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I have an asterisk server that I want to access through a SSL based VPN like this:
This is to avoid some firewalls problems at customers end.
The best solution is that the agent is log into vpn with a simple software client, and get a local ip from asterisk server.
Hopefully it is possible to only routing the sip traffic through vpn (TCP 5060 and UDP)
But if it is necessary to run all traffic through vpn, that will do.
The main thing is that the agent will be able to make calls without nat/firewalls problems
This is Centos 6 with asterisk 1.8