# sslsplit を Homebrew, apt, dnf, Nix, pacman でインストール

sslsplit 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:sslsplit
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install sslsplit
```

  証拠: local Homebrew formula metadata

### Linux

- Debian apt (92%):

```sh
sudo apt install sslsplit
```

  証拠: Debian stable package indexes: sslsplit from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

- dnf (92%):

```sh
sudo dnf install sslsplit
```

  証拠: Fedora Rawhide package metadata: sslsplit from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst

- Nix (92%):

```sh
nix profile install nixpkgs#sslsplit
```

  証拠: nixpkgs package indexes: pkgs/by-name/ss/sslsplit/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

- pacman (92%):

```sh
sudo pacman -S sslsplit
```

  証拠: Arch Linux sync databases: sslsplit from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz

## パッケージ情報

- **パッケージキー:** brew:sslsplit
- **パッケージマネージャ:** Homebrew
- **バージョン:** 0.5.5
- **ソース概要:** Man-in-the-middle attacks against SSL encrypted network connections
- **ホームページ:** <https://www.roe.ch/SSLsplit>
- **リポジトリ:** <https://github.com/droe/sslsplit>
- **最終更新:** 2026-07-13T17:31:48+09:00
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- sslsplit (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: 0.5.5
## プロジェクトの歴史と使われ方

SSLsplit is a transparent SSL/TLS interception tool for network forensics, application security analysis, and penetration testing. It is packaged because it combines low-level NAT integration, forged-certificate TLS interception, and forensic logging in a single Unix-style command.

### プロジェクトの歴史

The official project page says SSLsplit is developed by Daniel Roethlisberger and contributors and was first publicly released as 0.4.2 in 2012. Its README says it was inspired by Claes M. Nyberg's mitm-ssl and Moxie Marlinspike's sslsniff, while sharing no source code with them.

SSLsplit is designed to transparently terminate NAT-redirected connections, create a new SSL/TLS connection to the original destination, and log transmitted data. Over time it added defenses against mechanisms that complicate interception, including OCSP handling, HSTS and HPKP header mangling, Expect-CT suppression, and prevention of protocol upgrades such as QUIC, SPDY, HTTP/2, and WebSockets.

### 採用の歴史

The official project page lists package or port availability across FreeBSD, OpenBSD, NetBSD, DragonFly BSD, Homebrew, Arch Linux, Debian, Ubuntu, Gentoo, Fedora/RHEL/CentOS, openSUSE, Mageia, BlackArch, Kali Linux, and related security distributions or appliances. The supplied package metadata also shows Homebrew, Debian, Fedora, Nix, Arch, and Ubuntu packaging.

Its packaging footprint follows from its role in labs and security distributions: users need a reproducible build of a sensitive interception tool with OpenSSL, libevent, libpcap, libnet, NAT engine support, and platform-specific behavior aligned.

### 使われ方

Typical usage requires redirecting traffic with a platform NAT engine, then running sslsplit with proxy specifications such as http, https, tcp, ssl, or autossl, CA certificate/key material, and logging destinations. The tool can write connection logs, content logs, PCAP output, mirrored packets, generated certificates, master secrets, and local process information.

Supported NAT mechanisms in official documentation include FreeBSD pf rdr and divert-to, ipfw fwd, ipfilter rdr; OpenBSD pf rdr-to and divert-to; Linux netfilter REDIRECT and TPROXY; and macOS pf rdr and ipfw fwd.

### パッケージ好きにとっての重要性

SSLsplit is package-nerd significant because it is deeply coupled to OS networking facilities. A useful package is not only the binary; it is the right combination of OpenSSL compatibility, NAT-engine support, privilege behavior, man pages, sample configuration, and logging defaults.

It also belongs to the family of security tools whose value is inseparable from ethical context. Distributions package it for legitimate forensics, testing, and education, but its capability is explicitly man-in-the-middle interception.

### タイムライン

- 2012: SSLsplit 0.4.2 was the first public release.
- 2013: Version 0.4.7 filtered HPKP headers and added HTTP status and content length to connection logs.
- 2014: Versions 0.4.8 through 0.4.10 improved pf support on macOS, added protocol forcing options, and added separate file logging with process information.
- 2016: Version 0.5.0 added generic STARTTLS support through the autossl proxy specification and introduced privilege separation.
- 2018: Version 0.5.4 added PCAP and packet-mirroring content log modes and the sslsplit.conf manual page.
- 2019: Version 0.5.5 fixed packaging and install-path behavior, including SYSCONFDIR-controlled installation of sample config files.

### Related projects

- Official README names mitm-ssl and sslsniff as inspirations.
- Related operational tools include OpenSSL, libevent, libpcap, libnet, platform NAT engines, Wireshark via PCAP or SSLKEYLOGFILE-style outputs, and security distributions such as Kali and BlackArch.

### ソース

- <https://github.com/droe/sslsplit#readme>
- <https://github.com/droe/sslsplit/blob/master/NEWS.md>
- <https://www.roe.ch/SSLsplit>
- input source_facts.package-manager


## セキュリティノート

broad file, network, media, or database tool signal. escape, surveillance, or offensive capability signal.

- **Geiger リスク:** red / 中
- broad file, network, media, or database tool signal
- escape, surveillance, or offensive capability signal

## 他のパッケージマネージャ記録

- Debian apt - sslsplit - 0.5.5-2.1+b1: normalized package name match | Debian stable package indexes: sslsplit from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | transparent and scalable SSL/TLS interception | http://www.roe.ch/SSLsplit
- Nix - sslsplit: normalized package name match | nixpkgs package indexes: pkgs/by-name/ss/sslsplit/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- Ubuntu apt - sslsplit - 0.5.5-2.1build4: normalized package name match | Ubuntu 24.04 LTS package indexes: sslsplit from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | transparent and scalable SSL/TLS interception | http://www.roe.ch/SSLsplit
- dnf - sslsplit - 0.5.5-22.fc45: normalized package name match | Fedora Rawhide package metadata: sslsplit from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | Transparent and scalable SSL/TLS interception | http://www.roe.ch/SSLsplit
- pacman - sslsplit - 0.5.5-3: normalized package name match | Arch Linux sync databases: sslsplit from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | Tool for man-in-the-middle attacks against SSL/TLS encrypted network connections | https://www.roe.ch/SSLsplit


## Combined YAML source

View the package source record on GitHub. [combined/sslsplit.yml](https://github.com/mxcl/pkgdb/blob/main/combined/sslsplit.yml)


## ソース

- pkg.so package database
- Geiger risk classifier
- curated package history
- pkgdb category and tag curation
- external package-manager database matches
- cross-ecosystem install command graph
