Understanding Security Features For Cisco Ip Phones - Cisco 7961G Administration Manual

Chapter 1 An Overview of the Cisco IP Phone

Understanding Security Features for Cisco IP Phones

Table 1-2 Cisco IP Phone and Cisco CallManager Security Topics
Topic
Detailed explanation of security, including set up,
configuration, and troubleshooting information
for Cisco CallManager and Cisco IP Phones
Security features supported on the Cisco IP Phone See the
Restrictions regarding security features
Identifying phone calls for which security is
implemented
TLS connection
Security and the phone startup process
Security and phone configuration files
Changing the TFTP Server 1 or TFTP Server 2
option on the phone when security is implemented
Cisco IP Phone Administration Guide for Cisco CallManager, Cisco IP Phone 7961G/7961G-GE and 7941G/7941G-GE
OL-6966-01
Implementing security in the Cisco CallManager system prevents identity theft of
the phone and Cisco CallManager server, prevents data tampering, and prevents
call signaling and media stream tampering.
To alleviate these threats, the Cisco IP telephony network establishes and
maintains authenticated and encrypted communication streams between a phone
and the server, digitally signs files before they are transferred to a phone, and
encrypts media streams and call signaling between Cisco IP phones.
Table 1-2 shows where you can find additional information about security in this
and other documents.
Understanding Security Features for Cisco IP Phones
Reference
Refer to Cisco CallManager Security Guide
"Overview of Supported Security
Features" section on page 1-12
See the "Security Restrictions" section on
page 1-15
See the "Identifying Encrypted and Authenticated
Phone Calls" section on page 1-15
See the "What Networking Protocols are
•
Used?" section on page 1-5
See the "Adding Phones to the
•
Cisco CallManager Database" section on
page 2-11
See the "Understanding the Phone Startup
Process" section on page 2-9
See the "Adding Phones to the Cisco CallManager
Database" section on page 2-11
See Table 4-2, in the "Network Configuration
Menu" section on page 4-6
1-11