# Installer fwknop avec Homebrew, apk, dnf, MacPorts, Nix, pacman, zypper, apt

Consultez les chemins d'installation, exécutables, métadonnées et notes de sécurité de fwknop pour les workflows d'agents IA.

## installation

```sh
sudo av install brew:fwknop
```

Commandes d'installation supplémentaires:

### macOS

- Homebrew (100%):

```sh
brew install fwknop
```

  Preuve: local Homebrew formula metadata

- MacPorts (94%):

```sh
sudo port install fwknop
```

  Preuve: MacPorts ports tree: net/fwknop/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1

### Linux

- apk (92%):

```sh
sudo apk add fwknop
```

  Preuve: Alpine Linux edge package indexes: fwknop from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz

- dnf (92%):

```sh
sudo dnf install fwknop
```

  Preuve: Fedora Rawhide package metadata: fwknop 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#fwknop
```

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

- pacman (92%):

```sh
sudo pacman -S fwknop
```

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

- zypper (92%):

```sh
sudo zypper install fwknop
```

  Preuve: openSUSE Tumbleweed package metadata: fwknop from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst

- Debian apt (92%):

```sh
sudo apt install fwknop-apparmor-profile
```

  Preuve: Debian stable package indexes: fwknop-apparmor-profile from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

## Faits du paquet

- **Clé du paquet:** brew:fwknop
- **Gestionnaire de paquets:** Homebrew
- **Version:** 2.6.11
- **Résumé source:** Single Packet Authorization and Port Knocking
- **Page d'accueil:** <https://www.cipherdyne.org/fwknop/>
- **Dépôt:** <https://github.com/mrash/fwknop>
- **Dernière mise à jour:** 2026-06-22T14:03:23-07:00
- **Généré:** 2026-08-03T19:37:03+00:00

## exécutables

- fwknop (alias)
- fwknopd (alias)

## Comportement d'installation

- Bouteille: non disponible

## Version et fraîcheur

- page générée: 2026-08-03
- version du gestionnaire: 2.6.11
## Historique du projet et usages

fwknop, the FireWall KNock OPerator, is a security tool for Single Packet Authorization. It conceals services behind a default-drop firewall and temporarily opens access only after a valid encrypted, authenticated, non-replayed packet is observed.

### Historique du projet

The official project page says fwknop began in 2004 as a port-knocking implementation and was the first tool to combine traditional encrypted port knocking with passive OS fingerprinting. The project later emphasized Single Packet Authorization as a stronger successor to port knocking.

The current C implementation includes libfko, client and server applications, and support for Linux iptables and firewalld, OpenBSD PF, FreeBSD and macOS ipfw, and custom scripts. The README describes the project state around the 2.5 release in July 2013, when libfko, the client, and fwknopd server formed the core distribution.

The official site continues to publish releases, with the project page listing 2.6.11 as the latest release and the blog showing a 2024 software release post.

### Historique d'adoption

fwknop became known in the security community through port-knocking and SPA discussions. The official project page notes two Slashdot appearances in 2004 and 2005, one about combining port knocking with OS fingerprinting and another about going beyond port knocking with single-packet access.

Package metadata shows fwknop in multiple Unix-like package ecosystems, and upstream documentation covers Linux, BSD, macOS, Windows under Cygwin, Android clients, and graphical clients. Its adoption is strongest among administrators who want SSH or internal services invisible to ordinary scans.

### Modes d'utilisation

A typical deployment generates encryption and HMAC keys, stores client settings in `~/.fwknoprc`, places shared authorization material in `/etc/fwknop/access.conf`, starts `fwknopd`, and keeps the protected service blocked by default firewall policy until a valid SPA packet arrives.

The tutorial focuses on SSH concealment, NAT gateway use, cloud environments, replay protection, HMAC authenticated encryption, and the operational tradeoff of needing both a client and a daemon.

### Pourquoi les passionnés de paquets s'y intéressent

fwknop is significant because it turns firewall access into a packageable client-server protocol with config files, manpages, libraries, distro packages, and alternate clients. It is not just a security script; it is an ecosystem around SPA packets and firewall rule orchestration.

For maintainers, fwknop is also a reminder that security packages often include sensitive config defaults, key files, init or service integration, firewall backend differences, and compatibility with old protocol modes.

### Chronologie

- 2004: Project begins as a port-knocking implementation.
- 2004: Project receives Slashdot attention for encrypted port knocking with OS fingerprinting.
- 2005: Single Packet Authorization direction receives further Slashdot attention.
- 2006: Single Packet Authorization with fwknop paper published in USENIX ;login: Magazine.
- 2011: GitHub repository created.
- 2013: README describes the 2.5 release with libfko, client, and server applications.
- 2016: Comprehensive tutorial updated.
- 2024: Official site announces fwknop 2.6.11.

### Related projects

- fwknop is closely related to port-knocking tools but positions Single Packet Authorization as a stronger design.
- The official README names fwknop-gui and Android Fwknop2 as related clients.
- Other Cipherdyne projects listed near fwknop include psad, fwsnort, gpgdir, and IPTables parsing or chain-management modules.

### Sources

- <https://api.github.com/repos/mrash/fwknop>
- <https://github.com/mrash/fwknop>
- <https://raw.githubusercontent.com/mrash/fwknop/master/README.md>
- <https://www.cipherdyne.org/fwknop>
- <https://www.cipherdyne.org/fwknop/docs/SPA.html>
- <https://www.cipherdyne.org/fwknop/docs/fwknop-tutorial.html>


## Notes de sécurité

narrow executable package without higher-risk signals.

- **Risque Geiger:** vert / faible
- 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: ~/.fwknoprc, /etc/fwknop/fwknopd.conf, /etc/fwknop/access.conf

## Credential files

- Unix: ~/.fwknoprc, /etc/fwknop/access.conf
## Autres enregistrements de gestionnaires de paquets

- Debian apt - fwknop-apparmor-profile - 2.6.11-2: normalized package name match | Debian stable package indexes: fwknop-apparmor-profile from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | FireWall KNock OPerator - Apparmor profile | https://www.cipherdyne.com/fwknop/
- Debian apt - fwknop-client - 2.6.11-2+b1: normalized package name match | Debian stable package indexes: fwknop-client from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | FireWall KNock OPerator client side - C version | https://www.cipherdyne.com/fwknop/
- Debian apt - fwknop-server - 2.6.11-2+b1: normalized package name match | Debian stable package indexes: fwknop-server from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | FireWall KNock OPerator server side - C version | https://www.cipherdyne.com/fwknop/
- Debian apt - libfko-doc - 2.6.11-2: normalized package name match | Debian stable package indexes: libfko-doc from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | FireWall KNock OPerator - documentation | https://www.cipherdyne.com/fwknop/
- Debian apt - libfko-perl - 2.6.11-2+b1: normalized package name match | Debian stable package indexes: libfko-perl from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | FireWall KNock OPerator - Perl module | https://www.cipherdyne.com/fwknop/
- Debian apt - libfko3-dev - 2.6.11-2+b1: normalized package name match | Debian stable package indexes: libfko3-dev from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | FireWall KNock OPerator - development library | https://www.cipherdyne.com/fwknop/
- Debian apt - libfko3t64 - 2.6.11-2+b1: normalized package name match | Debian stable package indexes: libfko3t64 from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | FireWall KNock OPerator - shared library | https://www.cipherdyne.com/fwknop/
- Nix - fwknop: normalized package name match | nixpkgs package indexes: pkgs/by-name/fw/fwknop/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- Ubuntu apt - fwknop-apparmor-profile - 2.6.10-20.2build3: normalized package name match | Ubuntu 24.04 LTS package indexes: fwknop-apparmor-profile from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | FireWall KNock OPerator - Apparmor profile | https://www.cipherdyne.com/fwknop/
- Ubuntu apt - fwknop-client - 2.6.10-20.2build3: normalized package name match | Ubuntu 24.04 LTS package indexes: fwknop-client from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | FireWall KNock OPerator client side - C version | https://www.cipherdyne.com/fwknop/
- Ubuntu apt - fwknop-server - 2.6.10-20.2build3: normalized package name match | Ubuntu 24.04 LTS package indexes: fwknop-server from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | FireWall KNock OPerator server side - C version | https://www.cipherdyne.com/fwknop/
- Ubuntu apt - libfko-doc - 2.6.10-20.2build3: normalized package name match | Ubuntu 24.04 LTS package indexes: libfko-doc from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | FireWall KNock OPerator - documentation | https://www.cipherdyne.com/fwknop/
- Ubuntu apt - libfko-perl - 2.6.10-20.2build3: normalized package name match | Ubuntu 24.04 LTS package indexes: libfko-perl from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | FireWall KNock OPerator - Perl module | https://www.cipherdyne.com/fwknop/
- Ubuntu apt - libfko3-dev - 2.6.10-20.2build3: normalized package name match | Ubuntu 24.04 LTS package indexes: libfko3-dev from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | FireWall KNock OPerator - development library | https://www.cipherdyne.com/fwknop/
- Ubuntu apt - libfko3t64 - 2.6.10-20.2build3: normalized package name match | Ubuntu 24.04 LTS package indexes: libfko3t64 from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | FireWall KNock OPerator - shared library | https://www.cipherdyne.com/fwknop/
- apk - fwknop - 2.6.11-r2: normalized package name match | Alpine Linux edge package indexes: fwknop from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Single Packet Authorization (SPA) implementation | https://cipherdyne.org/fwknop/


## Combined YAML source

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


## Sources

- 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