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.

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Observed surface forms (1)

Surface form Occurrences
STUN 2

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 NERFINISHED ⓘ
designGoal be simple and lightweight ⓘ
minimize server state ⓘ
firstStandardized 2003 ⓘ
fullName Session Traversal Utilities for NAT NERFINISHED ⓘ
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 NERFINISHED ⓘ
operatesOver TCP NERFINISHED ⓘ
UDP NERFINISHED ⓘ
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 NERFINISHED ⓘ
TURN ⓘ
securityMechanism HMAC-SHA1 for message integrity ⓘ
long-term credential mechanism ⓘ
short-term credential mechanism ⓘ
serverRole reflects observed source IP address and port ⓘ
standardizedBy Internet Engineering Task Force ⓘ
surface form: IETF
supportsTransport IPv4 ⓘ
IPv6 ⓘ
updatedSpecificationYear 2008 ⓘ
usedBy SIP-based systems ⓘ
VoIP applications ⓘ
WebRTC NERFINISHED ⓘ
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 NERFINISHED ⓘ

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 protocol ⓘ
this entity surface form: STUN
IETF ICE Working Group → topic → STUN protocol ⓘ
this entity surface form: STUN