TLS Proxy and Phone Proxy for the Cisco ASA 5500 Series
By Cisco Systems
Firewalls can provide a range of services to protect unified communications applications and servers, but need to be able to inspect encrypted signaling and media traffic. Beginning with Cisco ASA Software Release 8.0(4), Cisco ASA 5500 Series Adaptive Security Appliances support both TLS Proxy and Phone Proxy for protecting unified communications solutions deployments. Cisco TLS Proxy provides secure interworking between the firewall and encrypted voice calls within the campus or branch network. Cisco Phone Proxy enables organizations to use the native phone encryption capability in Cisco IP phones to create secure calls from the Internet or externally connected phones. Phone Proxy can also be used to provide a secure VLAN traversal solution for Cisco IP Communicator soft phones on the data VLAN that are connecting to IP phones on the phone VLAN.