STUN protocol

E544009

IETF protocol network protocol

The STUN protocol (Session Traversal Utilities for NAT) is a network protocol that helps devices discover their public IP address and port and determine the type of NAT or firewall they are behind to enable peer-to-peer connectivity.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (2)

Label	Occurrences
STUN	2
STUN protocol canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T5768154 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: STUN protocol
Context triple: [Interactive Connectivity Establishment, relatedTo, STUN protocol]

A. RTCPeerConnection
RTCPeerConnection is a WebRTC API interface that enables real-time audio, video, and data communication between web browsers or devices by managing the underlying peer-to-peer connection.
B. Session Initiation Protocol
Session Initiation Protocol (SIP) is a signaling protocol used to establish, modify, and terminate real-time communication sessions such as voice and video calls over IP networks.
C. NAT and firewall traversal requirements for WebRTC
NAT and firewall traversal requirements for WebRTC are the standardized technical guidelines that ensure WebRTC media and data can reliably pass through network address translators and firewalls in real-world internet deployments.
D. H.323
H.323 is an ITU-T standard that defines protocols for voice, video, and data communication over packet-based networks such as IP.
E. SIP
SIP is the IATA airport code for Simferopol International Airport, the main air gateway to the Crimean Peninsula.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: STUN protocol
Target entity description: The STUN protocol (Session Traversal Utilities for NAT) is a network protocol that helps devices discover their public IP address and port and determine the type of NAT or firewall they are behind to enable peer-to-peer connectivity.

A. RTCPeerConnection
RTCPeerConnection is a WebRTC API interface that enables real-time audio, video, and data communication between web browsers or devices by managing the underlying peer-to-peer connection.
B. Session Initiation Protocol
Session Initiation Protocol (SIP) is a signaling protocol used to establish, modify, and terminate real-time communication sessions such as voice and video calls over IP networks.
C. NAT and firewall traversal requirements for WebRTC
NAT and firewall traversal requirements for WebRTC are the standardized technical guidelines that ensure WebRTC media and data can reliably pass through network address translators and firewalls in real-world internet deployments.
D. H.323
H.323 is an ITU-T standard that defines protocols for voice, video, and data communication over packet-based networks such as IP.
E. SIP
SIP is the IATA airport code for Simferopol International Airport, the main air gateway to the Crimean Peninsula.
F. None of above. chosen

Statements (54)

Predicate	Object
instanceOf	IETF protocol ⓘ network protocol ⓘ
abbreviation	STUN ⓘ
canUsePort	TCP port 5349 ⓘ UDP port 5349 ⓘ
category	NAT traversal protocol ⓘ
clientRole	sends binding requests to STUN server ⓘ
definedIn	RFC 5389 ⓘ
designGoal	be simple and lightweight ⓘ minimize server state ⓘ
firstStandardized	2003 ⓘ
fullName	Session Traversal Utilities for NAT ⓘ
layer	application layer ⓘ
limitation	cannot reliably traverse all symmetric NATs ⓘ does not itself relay media ⓘ
messageType	Binding Error Response ⓘ Binding Request ⓘ Binding Response ⓘ Shared Secret Error Response ⓘ Shared Secret Request ⓘ Shared Secret Response ⓘ
obsoletes	RFC 3489 ⓘ
operatesOver	TCP ⓘ linked to: Transmission Control Protocol UDP ⓘ
purpose	assist devices in traversing NATs and firewalls ⓘ discover public IP address and port of a client ⓘ enable peer-to-peer connectivity ⓘ help determine the type of NAT a client is behind ⓘ
relatedTo	ICE ⓘ TURN ⓘ
securityMechanism	HMAC-SHA1 for message integrity ⓘ long-term credential mechanism ⓘ short-term credential mechanism ⓘ
serverRole	reflects observed source IP address and port ⓘ
standardizedBy	IETF ⓘ linked to: Internet Engineering Task Force
supportsTransport	IPv4 ⓘ IPv6 ⓘ
updatedSpecificationYear	2008 ⓘ
usedBy	SIP-based systems ⓘ VoIP applications ⓘ WebRTC ⓘ real-time communication applications ⓘ
usesAttribute	FINGERPRINT ⓘ MAPPED-ADDRESS ⓘ MESSAGE-INTEGRITY ⓘ NONCE ⓘ REALM ⓘ USERNAME ⓘ XOR-MAPPED-ADDRESS ⓘ
usesEncoding	binary message format ⓘ
usesIdentifier	transaction ID ⓘ
usesPort	TCP port 3478 ⓘ UDP port 3478 ⓘ
workingGroup	MMUSIC ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Interactive Connectivity Establishment → relatedTo → STUN protocol ⓘ

NAT and firewall traversal requirements for WebRTC → relatedTo → STUN ⓘ

linked to: STUN protocol

IETF ICE Working Group → topic → STUN ⓘ