1. Arkko, J., Torvinen, V., Camarillo, G., Niemi, A., Haukka, T.: Security Mechanism Agreement for the SIP. RFC 3329 (January 2003)
2. Deng, X., Shore, M.: Advanced Flooding Attack on a SIP Server. In: Proc. of the Intl. Conf. on Availability, Reliability and Security (ARES), pp. 647–651. IEEE Computer Society (March 2009)
3. Franks, J., Hallam-Baker, P., Hostetler, J., Lawrence, S., Leach, P., Luotonen, A., Stewart, L.: HTTP Authentication: Basic and Digest Access Authentication. RFC 2617 (June 1999)
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