This paper presents the design and analysis of a multilayer protection scheme against denial-of-service (DoS) attacks in IP telephony enabled enterprise networks. While there are ...
Abstract Within the traditional telephone system a certain level of quality and security has been established over the years. If we try to use IP Telephony systems as a core part o...
Ralf Ackermann, Markus Schumacher, Utz Roedig, Ral...
Telephony over IP is exposed to multiple security threats. Conventional protection mechanisms do not fit into the highly dynamic, open and large-scale settings of VoIP infrastructu...
SIP appears to be a powerful and useful signaling protocol supporting mobility for wireless IP networks but it has inherent weaknesses and dangers. This paper is a study on the se...
A method is presented which analyses the audio speech data of voice calls and calculates an "acoustic fingerprint". The audio data of the voice calls are compared with e...