 | SiproxdA SIP proxy for SIP-based softphones hidden behind an IP masquerading firewall |
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Siproxd Description
A SIP proxy for SIP-based softphones hidden behind an IP masquerading firewall Siproxd is a proxy/masquerading daemon for the SIP protocol. It handles registrations of SIP clients on a private IP network and performs rewriting of the SIP message bodies to make SIP connections work via an masquerading firewall (NAT).Siproxd project allows SIP software clients (like kphone, linphone) or SIP hardware clients (Voice over IP phones which are SIP-compatible, such as those from Cisco, Grandstream or Snom) to work behind an IP masquerading firewall or NAT router.SIP (Session Initiation Protocol, RFC3261) is the protocol of choice for most VoIP (Voice over IP) phones to initiate communication. By itself, SIP does not work via masquerading firewalls as the transfered data contains IP addresses and port numbers.There do exist other solutions to traverse NAT existing (like STUN, or SIP aware NAT routers), but such a solutions has its disadvantages or may not be applied to a given situation. Siproxd does not aim to be a replacement for these solutions, however in some situations siproxd may bring advantages.HOW TO GET STARTEDmake sure libosip2 is installedIf your libposip2 libraries are installed in /usr/local/lib, be sure to include this library path to /etc/ld.so.conf$ ./configure$ make$ make installedit /usr/etc/siproxd.conf according to your situation.At least configure 'if_inbound' and 'if_outbound'. They must represent the interface names (e.g. on Linux: ppp0, eth1) for the inbound and outbound interface.edit /usr/etc/siproxd_passwd.cfg if you enable client authentication in siproxd.confstart siproxd (siproxd does not require root privileges) $ siproxd
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