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Securing Cisco IP Telephony Networks by Akhil Behl

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Chapter 16. Cisco IP Telephony: Network Management Security

A few days ago, you were logged into one of the voice gateway (one of many in your organization XYZ’s network) to configure some new dial-peers. Today, when you log in again, you see some major changes in the configuration. The POTS dial-peers are now pointing to some international numbers. Surprised? Did you reckon that you were using Telnet to manage the router and that a smart insider attacker was sniffing the traffic? Waiting for you to log off to show his magic!

Having a secure IP Telephony network in place does not mean that you can take the management aspect of it for granted. Managing an IP Telephony network includes everything that touches or is involved in voice media or signaling, ...

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