RE: [Iaxclient-devel] firewalls and TCP connections ... ?

[Chris G. N. <cg...@gl...>]

If this is already done, packaged, and reasonably priced, and can still =
work with the other free iax clients and servers, sounds like a way to =
go...

Can you provide more info on this setup?

thanks!
Chris =20



-----Original Message-----
From:	Steve Kann [mailto:st...@st...]
Sent:	Thu 5/20/2004 9:23 AM
To:	Chris G. Nicholas
Cc:	iax...@li...
Subject:	Re: [Iaxclient-devel] firewalls and TCP connections ... ?
Chris G. Nicholas wrote:

>just learning about Asterix; cool!
>
>Apologies in advance if this has been answered before. =20
>
>Even though I fully realize TCP/IP connections suck compared to UDP for =
streaming media, unfortunately the only port one can generally count on, =
particularly at industry conferences, is outbound port 80 using TCP =
connections from behind a NAT.  (hence the famous John Walker =
'speakfree' end-of-life lament...)
>
>Just wondering if anyone has thought about the feasibility of a TCP =
connection option in iaxclient, initially just connecting to an =
external/simple/stupid tunnel proxy that turns around and connects to an =
Asterix PBX, or even just building in port 80/TCP support into Asterix =
itself...
> =20
>

Actually, we do IAX over either straight TCP, or actual rfc-compliant=20
HTTP.=20

Unfortunately, we do this with a proprietary program [external to=20
iaxclient], and can't release it, but I think there are similar=20
solutions available.  They don't need to be built into iaxclient to use=20
them.  The same reasons that make IAX work well with NATs make it work=20
fine with tunnels as well.


So basically, what you need to do is this:

          Client machine                    =20
Network                            Server
[Iaxclient <-UDP-> tunnel ]  [<- HTTP or TCP -> ] [ tunnel<-UDP-> =
asterisk ]

The tunnel programs at either side are what you need, and it needs to=20
support UDP tunneling.

-SteveK