Siproxd is a SIP proxy for SIP-based softphones hidden behind an IP masquerading firewall. It includes an RTP data stream proxy for incoming and outgoing audio data. Multiple local users/hosts can be simultaneously masqueraded. All configuration is done via one simple ASCII text file. License: GNU General Public License (GPL) Changes: Newly introduced features include an RTP de-jitter mechanism, ';rport' support, and the ability to masquerade the User-Agent string sent out into the public Internet. The DNS resolver has been changed to keep failed DNS attempts in cache for 10 minutes. This provides a certain level of protection from repeating DNS timeouts (e.g. a dead DNS server). A number of minor bugfixes are included.

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