Using Phone Proxy where ASA behind NAT device

Unanswered Question
Aug 3rd, 2010

Hi all,

I have a situation where ASA behind a NAT device (load balancer). IP address public is attached to Load balancer. Is it possible to use Phone Proxy feature in ASA?

Thank you.

I have this problem too.
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Joseph Martini Fri, 08/06/2010 - 10:17

The answer most likely is no since the load balancer doing NAT must be compatible with the SCCP version messages being used and able to do deep packet inspection to change IP addresses within the SCCP messages themselves.  If the NAT device can do that it will work, however the only device I know of to do that is the Phone Proxy.

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