Hi,
Am 14.06.2009 2:17 Uhr, schrieb IƱaki Baz Castillo:
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 try it, I have a server node running in my
personal
server:
87.98.230.161:5060
You can test the client against my server.
nice idea. Could be handy for techies.
Even though I did not tried it yet I'm wondering why you/we need a
special server for this?
Wouldn't a sip-router module with this function an even better solution?
Then every sip-router out there could offer this "service" under some
special username.
It could also be implemented by using transformations. Just add a base64
transformation and append_to_reply()
regards
klaus