Use when detecting port scans and adding dynamic blocks.
Scanned 9/10/2026
Install to Claude Code
Skills Directorynpx -y skills add LoopyLuci/Skills --skill port-scanner-detection --agent claude-codeInstalls into .claude/skills of the current project.
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---
name: port-scanner-detection
title: Port Scanner Detection
description: Use when detecting port scans and adding dynamic blocks.
category: networking
tags: [port-scan, detection, security, dynamic-block, rust]
---
# Port Scanner Detection
**Trigger**: Use when implementing port scan detection and throttling.
**Libraries**: `pcap`, `pnet`, `dashmap` (concurrent state)
**Implementation**: Sliding window: count unique ports per source IP within time window. Configurable thresholds (N ports in M seconds). TCP flag anomaly detection (SYN-only, FIN-only, X-mas, NULL). Dynamic block: auto-add nftables/WFP rule with configurable duration. Rate limiting option. Whitelist trusted scanners.
**Connected**: `packet-capture-engine`, `firewall-rules-engine`, `connection-monitor`, `gpu-packet-classifier`
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