detecting-arp-poisoning-in-network-traffic

Detect real-time ARP poisoning and alert on spoofing indicators.

Updated Apr 23, 2026
One-click install
npx skills add https://github.com/YukiIto1999/ctf-sleuth --skill detecting-arp-poisoning-in-network-traffic
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: detecting-arp-poisoning-in-network-traffic
Source: https://github.com/YukiIto1999/ctf-sleuth/tree/main/.claude/skills/detecting-arp-poisoning-in-network-traffic
Command: npx skills add https://github.com/YukiIto1999/ctf-sleuth --skill detecting-arp-poisoning-in-network-traffic

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires scapy, and includes scripts (resource) and references (resource) components.

What problem does it solve?

ARP poisoning is a network-layer attack where attackers associate their MAC with legitimate IPs to enable MitM. This Skill provides a multi-layered approach to detect and respond to ARP spoofing using ARPWatch, Dynamic ARP Inspection, Wireshark filters, and a Python detector.

Core Features & Use Cases

  • Deploy ARPWatch for continuous monitoring across the network.
  • Validate ARP integrity with Dynamic ARP Inspection and DHCP snooping prerequisites.
  • Use Wireshark detection filters to surface suspicious ARP activity.
  • Run a Python ARP monitor to detect MAC/IP changes, gratuitous ARP, and spoofing patterns in real time.
  • Apply in SOC investigations, enterprise networks, or lab environments to identify MitM attempts and protect gateway traffic.

Quick Start

Start real-time ARP poisoning detection on your network interface using the ARPWatch/DAI/Wireshark workflow and optional Python monitor.

Frequently Asked Questions about detecting-arp-poisoning-in-network-traffic

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I detect ARP poisoning in real-time network traffic?

Detect ARP poisoning by deploying ARPWatch for continuous monitoring and running a Python detector to identify MAC/IP inconsistencies and MitM attempts in real time. This Skill coordinates multiple tools to surface spoofing indicators on local networks.

What causes ARP spoofing and how does a man-in-the-middle attack work?

ARP spoofing occurs when an attacker associates their MAC address with legitimate IP addresses to intercept traffic. This enables MitM attacks by redirecting network traffic through the attacker's machine, which ARP detection tools identify via gratuitous ARP floods and MAC/IP mismatches.

Can I analyze offline PCAP files for ARP spoofing indicators?

Yes, you can analyze offline PCAP files for ARP spoofing indicators using the Python detector and Wireshark filters. This Skill supports both live network environments and offline analysis to surface suspicious ARP activity and MAC/IP changes.

Do I need Dynamic ARP Inspection and DHCP snooping to validate ARP integrity?

Yes, Dynamic ARP Inspection requires DHCP snooping prerequisites to validate ARP integrity on enterprise networks. This Skill coordinates DAI checks alongside ARPWatch and Wireshark filters to provide multi-layered spoofing detection.

Does this ARP detection approach work with Wireshark filters?

Yes, this approach works with Wireshark detection filters to surface suspicious ARP activity. The Skill integrates Wireshark filters alongside ARPWatch, Dynamic ARP Inspection, and a Python detector for comprehensive ARP poisoning detection.

What are the limitations of using ARPWatch for network security monitoring?

ARPWatch provides continuous monitoring but should be combined with Dynamic ARP Inspection and a Python detector for comprehensive coverage. This Skill coordinates multiple tools because ARPWatch alone may not surface all gratuitous ARP floods and spoofing patterns.