[Serusers] SER, and the two firewall problem

[Richard Southwick]

Hi all --

We're using SER as a registrar and proxy, and need to deal with the
following NAT problem:

*	SER is proxying to asterisk, which is behind a firewall.
*	Our users are registering with SER, but their UAs are behind
another firewall.

We're looking at nathelper and rtpproxy. Two questions:

*	Will this combo (SER, nathelper, rtpproxy) work in this scenario
to solve the NAT and pinhole issues?
*	Does SER have to live outside the firewall, or is there a way it
can be behind the same firewall as Asterisk?

Thanks for any insight,

Richard
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