[Linphone-users] linphone on a specific IP address

[Jason A. Pattie]

Hello,

I have a specific setup where I connect to my work's network using a VPN 
with a Virtual IP inside the office network's IP range.  The firewall is 
setup to proxy ARP requests for the Virtual IP so traffic originating 
from the internal network gets routed to the firewall and encrypted and 
sent to my workstation at home.

The reason I'm writing all this is because it doesn't seem that linphone 
has the ability to specify the IP address of the 'Contact:' portion of a 
SIP REGISTER event.  I've watched the traffic go from my workstation at 
home to the SIP endpoint (using Asterisk PBX in the office), but when it 
attempts to send messages "back", they originate on the Asterisk machine 
wanting to go to my workstation's local IP address, not my workstation's 
Virtual IP address.

So, I put an iptables rule on the PBX system to destination NAT packets 
destined for my workstation's local IP address to my workstation's 
Virtual IP address.  This caused the packets to flow properly, but then 
linphone crashed, and a GNOME dialog popped up telling me that linphone 
had crashed and to click to visit the GNOME bug report page, or 
something like that.  Currently, linphone does not crash if I do not 
direct it to use the Asterisk PBX system as a registrar.  But, then I 
cannot make calls without registering.

I did download the tarball of linphone 0.12 and attempted to find a way 
to cause linphone to use my Virtual IP instead of the local IP.  I found 
the code that gets the IP address to send in the REGISTER message and 
replaced the calls with direct assignments to my Virtual IP address. 
This caused the packets to flow properly (I only compiled the linphonec 
console app since I couldn't find .deb packages for libgnomeui-2.0, 
etc.), but linphonec crashed with a Segmentation Fault error.

Thanks for your help.


--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
MailScanner thanks transtec Computers for their support.