[OpenSIPS-Users] [OT] SIP ALG Detector released

[Brett Nemeroff]

Neat! Great Idea. I hate ALGs. BTW, Does anyone know of an ALG that actually
works?

On Sat, Jun 13, 2009 at 7:19 PM, Iñaki Baz Castillo <ibc at aliax.net> wrote:

> Hi, as part of my personal battle against SIP ALG routers, I've created an
> utility to detect such routers:
>
>  http://dev.sipdoc.net/wiki/sip-stuff/SIP-ALG-Detector
>
> It has two parts: client and server:
>
> Basically, the client node running into the LAN sends an INVITE to the
> server
> node (running in a host with public IP).
> The request could be modified by the LAN router if SIP ALG is enabled.
> The server encodes the received request in Base64 and appends it to the SIP
> response.
> The client receives the response, decodes the body and gets the request as
> it
> arrived to the server.
> Then it creates a diff between the original request and the the request the
> server node received. These differences are displayed in the screen.
>
> Both, UDP and TCP, tests are performed.
>
>
> The client node is coded in Ruby and should work in any operating system
> (if
> Ruby is installed).
>
> The server node is also coded in Ruby.
>
>
> For those interested in trying it, I have a server node running in my
> personal
> server:
>  87.98.230.161:5060
> You can test the client against my server.
>
>
> Feedback is welcome :)
> Regards.
>
>
> --
> Iñaki Baz Castillo <ibc at aliax.net>
>
>
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>
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