[Asterisk-Users] Asterisk as a SIP server behind nat, clients on the outside connecting to Asterisk

[Olle E. Johansson]

Steve Beaumont wrote:

> On the wiki pages it suggests that clients on the outside of NAT can connect
> to an Asterisk server behind nat. (option no 3). The note suggests that this
> can work with port forwarding and some 'header mangling magic'.
> 
> I have the port forwarding configured however, when I try to connect an
> external client through the firewall the client does not correctly register.
> The REGISTER message is received, the server responds with Status 100
> trying, followed by Status 407 Proxy Authentication required. This repeated
> several times.
"407 proxy authentication required" means that the client has to authenticate.
Check username and secret on both ends.

/O