[Asterisk-Users] Internet Dial-in security questions

[Mark Spencer]

> What I was trying getting at here was to find out whether IAX can use just a
> narrow range of ports - or whether it uses masses of them like SIP. Then the
> external * machine can have all the SIP ports open to the world, but can be
> firewalled from the rest of my network (apart from allowing IAX to the
> internal * server) to limit the damage if it gets compromised. Presumably I
> can configure the internal * so that IAX calls from the external one go into
> the bunker context?

IAX only uses a single port (4569 for IAX2 or 5036 for IAX original)

Mark