Understanding Security Profiles; Identifying Encrypted And Authenticated Phone Calls - Cisco 7945G Administration Manual

Understanding Security Features for Cisco Unified IP Phones
Table 1-3 Overview of Security Features (continued)
Feature
Secure SRST reference
(SCCP pohones only)
Media encryption
Signaling encryption
CAPF (Certificate Authority
Proxy Function)
Security profiles
Encrypted configuration files
Optional disabling of the web
server functionality for a phone
Phone hardening
802.1X Authentication
Related Topics
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Cisco Unified IP Phone 7965G and 7945G Administration Guide for Cisco Unified Communications Manager 6.1(3)
1-12
Description
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.
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.
Ensures that all SCCP signaling messages that are sent between the device and the
Cisco Unified Communications Manager server are encrypted.
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.
Defines whether the phone is nonsecure, authenticated, or encrypted. See the
"Understanding Security Profiles" section on page 1-13
Lets you ensure the privacy of phone configuration files.
You can prevent access to a phone's web page, which displays a variety of operational
statistics for the phone.
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 the
The Cisco Unified IP Phone can use 802.1X authentication to request and gain access to
the network. See the
section on page 1-15
Understanding Security Profiles, page 1-13
Identifying Encrypted and Authenticated Phone Calls, page 1-13
Device Configuration Menu, page 4-10
Supporting 802.1X Authentication on Cisco Unified IP Phones, page 1-15
Security Restrictions, page 1-17
Chapter 1
"Device Configuration Menu" section on page
"Supporting 802.1X Authentication on Cisco Unified IP Phones"
for more information.
An Overview of the Cisco Unified IP Phone
for more information.
OL-17755-01
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