Cisco Systems ASA 5585-X Manual De Usuario

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15-3
Cisco ASA Series Firewall CLI Configuration Guide
 
Chapter 15      Using the Cisco Unified Communication Wizard
  Licensing Requirements for the Unified Communication Wizard
Using the ASA as a secure presence federation proxy, businesses can securely connect their Cisco 
Unified Presence (Cisco UP) servers to other Cisco or Microsoft Presence servers, enabling 
intra-enterprise communications. The security appliance terminates the TLS connectivity between the 
servers, and can inspect and apply policies for the SIP communications between the servers. 
Cisco Intercompany Media Engine Proxy: Secure connectivity between Cisco UCM servers in different enterprises 
for IP Phone traffic
As more unified communications are deployed within enterprises, cases where business-to-business calls 
utilize unified communications on both sides with the Public Switched Network (PSTN) in the middle 
become increasingly common. All outside calls go over circuits to telephone providers and from there 
are delivered to all external destinations.
The Cisco Intercompany Media Engine (UC-IME) gradually creates dynamic, encrypted VoIP 
connections between businesses, so that a collection of enterprises that work together end up looking 
like one giant business with secure VoIP interconnections between them. 
There are three components to a Cisco Intercompany Media Engine deployment within an enterprise: a 
Cisco Intercompany Media Engine server, a call agent (the Cisco Unified Communications Manager) 
and an ASA running the Cisco Intercompany Media Engine Proxy. 
The ASA provides perimeter security by encrypting signaling connections between enterprises and 
preventing unauthorized calls. An ASA running the Cisco Intercompany Media Engine Proxy can either 
be deployed as an Internet firewall or be designated as a Cisco Intercompany Media Engine Proxy and 
placed in the DMZ, off the path of the regular Internet traffic.
Licensing Requirements for the Unified Communication Wizard
To run the Unified Communication Wizard in ASDM, you require the following license:
However, to run each of the Unified Communications proxy features created by the wizard, you must 
have the appropriate Unified Communications Proxy licenses. 
The Cisco Unified Communications proxy features supported by the ASA require a Unified 
Communications Proxy license:
Cisco Phone Proxy
TLS proxy for encrypted voice inspection
Presence Federation Proxy
Cisco Intercompany Media Engine Proxy
See 
 for more information.
Note
The Cisco Intercompany Media Engine Proxy does not appear as an option in the Unified 
Communication Wizard unless the license required for this proxy is installed on the ASA.
Model
License Requirement
All models
Base License