Session Description Protocol (SDP) Source Filters
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From: The IESG <email@example.com> To: IETF-Announce <firstname.lastname@example.org> Cc: Internet Architecture Board <email@example.com>, RFC Editor <firstname.lastname@example.org>, mmusic mailing list <email@example.com>, mmusic chair <firstname.lastname@example.org> Subject: Protocol Action: 'Session Description Protocol (SDP) Source Filters' to Proposed Standard The IESG has approved the following document: - 'Session Description Protocol (SDP) Source Filters ' <draft-ietf-mmusic-sdp-srcfilter-11.txt> as a Proposed Standard This document is the product of the Multiparty Multimedia Session Control Working Group. The IESG contact persons are Jon Peterson and Cullen Jennings. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-mmusic-sdp-srcfilter-11.txt
Technical Summary This document defines a "source filter" attribute for the Session Description protocol (SDP) which provides IP address-based filtering for media sessions. Recipients of an SDP message containing the source filter attribute will allow or deny media as appropriate given the origination IP address of the media. This mechanism is not intended to be used in SDP offer/answer cases (such as SIP), but has significant applicability to multicast cases. The limitations of address-based filtering as a security mechanism are highlighted in the document. Working Group Summary The MMUSIC WG supported the advancement of this document. Previous efforts to define a similar address-based filtering mechanism that applied to offer/answer ases, however, were unable to get the consensus of the group. Protocol Quality This document was reviewed for the IESG by Jon Peterson.