Table Of Contents
Cisco Unified Communication Trusted Firewall Control-Version II
Cisco Unified Communications Trusted Firewall Control pushes intelligent services onto the network through a Trusted Relay Point (TRP) firewall. TRP is a Cisco IOS service feature, which is similar to the Resource Reservation Protocol (RSVP) agent. Firewall traversal is accomplished using Session Traversal Utilities for NAT (STUN) on a TRP colocated with a Cisco Unified Communications Manager Express (Cisco Unified CME), Cisco Unified Border Element, and Media Termination Points (MTP).
This release introduces the following features:
•Noncolocated firewall for UC SIP trunks
•Support Firewall traversal for Cisco Unified Border Element call flows in which the media flow through the Media Termination Points such as MTP, Transcoder, or Conference bridge with Trust Relay Point (TRP) enabled.
•Firewall traversal for additional Cisco Unified Border Element call flows using STUN.
Prerequisites for Cisco Unified Communication Trusted Firewall Control-Version II
Cisco Unified Border Element
•Cisco IOS Release 15.0(1)T or a later release must be installed and running on your Cisco Unified Border Element.
Cisco Unified Border Element (Enterprise)
•Cisco IOS XE Release 3.3S or a later release must be installed and running on your Cisco ASR 1000 Series Router.
Configuring Cisco Unified Communication Trusted Firewall Control-Version II
To enable this feature, see the "Cisco Unified Communications Trusted Firewall Control-Version II" feature guide.
Detailed command information for the stun flowdata catlife command is located in the Cisco IOS Voice Command Reference.