# jailkit を Homebrew, apt, MacPorts でインストール jailkit のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。 ## インストール ```sh sudo av install brew:jailkit ``` 追加のインストールコマンド: ### macOS - Homebrew (100%): ```sh brew install jailkit ``` 証拠: local Homebrew formula metadata - MacPorts (94%): ```sh sudo port install jailkit ``` 証拠: MacPorts ports tree: security/jailkit/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ### Linux - Debian apt (92%): ```sh sudo apt install jailkit ``` 証拠: Debian stable package indexes: jailkit from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz ## パッケージ情報 - **パッケージキー:** brew:jailkit - **パッケージマネージャ:** Homebrew - **バージョン:** 2.23 - **ソース概要:** Utilities to create limited user accounts in a chroot jail - **ホームページ:** - **生成日時:** 2026-08-03T19:37:03+00:00 ## 実行可能ファイル - jk_check (エイリアス) - jk_chrootlaunch (エイリアス) - jk_chrootsh (エイリアス) - jk_cp (エイリアス) - jk_init (エイリアス) - jk_jailuser (エイリアス) - jk_list (エイリアス) - jk_lsh (エイリアス) - jk_socketd (エイリアス) - jk_uchroot (エイリアス) - jk_update (エイリアス) ## インストール挙動 - Bottle: 利用不可 ## バージョンと鮮度 - ページ生成日: 2026-08-03 - マネージャ版: 2.23 ## プロジェクトの歴史と使われ方 Jailkit is a Unix security toolkit for creating and maintaining chroot jails for users, shells, and daemons. It is an older, conservative package whose value is automation around a risky primitive: `chroot`. ### プロジェクトの歴史 The project page and man page credit Olivier Sessink and carry copyright years beginning in 2003. Jailkit was built to automate repeated chroot setup tasks, including copying binaries and libraries into a jail, limiting commands through a restricted shell, checking jail integrity, and forwarding logs from inside a jail. The project has stayed intentionally narrow. The homepage emphasizes stable, security-focused behavior: utilities abort when configuration or environment checks are not secure, and syslog messages explain what failed. Maintenance releases in 2019 and 2021 focused on Python 3 compatibility, `jk_update`, `jk_init`, and man-page cleanup rather than broad feature expansion. ### 採用の歴史 The homepage states that Jailkit is used in network security appliances, large enterprise and ISP internet servers, smaller companies, and private deployments for securing CVS, SFTP, shell, and daemon processes. Homebrew API data available during this enrichment recorded 142 installs over 365 days, which matches a specialized system-administration tool with long tail usage. ### 使われ方 Administrators use Jailkit to initialize a jail, copy only the commands and libraries needed for a task, move users into the jail, restrict allowed commands through `jk_lsh`, and check common jail security mistakes with `jk_check`. The man page stresses that writable system directories, setuid programs, and root privileges inside a jail can defeat the intended isolation. ### パッケージ好きにとっての重要性 Jailkit matters to package nerds because it packages institutional Unix hardening lore into named commands: `jk_init`, `jk_cp`, `jk_chrootsh`, `jk_lsh`, `jk_jailuser`, `jk_check`, and friends. It is not glamorous, but it turns chroot from a hand-built directory-tree ritual into repeatable system administration. ### タイムライン - 2003: Project copyright and man-page history begin under Olivier Sessink. - 2019: Jailkit 2.21 added full Python 3 compatibility and removed the long-deprecated `jk_addjailuser` utility. - 2021: Jailkit 2.22 fixed Python 3 compatibility in `jk_update` and improved `jk_init.ini` defaults. - 2021: Jailkit 2.23 fixed `jk_init` edge cases and cleaned up man-page locations. - 2026: The project page documented non-exposure to CVE-2026-23268/CVE-2026-23269 because Jailkit exits when required system calls fail or are not permitted. ### Related projects - Jailkit is related to the Unix `chroot(2)` facility, OpenSSH restricted SFTP setups, limited shells, rsync/scp/CVS jail deployments, and OS-level isolation mechanisms. Unlike containers, its focus is small, explicit filesystem jails for accounts and daemons. ### ソース - - - - - ## セキュリティノート narrow executable package without higher-risk signals. - **Geiger リスク:** グリーン / 低 - narrow executable package without higher-risk signals ## Configuration and credential file locations These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval. ## Configuration files - Unix: /etc/jailkit/, JAIL/etc/jailkit/ ## 他のパッケージマネージャ記録 - Debian apt - jailkit - 2.23-2+b1: normalized package name match | Debian stable package indexes: jailkit from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | tools to generate chroot jails easily | https://olivier.sessink.nl/jailkit/ - Ubuntu apt - jailkit - 2.23-2: normalized package name match | Ubuntu 24.04 LTS package indexes: jailkit from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | tools to generate chroot jails easily | https://olivier.sessink.nl/jailkit/ - MacPorts - jailkit: normalized package name match | MacPorts ports tree: security/jailkit/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ## Combined YAML source View the package source record on GitHub. [combined/jailkit.yml](https://github.com/mxcl/pkgdb/blob/main/combined/jailkit.yml) ## ソース - pkg.so package database - Geiger risk classifier - curated configuration and credential file locations - curated package history - pkgdb category and tag curation - external package-manager database matches - cross-ecosystem install command graph