Thursday, October 29, 2020

GNU Gatekeeper 5.6 released

Today GNU Gatekeeper version 5.6 has  been released.


It contains an important bug fix to H.460.19 multiplexing and H.460.26 (media over TCP) when using GnuGk's internal call forwarding (ForwadOnFacility).

I have also added an interop tweak to be able to call video services that don't understand H.323 URL aliases (eg. You can enable it with


Here is the full changelog:

  • new switch: [Routing::SRV] ConvertURLs=1 to convert URL_IDs into H323_IDs
  • BUGFIX(ProxyChannel.cxx) fix RTP multiplexing and H.460.26 when ForwardOnFacility is used
  • BUGFIX(ProxyChannel.cxx) remove H.460.19 feature from Setup when using ForwardOnFacility=1
  • new switch: [Gatekeeper::Main] GrantAllBRQ=1 to accept any BRQ, even if the conferenceID is invalid

Tuesday, June 30, 2020

GNU Gatekeeper 5.5. released

I am happy to announce the release of GNU Gatekeeper 5.5.

This release has new features and bug fixes when you run clustered gatekeepers. It also improves the port detection feature and we have a complete and up to date Chinese documentation.

You can download it from

New features:
  • new feature GnuGkAssignedGatekeeper to push endpoints back to their intended home gatekeepers in the cluster, even if the endpoints don't support assigned gatekeepers
  • support new PBKDF2 password hashes for ssh logins to the status port
  • new switches to fine tune port detection for H.239 channels (IgnoreSignaledPublicH239IPsFrom=x and IgnoreSignaledAllH239IPs=1)
  • new Chinese manual

Bug fixes:
  • select correct source IP for neighbor pings
  • set altGKisPermanent=true when redirecting endpoints
  • fix RRJ to include alternates when RedirectGK=Endpoints limit is reached
  • fix reading of AllowSignaledIPs= switch
  • don't complain about [Neighbor::xxx] SendAliases switch when using--strict


Tuesday, January 7, 2020

GNU Gatekeeper 5.4 released

I am happy to announce the release of GNU Gatekeeper 5.4.

You can download it from

New features:
  • new accounting module to send accounting data to an MQTT server
  • support for redis as database (eg. as backend for password storage)

Bug fixes:
  • important fix for H.245 tunneling translation with H.460.18 endpoints
  • fix for snmpwalk in PTLib-SNMP implementation
  • fix sending alternate gatekeeper list to endpoints with assigned gatekeeper
  • improved DRQ from child gatekeepers
  • fix TLS with neighbor gatekeeper

Please also note that a bug has been found in PTLib that can cause a crash in any GnuGk version if you use the status port (manually of from an application). Please upgrade to PTLib!