Specifications

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Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP and SIP)
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Chapter 1 An Overview of the Cisco Unified IP Phone
Understanding Security Features for Cisco Unified IP Phones
Related Topics
• Understanding Security Profiles, page 1-15
• Identifying Authenticated, Encrypted, and Protected Phone Calls, page 1-15
• Security Restrictions, page 1-20
• Device Configuration Menu, page 4-17
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 Ensures that all SCCP and SIP 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 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 nonsecure, authenticated, encrypted, or protected. See
Understanding Security Profiles, page 1-15 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’s 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 PC port
• Disabling Gratuitous ARP (GARP)
• Disabling PC Voice VLAN access
• Disabling access to the Setting menus, or providing restricted access that allows access to
the User Preferences menu and saving volume changes only
• Disabling access to web pages for a phone
Note You can view current settings for the PC Port Disabled, GARP Enabled, and Voice
VLAN enabled options by looking at the phone’s Security Configuration menu. For
more information, see
Device Configuration Menu, page 4-17.
802.1X Authentication The Cisco Unified IP Phone can use 802.1X authentication to request and gain access to the
network. See
Supporting 802.1X Authentication on Cisco Unified IP Phones, page 1-18 for
more information.
Table 1-4 Overview of Security Features (continued)
Feature Description