[Freeswitch-users] Does FS support STUN by default?

[Fred-145]

Michael Jerris wrote:
> we also support natpmp and static ip setting.

What is "static ip setting"? Telling FS what the public IP is? If that's
what it is, what about the UDP ports that must be open to allow incoming
connections?

So, in the case where the FS server is located in a private network, these
are the ways to open up the ports it needs to allow remote SIP users to
connect to it:
- UPnP and NAT-PMP (FS asks the router for its public IP, and negotiates
opening the required UDP ports dynamically)
- STUN (to get the public IP address from a remote STUN server) +
port-mapping (to permanently open required UDP ports on NAT firewall)
- possibly this fourth solution above
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