You can do either,
1. write your own C module to compare the src_ip and r-uri's ip address, or
2. use exec_msg() to call a shell script. This function exports variables to the shell. It is in ser admin guide section 4.1
Richard
-----Original Message----- From: Allan [mailto:voip_tango@yahoo.ca] Sent: Friday, October 29, 2004 2:33 PM To: Richard Subject: RE: [Serusers] Multiple UA behind NAT and SIP Proxy Outside LAN
Thanks Richard,
How would this line look? I have read through the admin guide a number of times but have not seen how to do this. How would I actually compare the src_ip variable with part of the uri?
Regards, Allan
--- Richard richard@o-matrix.org wrote:
You can check if the src_ip and the r-uri's ip address are the same. Just make sure this is done after lookup() and before being forwarded. This method has lots of limitations. Check the archive for more discussions. But most of time it is sufficient.
-----Original Message----- From: serusers-bounces@lists.iptel.org
[mailto:serusers-bounces@lists.iptel.org] On
Behalf Of Allan Sent: Friday, October 29, 2004 2:08 PM To: Andris Parra L.; serusers@lists.iptel.org Subject: Re: [Serusers] Multiple UA behind NAT and
SIP Proxy Outside LAN
I am also looking for a way to determine if two
UAs
are behind the same NAT. I have found that if I
do
not force rtp_proxy between two UAs known to be
behind
the same NAT, the call is setup and torn down
through
SER and RTP is sent directly between the two UAs. This is how I want to call to operate. I just
can't
see a way via SER's scripting language to make a decision based on the src_ip of the initial
request
and a portion of the URI domain, which in my case
is
the IP address of the NAT.
Regards, Allan
--- "Andris Parra L." apl_1980b@yahoo.com
wrote:
I4m wondering if there is a way to comunicate UA agents betwen them that are behind the same nat, they are working perfectly with the outside
world
(I4m not having problems with Nat traversal),
but
they try to send the RTP and RTCP data to the aparent public IP that they are registered in
the
Sip Proxy, and of course, the multimedia data
isn4t
processed by the router because the destination
IP
is the one asigned to the WAN interface of it
and it
sees it in the LAN interface. I4m thinking that maybe the Sip Proxy (ser 0.14) isn4t the problem, maybe the infraestructure is
not
enough, so, is there anything that you could
answer
me tha guide me in this scenario?
I4ll be grateful for any information you could
give
me.
Andris Parra L. apl_1980b@yahoo.com Ipsofactum LTDA. www.ipsofactum.com
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Richard