arp-scan ☆
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Description:
ARP scanning and fingerprinting tool
Type: Formula  |  Latest Version: 1.10.0@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: Networking
Tags: networking security scanning discovery cli
Install: brew install arp-scan
About:
arp-scan is a command-line tool that sends ARP requests to discover active hosts on a local network. It can identify all IPv4 devices connected to a subnet, even those blocking other port scanning methods. The tool also attempts to fingerprint operating systems by analyzing ARP response characteristics.
Key Features:
  • Fast and low-level network discovery using ARP requests
  • Operating system fingerprinting via vendor ID and MAC address analysis
  • Customizable packet generation and output formatting
  • Supports parsing of nmap-style MAC address vendor files
Use Cases:
  • Network inventory and asset discovery for system administrators
  • Security auditing to identify unauthorized devices on a network
  • Troubleshooting connectivity issues by verifying host presence
Alternatives:
  • nmap – More comprehensive scanning suite that includes ARP discovery but is heavier
  • arping – Focuses on host liveness verification rather than bulk network scanning
License: GPL-3.0-or-later AND BSD-3-Clause AND ISC
Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, arm64_monterey, sonoma, ventura, monterey, arm64_linux, x86_64_linux
Version History
Detected Version Rev Change Commit
Sep 13, 2025 8:27am 0 VERSION_BUMP 5ba7f634
Aug 21, 2024 6:24am 0 VERSION_BUMP 04414141
Dec 14, 2022 12:55am 0 VERSION_BUMP bcd7d3d2
Dec 14, 2022 12:55am 0 VERSION_BUMP fc0a8c34
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