Proceedings of the Korean Institute of Information and Commucation Sciences Conference (한국정보통신학회:학술대회논문집)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Secure Framework for SIP-based VoIP Network

SIP 프로토콜을 기반으로한 VOIP 네트워크를 위한 Secure Framework

  • Han, Kyong-Heon (Dept. of Information and Communication Engineering, Chosun University) ;
  • Choi, Sung-Jong (Dept. of Information and Communication Engineering, Chosun University) ;
  • Choi, Dong-You (Dept. of Information and Communication Engineering, Chosun University) ;
  • Bae, Yong-Guen (Dept. of Computer Engineering, Chosun University)
  • Published : 2008.05.30
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Abstract

Session Initiation Protocol (SIP) has become the call control protocol of choice for Voice over IP (VoIP) networks because of its open and extensible nature. However, the integrity of call signaling between sites is of utmost importance, and SIP is vulnerable to attackers when left unprotected. Currently a hop-by-hop security model is prevalent, wherein intermediaries forward a request towards the destination user agent server (UAS) without a user agent client (UAC) knowing whether or not the intermediary behaved in a trusted manner. This paper presents an integrated security model for SIP-based VoIP network by combining hop-by-hop security and end-to-end security.

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