Part II: Cisco IP Telephony Network Security
Chapter 5 Cisco IP Telephony Physical Security
Chapter 6 Cisco IP Telephony Layer 2 Security
Chapter 7 Cisco IP Telephony Layer 3 Security
Chapter 8 Perimeter Security with Cisco Adaptive Security Appliance
“If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them.” –Henry David Thoreau
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