On Wed, 2005-05-25 at 14:34 +1200, William wrote:
> I've had some difficulty finding a firewall (aside from Cisco PIX) that
> fixes up SIP packets traversing NAT.

I'm using m0n0 as the standard firewall/traffic shaper for Asterisk
installations with SIP telephones. Both Asterisk and the telephones I'm
working with have internal functions to rewrite the SIP headers to get
through NAT. I haven't had to touch anything in the m0n0 configuration.
Are there some telephones which won't rewrite their headers to
accomodate NAT? It seems that the mythical SBC that many companies sell
for a bazillion dollars aren't doing much more than this.

-lee