Chapter 6. ATTACKING VOIP INFRASTRUCTURE

VoIP networks are vulnerable to many forms of common network attacks, and devices that support VoIP infrastructure are also vulnerable to similar issues. In this chapter, we will discuss the security weaknesses that affect the functional components that make up a VoIP network, from devices (hard phones, gatekeepers, registrars, and proxies) to applications (e.g., Cisco CallManager, Avaya Call Center/Server, and voicemail applications). Specifically, you will learn about:

  • Vendor-specific VoIP sniffing

  • Common hard phone vulnerabilities

  • Cisco CallManager and Avaya Call Center/Server attacks

  • Security holes in the Avaya Modular Messaging Voicemail application

  • Infrastructure server impersonation/redirection

Attacks ...

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