Chapter 23. Hardening the IP Phone

Hardening the IP Phone

This chapter covers the following topics:

  • Identifying potential threats against IP phones and the attack tool or method

  • Explaining how signed firmware images prevent rogue or incorrect images from being placed on the IP phone

  • Configuring parameters in the Phone Configuration window of Cisco CallManager Administration to harden the IP phone

  • Explaining how disabling the PC port, the Settings button, and web access help secure the IP phone

  • Explaining how, by ignoring gratuitous ARP, the IP phone can help prevent a man-in-the-middle attack

  • Explaining how blocking the PC from accessing the voice ...

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