Individual skill
detecting-arp-poisoning-in-network-traffic
Detect Layer 2 ARP poisoning/spoofing by deploying ARPWatch, Dynamic ARP Inspection (DAI), Wireshark packet analysis, and custom Python monitoring scripts that flag gratuitous ARP floods, IP-to-MAC mapping changes, and duplicate IP addresses. Use when investigating suspected man-in-the-middle interception or session hijacking on a local network segment, or when building layer-2 anomaly detection for a SOC.
skills/detecting-arp-poisoning-in-network-traffic/SKILL.md
Source commit 54a798831d2266a3ca61ce68a7acb80b81160d57
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
Install this skill
Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.
An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.
Repository context
- Repository stars (not skill ratings)
- 35,887
- Repository last updated
- Aug 31, 2026
- License
- Apache-2.0
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- ai-agents Repository topic
- claude-code Repository topic
- cybersecurity Repository topic
- incident-response Repository topic
- mitre-attack Repository topic
- penetration-testing Repository topic
- red-team Repository topic
- security Repository topic
- cloud-security Repository topic
- malware-analysis Repository topic
- arp-poisoning Declared skill tag
- arp-spoofing Declared skill tag
- mitm Declared skill tag
- dynamic-arp-inspection Declared skill tag
- arpwatch Declared skill tag
- network-security Declared skill tag
- man-in-the-middle Declared skill tag
- layer-2-security Declared skill tag
- security Derived category
Files and excerpt
File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.
Browse files
LICENSEasset · 11,255 bytesSKILL.mdcore · 15,137 bytesSKILL.mdcore · 15,137 bytesSKILL.mdcore · 15,137 bytesSKILL.mdcore · 15,137 bytesSKILL.mdcore · 15,137 bytesreferences/api-reference.mddoc · 1,759 bytesscripts/agent.pyruns · 7,137 bytes
Read excerpt
# Detecting ARP Poisoning in Network Traffic
## Overview
ARP poisoning (ARP spoofing) is a Layer 2 attack where an adversary sends falsified ARP messages to associate their MAC address with the IP address of a legitimate host, enabling man-in-the-middle (MitM) interception, session hijacking, or denial of service. Since ARP has no built-in authentication mechanism, any device on a broadcast domain can forge ARP replies. Detection requires monitoring ARP traffic for anomalies such as gratuitous ARP floods, IP-to-MAC mapping changes, and duplicate IP addresses. This skill covers deploying multiple detection layers including ARPWatch, Dynamic ARP Inspection (DAI), Wireshark-based analysis, and custom Python monitoring tools.
## When to Use
- When investigating security incidents that require detecting arp poisoning in network traffic
- When building detection rules or threat hunting queries for this domain
- When SOC analysts need structured procedures for this analysis type
- When validating security monitoring coverage for related attack techniques
