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Cisco Unified Wireless IP Phone 7925G Administration Guide for Cisco Unified Communications Manager 7.0(1)
OL-15984-01
Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7925G
Understanding Security Features for Cisco Unified IP Phones
Manufacturing installed
certificate
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.
Secure Cisco Unified SRST
reference
After you configure a SRST reference for security and then reset the
dependent devices in Cisco
Unified Communications Manager
Administration, the TFTP server adds the SRST certificate to the
phone cnf.xml file and sends the file to the phone. A secure phone
then uses a TLS connection to interact with the SRST-enabled
router.
Media encryption Uses SRTP to ensure that the media streams between supported
devices proves secure and that only the intended device receives
and reads the data. Includes creating a media master key pair for the
devices, delivering the keys to the devices, and securing the
delivery of the keys while the keys are in transport.
Signaling encryption by using
TLS
Ensures that all SCCP signaling messages that are sent between the
device and the Cisco
Unified Communications Manager server are
encrypted.
CAPF (Certificate Authority
Proxy Function)
Implements parts of the certificate generation procedure that are too
processing-intensive for the phone, and it interacts with the phone
for key generation and certificate installation. The CAPF can be
configured to request certificates from customer-specified
certificate authorities on behalf of the phone, or it can be configured
to generate certificates locally.
Security profiles Defines whether the phone is non-secure, authenticated, or
encrypted. See the
“Understanding Security Profiles” section on
page 1-12 for more information.
Encrypted configuration files Lets you ensure the privacy of phone configuration files.
Optional disabling of the web
server functionality for a phone
You can prevent access to a phone web page, which displays a
variety of operational statistics for the phone.
Phone hardening Additional security options, which you control from
Cisco
Unified Communications Manager Administration:
• Disabling Gratuitous ARP (GARP)
• Disabling access to the Setting menus
• Disabling access to web pages for a phone
Note You can view current settings for the GARP Enabled, and
Web Access options by looking at the phone’s Device
Information menu. For more information, see the
“Viewing
Security Information” section on page 8-1.
Table 1-3 Description of Security Features (continued)
Feature Description
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