What allows endpoints behind a NAT to discover the paths through which they will pass media?

The correct answer is D. ICE. ICE (Interactive Connectivity Establishment), defined in RFC 5245/8445, is the framework that enables endpoints behind NAT devices to discover all possible candidate media paths (local addresses, server-reflexive addresses via STUN, and relayed addresses via TURN). ICE gathers…

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Question

Options

ARTP
BTLS
CSNMP
DICE

How the community answered

(60 responses)

A
2% (1)
B
5% (3)
C
2% (1)
D
92% (55)

Explanation

ICE (Interactive Connectivity Establishment), defined in RFC 5245/8445, is the framework that enables endpoints behind NAT devices to discover all possible candidate media paths (local addresses, server-reflexive addresses via STUN, and relayed addresses via TURN). ICE gathers these candidates, exchanges them with the remote peer via the signaling channel (e.g., SDP offer/answer), and then systematically tests each candidate pair to find a working path for media. RTP (A) is the media transport protocol itself but provides no NAT traversal discovery. TLS (B) is for signaling encryption. SNMP (C) is a network management protocol with no role in media path discovery.

Topics

#NAT Traversal#ICE Protocol#Media Path Discovery#Collaboration Endpoints

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