Siproxd: A simple sip proxy 
One of the main issue with SIP is that NAT traversal is a nightmare. When you connect to your corporate network using a VPN, it is not easy to use a sip hard phone. Using a softphone is, in general, the simplest way.
However a small tool really useful can help you: Siproxd
Siproxd is a Sip proxy really simple to use. After a standard installation (depending of your distribution) you can start to configure it. Three parameters must be modified:
- if_inbound: used to define the network interface used as internal network. It’s the network where your sip phone is plugged (eth0 for example)
- if_outbound: used to define external network interface. In my case it is the VPN’s virtual network interface (tap0 for example)
- hosts_allow_reg: list of networks allowed to register to a SIP server.
Now you have a fully functional Sip proxy. Adding debug log (silence_log parameter) can help you for diagnostic.
Finally only a Microsoft Windows port is missing…
Project web : siproxd
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Posted by: Jean-Samuel Reynaud, on 05/21/2008 Trackback | Popularity: 22% tagged NAT, proxy, SIP, sip proxy and vpn |
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