macOS
brew install arpoisonlocal Homebrew formula metadata
brew
UNIX arp cache update utility. Version 0.7 via Homebrew; verified from local package data.
install
brew install arpoisonlocal Homebrew formula metadata
nix profile install nixpkgs#arpoisonnixpkgs package indexes · pkgs/by-name/ar/arpoison/package.nix · source: api.github.com
overview
UNIX arp cache update utility
history
arpoison is Steve Buer's small Unix ARP cache update utility. Its official site describes it tersely as a Unix ARP cache update utility and distributes a 0.7 source archive; the bundled manual page describes a command that constructs ARP request or reply packets with user-specified hardware and protocol addresses.
The official upstream surface is old-school: a static homepage, a tarball, a dependency note for libnet, and contact information. The 0.7 archive includes source, a README, a Makefile, a GPL license file, and an arpoison.8 manual page dated January 2003. No official HTTP source-control repository was found on the project homepage.
arpoison belongs to the early-2000s packet-construction utility era, when small C programs built on libnet were common tools for network labs and security testing. Its source and manual are focused on one task: generating custom ARP traffic rather than providing a broader scanning, discovery, or intrusion framework.
arpoison's adoption is necessarily narrow. It is useful to administrators, students, and security testers who need controlled ARP cache manipulation on a local network, but it is not a general-purpose network inventory tool or a modern maintained platform.
The package's continued value is mostly archival and practical: when a user needs a tiny utility that emits hand-crafted ARP packets, the package manager can still provide it without requiring a checkout from a live development project.
The bundled README says the program sends a custom ARP reply packet with chosen hardware and protocol address information, relying on ARP's stateless behavior. The manual page documents options for interface, destination IP, source IP, target MAC, source MAC, ARP request mode, packet count, and delay between packets.
In practice, arpoison is used for controlled ARP cache updates and ARP poisoning experiments on local networks. Because it sends forged link-layer traffic, it is a privileged and security-sensitive command rather than a normal user productivity tool.
arpoison is significant mostly as a compact preservation package: one executable, one C source tree, one man page, and an official tarball. It is the sort of security utility where a package database should preserve the real upstream homepage and avoid promoting unrelated mirrors as official repositories.
Its metadata is also a reminder that old security tools often predate today's expectation of GitHub, release feeds, CI, and signed source releases. For this package, the conservative answer is source-backed history plus a null repository.
security posture
narrow executable package without higher-risk signals.
green risk · low confidence · appliance
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
arpoison | cli | global executable |
freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
install metadata
| Package key | brew:arpoison |
|---|---|
| Version | 0.7 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/arpoison |
| Homepage | http://www.arpoison.net/ |
| Upstream docs | http://www.arpoison.net/ |
| License | GPL-2.0-only |
| Source archive | https://dev.gentoo.org/~jsmolic/distfiles/arpoison-0.7.tar.gz |
| Dependencies | libnet |
| Bottle | available (on arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | arpoison |
| Version Scheme | 0 |
| Revision | 1 |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source database matches
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
arpoison
nix profile install nixpkgs#arpoisonsource trail
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View the package source record on GitHub.