Understanding Security Features For Cisco Unified Ip Phones - Cisco 7921G - Unified Wireless IP Phone VoIP Administration Manual

Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7921G

Understanding Security Features for Cisco Unified IP Phones

Implementing security in the Cisco Unified Communications Manager system prevents identity theft
and prevents data, call signaling, and media stream tampering. To reduce or eliminate threats, the Cisco
IP telephony network establishes and maintains authenticated and encrypted communication streams
between a phone and the Cisco Unified Communications Manager server, digitally signs files before
transferring the files to a phone, and encrypts media streams and call signaling between Cisco Unified
IP phones.
Table 1-1
Topic
Detailed explanation of security, including set up,
configuration, and troubleshooting information
for Cisco Unified Communications Manager and
Cisco Unified IP Phones
Security features supported on the Cisco Unified
IP Phone
Restrictions regarding security features
Viewing a security profile name when running
Cisco Unified Communications Manager 5.0 or
later
Identifying phone calls for which security is
implemented
Transport Layer Security (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
Items on the Security Configuration menu on the
phone
Unlocking the CTL file
Disabling access to phone web pages
Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified Communications Manager Release 7.0
OL-15985-01
Table 1-1 contains additional information about security.
Cisco Unified IP Phone and Cisco Unified Communications Manager
Security Topics
Understanding Security Features for Cisco Unified IP Phones
Reference
Refer to Cisco Unified Communications Manager
Security Guide
See the "Overview of Supported Security
Features" section on page 1-8
See the "Security Restrictions" section on
page 1-11
See the "Understanding Security Profiles" section
on page 1-10
See the "Identifying Encrypted and Authenticated
Phone Calls" section on page 1-11
See the "Networking Protocols Used with Cisco
Unified Wireless IP Phones" section on page 2-7
See the "Phone Configuration Files and Profile
Files" section on page 2-12
See the "Understanding the Phone Startup
Process" section on page 3-18
See the "Phone Configuration Files and Profile
Files" section on page 2-12
See the "Configuring Network Profiles" section
on page 4-8
See the "Viewing Security Information" section
on page 8-1
See the "Accessing the CTL File Screen" section
on page 8-3
See the "Product-Specific Configuration Options
for the Cisco Unified Wireless IP Phone 7921G"
section on page 7-13
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