H.323 Video Conferencing with GNU Gatekeeper

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H.323 Video Conferencing with GNU Gatekeeper has been improved with the new released announced by Jan Willamowius, Founder of the GNU Gatekeeper Project.

A new major release of the GNu Gatekeeper has been anounced. This new version “has many new features that will allow even your legacy endpoints to move to a new age of H.323 audio and video communications.”

New features:
– full traversal zone support (gatekeeper-to-gatekeeper H.460.18/.19)
Now you can place one GnuGk behind a firewall and let it tunnel out the calls for all other devices behind the firewall eg. to a VCS or to another GnuGk.
This was probably the most request feature in the past.

– full IPv6 support (incl. IPv4-IPv6 proxying)
With the proxy function, you can let GnuGk manage a network of IPv6 endpoints and connect them to the IPv4 network or make legacy endpoints reachable for IPv6 calls.

RTP multiplexing (all calls to and from devices supporting H.460.19 will only use 2 sockets total)

– rewrite destination IPs into aliases

– ENUM, SRV and RDS routing policies extended for LRQs, in case the calling gatekeeper isn’t able to do this

– notifications when GnuGk opens listen ports
This allows you to update firewall rules on the fly, so you only have the minimum amount of ports open.

– improved H.235 password authentication with neighbors

– massive performance improvement when (re-)loading large numbers of GW rewrites

– interop fixes for Polycom m100 and Sorenson endpoints

– fixes in the underlying libraries so *BSD systems can get the latest GnuGk features

– a few bug fixes

The project provides executables for Linux (32 and 64 bit), Windows, MacOS X, FreeBSD, OpenBSD, NetBSD and Solaris.

You can download the new version at


Enjoy the new release of such a great software!