Chapter 1 An Overview of the Cisco Unified IP Phone
Understanding Security Features for Cisco Unified IP Phones
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Cisco Unified IP Phone 7906G and 7911G Administration Guide for Cisco Unified CallManager 5.1
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Overview of Supported Security Features
Table 1-3 provides an overview of the security features that the phone supports.
For more information about these features and about Cisco Unified CallManager
and Cisco
Unified IP Phone security, refer to Cisco Unified CallManager
Security Guide.
For information about current security settings on a phone, look at the Security
Configuration menus (press the Applications Menu button and choose Settings
> Security Configuration or Settings > Device Configuration > Security
Configuration). For more information, see
Chapter 4, “Configuring Settings on
the Cisco Unified IP Phone.”.
Note Most security features are available only if a certificate trust list (CTL) is installed
on the phone. For more information about the CTL, refer to
Cisco Unified CallManager Security Guide.
Deleting the CTL file from the phone See the “Resetting or Restoring the
Cisco Unified IP Phone” section on page 9-18.
Resetting or restoring the phone See the “Resetting or Restoring the
Cisco Unified IP Phone” section on page 9-18.
Table 1-2 Cisco Unified IP Phone and Cisco Unified CallManager Security Topics (continued)
Topic Reference
Ta b l e 1-3 Overview of Security Features
Feature Description
Image authentication Signed binary files (with the extension .sbn) prevent
tampering with the firmware image before it is loaded on a
phone. Tampering with the image causes a phone to fail the
authentication process and reject the new image.
802.1X Authentication The Cisco Unified IP Phone can use 802.1X authentication to
request and gain access to the network. See the
“Supporting
802.1X Authentication on Cisco Unified IP Phones” section
on page 1-19 for more information.