GNU Gatekeeper 2.3

GNU Gatekeeper (GnuGk) is an open-source H.323 gatekeeper and call-routing engine developed by the GNU Gatekeeper project (gnugk.org). It provides the core control services required to build reliable, scalable H.323 voice and video networks, handling endpoint registration, admission control, and intelligent call routing. With robust NAT traversal and policy controls, GnuGk helps enterprises, service providers, and educational institutions manage and secure H.323 communications across complex networks.

Key capabilities:

• Standards-compliant H.323 gatekeeper and proxy functions
• Registration, Admission, and Status (RAS) handling for endpoints, gateways, and MCUs
• Flexible dial plan and policy-based call routing (including multi-zone and neighbor gatekeeper setups)
• NAT and firewall traversal with H.460.18/19 support
• Bandwidth management, call admission control, and rate limiting
• Authentication and authorization options, including H.235-based security features
• Detailed accounting with Call Detail Records (CDRs), plus RADIUS and SQL integration
• Routed and direct signaling modes for granular control of call paths
• High availability options through redundant and distributed gatekeeper configurations
• Cross-platform deployment, commonly on Linux and Windows

Typical use cases:

• Centralized control and routing for enterprise H.323 video conferencing
• Service provider backbones for large-scale H.323 call management
• Interconnection of H.323 endpoints, gateways, and multipoint control units across sites
• Secure traversal of H.323 traffic through NATs and firewalls

License: GNU General Public License (GPL)
Developer: gnugk.org

GNU Gatekeeper is developed by gnugk.org. The most popular versions of this product among our users are: 2.2 and 2.3. The name of the program executable file is GnuGk.exe.