication between an IMS client and a TURN server during firewall traversal?
Option 1: Reduced overhead in TLS setup, improving overall connection speed.
Option 2: Enhanced security through encryption, protecting against unauthorized access.
Option 3: Increased likelihood of the communication being allowed through firewalls, as it appears as HTTP(S) traffic.
Option 4: Simplified authentication process for IMS clients with TURN servers.
Explanation: The correct answer is Option 3 because using TCP/TLS on port 443 (HTTPS) or TCP on port 80 (HTTP) makes the communication between the IMS client and the TURN server appear as standard HTTP(S) traffic to firewalls. This significantly increases the likelihood of the communication being permitted through the firewall, which is crucial for successful firewall traversal in IMS media plane scenarios. While security (Option 2) and reduced overhead (Option 1) are important considerations, they are not the primary benefits in this specific context. Option 4 is incorrect as the authentication process complexity is not directly addressed by using these ports.