," IETF. Work in progress. [RFC 768] J. Postel. "User Datagram Protocol," IETF. August 1980. [RFC 791] J. Postel. "INTERNET PROTOCOL," IETF. September 1981. [RFC 793] J. Postel. "Transmission Control Protocol," IETF. September 1981. [RFC 821] J. Postel. "Simple Mail Transfer Protocol," IETF. August 1982. [RFC 854] J. Postel, J.K. Reynolds. "Telnet Protocol Specification," IETF. May 1983. [RFC 1633] R. Braden, D. Clark, S. Shenker. "Integrated Services in the Internet Architecture: An Overview," IETF. June 1994. [RFC 1777] W. Yeong, T. Howes, S. Kille. "Lightweight Directory Access Protocol," IETF. March 1995. [RFC 1827] R. Atkinson. "IP Encapsulating Security Payload (ESP)," IETF. August 1995. [RFC 1889] H. Schulzrinne, S. Casner, R. Frederick, V. Jacobson. "RTP: A Transport Protocol for Real-Time Applications," IETF. January 1996. [RFC 1958] B. Carpenter. "Architectural Principles of the Internet," IETF. June 1996. [RFC 2026] S. Bradner. "The Internet Standards Process - Revision 3," IETF. October 1996. References [RFC 2045] N. Freed, N. Borenstein. "Multipurpose Internet Mail Exten- sions (MIME) Part One: Format of Internet Message Bodies," IETF. November 1996. [RFC 2060] M. Crispin. "Internet Message Access Protocol-Version 4rev1," IETF. December 1996. [RFC 2068] R. Fielding, J. Gettys, J. Mogul, H. Frystyk, T. Berners-Lee. "Hypertext Transfer Protocol-HTTP/1.1," IETF. January 1997. [RFC 2131] R. Droms. "Dynamic Host Configuration Protocol," IETF. March 1997. [RFC 2205] R. Braden, Ed., L. Zhang, S. Berson, S. Herzog, S. Jamin. "Resource ReSerVation Protocol (RSVP)-Version 1 Functional Specification," IETF. September 1997. [RFC 2246] T. Dierks, C. Allen. "The TLS Protocol Version 1.0," IETF. January 1999. [RFC 2326] H. Schulzrinne, A. Rao, R. Lanphier. "Real Time Streaming Protocol (RTSP)," IETF. April 1998. [RFC 2327] M. Handley, V. Jacobson. "SDP: Session Description Protocol," IETF. April 1998. [RFC 2475] S. Blake, D. Black, M. Carlson, E. Davies, Z. Wang, W. Weiss. "An Architecture for Differentiated Servic