I have reviewed this document as part of the security directorate's  ongoing effort to review all IETF documents being processed by the  IESG.  These comments were written primarily for the benefit of the  security area directors.  Document editors and WG chairs should treat  these comments just like any other last call comments. The Session Description Protocol (SDP) provides a general-purpose format for describing multimedia sessions in announcements or invitations. This ID defines two new protocol identifiers for the File Delivery over Unidirectional Transport (FLUTE) protocol and other required SDP attributes for initiation of a FLUTE session. No security considerations are introduced other than those already pertaining to SDP or FLUTE.  So I do not believe that this ID needs any further attention from a security point of view. Cathy Meadows Catherine Meadows Naval Research Laboratory Code 5543 4555 Overlook Ave., S.W. Washington DC, 20375 phone: 202-767-3490 fax: 202-404-7942 email:  catherine.meadows at nrl.navy.mil