I need to forward calls to a provider(I don’t need the provider calling me). I am not using VPN so I don’t want to open ports from the outside. I will initiate IAX connection to the provider and my firewall will just allow incoming connections that it initiated. I will then NAT(outbound) the IAX port 4569 to a consistent port(the same translated port in every NAT).
Would this be possible with asterisk?