killswitch を Homebrew でインストール

プロジェクトリンク

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コマンドとエイリアス

• killswitch

プロジェクトの歴史

The GitHub repository was created in 2016, with a 0.7.0 GitHub release published on 2019-03-09. The README explains the core design: write temporary `pf` rules to `/tmp/killswitch.pf.conf`, load them with `pfctl`, and avoid modifying the system default `/etc/pf.conf`.

採用の歴史

killswitch has narrower packaging than the other projects in this batch; the Homebrew formula documents it as a macOS VPN kill switch, and the project README focuses on local builds and root-required enable/disable commands.

使われ方

Users run `sudo killswitch -e` to enable firewall rules, `sudo killswitch -d` to disable and restore default rules, or `killswitch --print` to inspect rules before applying them.

パッケージ好きにとっての重要性

killswitch is notable as a small packageable security utility that exposes macOS `pf` behavior through a single CLI, useful for users who want a provider-independent VPN leak guard rather than an application-specific setting.

タイムライン

• 2016: vpn-kill-switch/killswitch repository created on GitHub.
• 2019: 0.7.0 release published.
• 2020: 0.7.1 and v0.7.2 releases published.
• 2023: v0.7.3 release published.
• 2026: 0.8.x releases published from February through April.

Related projects

• The README links the design to the Packet Filter firewall documented by FreeBSD and to macOS networking tools such as `pfctl`, `sysctl`, `netstat`, `scutil`, and `ifconfig`.

ソース

• https://docs.freebsd.org/en/books/handbook/firewalls/#firewalls-pf
• https://formulae.brew.sh/formula/killswitch
• https://github.com/vpn-kill-switch/killswitch
• https://github.com/vpn-kill-switch/killswitch/releases
• https://vpn-kill-switch.com/post/how-it-works