Subject:
security in SIP
From:
"Ahmet Uyar" <auyar@csit.fsu.edu>
Date:
Mon, 19 Mar 2001 12:44:27 -0500
To:
fox@csit.fsu.edu
CC:
"Gurhan" <ggunduz@csit.fsu.edu>, "Hansan Bulut" <bulut@csit.fsu.edu>

SIP: SIP is used to initiate, modify and end the sessions. and all SIP messages could be encripted using PGP. Authentication is also supported. In addition SIP uses RTP for transfering voice and video over networks. and the security of voice and video transmision is provided by RTP. RTP supports encription of RTP packets. The default algorithm which must be supported by all clients is DES-CBC. but other algorithms can also be used. There is an article about RTP security at http://www.hut.fi/~vhallivu/netsec/html/.
 
Information on SIP security can be found at ftp://ftp.isi.edu/in-notes/rfc2543.txt under security considerations.
 
Ahmet Uyar
Ph.D. candidate
Computational Science and Information Technology
Florida State University