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The GNU Gatekeeper (abbreviated as GnuGk) is an open-sourced project that implements an H.323 Gatekeeper based on the OpenH323 or H323Plus stack. A gatekeeper provides address translation, admissions control, call routing, authorization and accounting services to an H.323 system defined on the H.323 standard by ITU-T. ==Features== GnuGk contains a rich set of features, including: * Cross-platform, including Linux, Windows, OS X, Solaris, FreeBSD, OpenBSD and NetBSD * A policy-based flexible routing mechanism * Calling and called numbers rewriting, including CLI rewriting * Full H.323 proxy, including Real-time Transport Protocol (RTP) and RTP Control Protocol (RTCP) media channels, and T.120 data channels * NAT traversal using a number of protocols, including H.460.17, H.460.18 and H.460.19 * IPv6 support (incl. IPv4-IPv6 proxying) * LDAP directory support (H.350) * Call retry-failover * Clustering support by neighbors, parent-child, alternates GK * Transmission Control Protocol (TCP) status port for monitoring and external call routing * H.235 security * Accounting and call authorization via SQL database, RADIUS * ENUM support 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「GNU Gatekeeper」の詳細全文を読む スポンサード リンク
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