[asterisk-users] OT: Cisco 1841 - Can it be made SIP aware?

[Benny Amorsen]

Stefan Gofferje <list-asterisk-users at gofferje.homelinux.org> writes:

> Interesting. I have my Asterisk with RFC-1918 IPs behid a NATting PIX
> and the FIXUP SIP of the PIX makes it very easy for me to use my * as
> server for external clients as well as as client for SIP providers.

A lot of phones come preconfigured for STUN or ICE, and it is tempting
to set Asterisk up with nat=yes. If the firewall is SIP-aware and the
SIP-device is NAT-aware, things usually break.

Now ask all your customers to figure out whether their
firewalls/NAT-routers do SIP-fixup, and tell them to set STUN/ICE
accordingly. Most of them will have absolutely no idea what you are
talking about.

Did I mention that I hate NAT?


/Benny