RFC 4189: Requirements for End-to-Middle Security for the Session Initiation Protocol (SIP)

A Session Initiation Protocol (SIP) User Agent (UA) does not always trust all intermediaries in its request path to inspect its message bodies and/or headers…

Read RFC 4189 on the RFC Editor

Outgoing relationships (11 related RFCs)

Normative reference — RFC 3261: SIP: Session Initiation Protocol
Informative reference — RFC 3711: The Secure Real-time Transport Protocol (SRTP)
Informative reference — RFC 2246: The TLS Protocol Version 1.0
Informative reference — RFC 2327: SDP: Session Description Protocol
Informative reference — RFC 3852: Cryptographic Message Syntax (CMS)
Informative reference — RFC 2617: HTTP Authentication: Basic and Digest Access Authentication
Informative reference — RFC 4119: A Presence-based GEOPRIV Location Object Format
Informative reference — RFC 3428: Session Initiation Protocol (SIP) Extension for Instant Messaging
Informative reference — RFC 3850: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.1 Certificate Handling
Informative reference — RFC 3303: Middlebox communication architecture and framework
Informative reference — RFC 3893: Session Initiation Protocol (SIP) Authenticated Identity Body (AIB) Format