Hi, GNU Gatekeeper version 4.7 has just been released. This version is purely a security update and has no new features. All users are encouraged to update, especially if you use port detection (IgnoreSignaledIPs=1) you should update ASAP. It has been discovered that GnuGk is vulnerable in some configurations for RTP bleed attacks (https://rtpbleed.com/). By updating to version 4.7 only the first packets in each media stream influence the media destination. To further secure your configuration, you can set [Proxy] RestrictRTPSources=Net to only accept RTP from the same class C network that the call signaling came from. Please beware that this may break a few valid calls where this condition isn't met. You can download the new version from https://www.gnugk.org/h323download.html Please see the full change log below. Changes from 4.6 to 4.7 ======================= - fixes for RTP Bleed - new switch [Proxy] RestrictRTPSources=IP or Net to limit accepting RTP from the call signal IPs or the respective class C network - new switch [Proxy] LegacyPortDetection=1 to keep port detection help for some very old and broken endpoints that will make your gatekeeper vulnerable to RTP Bleed attacks - BUGFIX(ProxyChannel.cxx) replace @ip or ip## from aliases when using RedirectCallsToGkIP - BUGFIX(ProxyChannel.cxx) better initialization of sendmsg() structs - new command line option: now you can use -S instead of --strict (needed on BSD systems) -- Jan Willamowius, Founder of the GNU Gatekeeper Project EMail : jan@xxxxxxxxxxxxxx Website: https://www.gnugk.org Support: https://www.willamowius.com/gnugk-support.html Relaxed Communications GmbH Frahmredder 91 22393 Hamburg Geschäftsführer: Jan Willamowius HRB 125261 (Amtsgericht Hamburg) USt-IdNr: DE286003584 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________________ Posting: mailto:Openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Archive: http://sourceforge.net/mailarchive/forum.php?forum_name=openh323gk-users Unsubscribe: http://lists.sourceforge.net/lists/listinfo/openh323gk-users Homepage: http://www.gnugk.org/
