Overview Of Supported Security Features - Cisco 7945G Administration Manual

Chapter 1 An Overview of the Cisco Unified IP Phone

Overview of Supported Security Features

Table 1-3
7945G supports. For more information about these features and about Cisco Unified Communications
Manager and Cisco Unified IP Phone security, refer to Cisco Unified Communications Manager
Security Guide.
For information about current security settings on a phone, look at the Security Configuration menus on
the phone (choose Settings > Security Configuration and choose Settings > Device Configuration >
Security Configuration). For more information, see
Unified IP Phone."
Most security features are available only if a certificate trust list (CTL) is installed on the phone. For
Note
more information about the CTL, refer to "Configuring the Cisco CTL Client" chapter in the Cisco
Unified Communications Manager Security Guide.
Table 1-3 Overview of Security Features
Feature
Image authentication
Customer-site certificate
installation
Device authentication
File authentication
Signaling Authentication
Manufacturing installed
certificate
Cisco Unified IP Phone 7965G and 7945G Administration Guide for Cisco Unified Communications Manager 6.1(3)
OL-17755-01
provides an overview of the security features that the Cisco Unified IP Phone 7965G and
Description
Signed binary files (with the extension .sgn) 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.
Each Cisco Unified IP Phone requires a unique certificate for device authentication.
Phones include a manufacturing installed certificate (MIC), but for additional security,
you can specify in Cisco Unified Communications Manager Administration that a
certificate be installed by using the CAPF (Certificate Authority Proxy Function).
Alternatively, you can install an Locally Significant Certificate (LSC) from the Security
Configuration menu on the phone. See the
Phone" section on page 3-14
Occurs between the Cisco Unified Communications Manager server and the phone when
each entity accepts the certificate of the other entity. Determines whether a secure
connection between the phone and a Cisco Unified Communications Manager should
occur, and, if necessary, creates a secure signaling path between the entities using
Transport Layer Security (TLS) protocol. Cisco Unified Communications Manager does
not register phones unless they can be authenticated by the
Cisco Unified Communications Manager.
Validates digitally signed files that the phone downloads. The phone validates the
signature to make sure that file tampering did not occur after the file creation. Files that
fail authentication are not written to Flash memory on the phone. The phone rejects such
files without further processing.
Uses the TLS protocol to validate that no tampering has occurred to signaling packets
during transmission.
Each Cisco Unified IP Phone contains a unique manufacturing installed certificate (MIC),
which is used for device authentication. The MIC is a permanent unique proof of identity
for the phone, and allows Cisco Unified Communications Manager to authenticate the
phone.
Understanding Security Features for Cisco Unified IP Phones
Chapter 4, "Configuring Settings on the Cisco
"Configuring Security on the Cisco Unified IP
for more information.
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