VoIP security threats: Fact or fiction?

Garretson, Cara
July 2005
Network World;7/25/2005, Vol. 22 Issue 29, p14
Trade Publication
The article focuses on increasing voice over Internet protocol (VoIP) security threats by intruders. In June 2005, a company called Internet Security Systems Inc. (ISS) issued an alert to warn users that Cisco Systems Inc.'s VoIP offering had a security flaw that would allow just that. According to the company, this implementation flaw in Cisco's Call Manager, which handles call signaling and routing, could allow a buffer overflow that would grant an intruder access to the system to listen in on all calls routed through it. This is one scenario described by ISS and other vendors focused on selling technology to plug the security holes in VoIP a method for sending voice traffic over IP that many say was not designed with security in mind. For the moment, VoIP security does not appear to be at the forefront of IT managers' minds. Last year, VoIP management vendor Qovia announced it had filed a patent covering a technique for catching VoIP spam, considered to be one of the more immediate threats to these networks.


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