Fail2Ban intrusion prevention system reference. Covers jail configuration, custom regex filters, testing with fail2ban-regex, progressive banning, SSH/Nginx/WordPress protection, ban/unban management, monitoring, and troubleshooting.
Scanned 9/7/2026
Install to Claude Code
Skills Directorynpx -y skills add bytesagain/ai-skills --skill fail2ban --agent claude-codeInstalls into .claude/skills of the current project.
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---
name: fail2ban
version: 1.0.0
description: >
Fail2Ban intrusion prevention system reference. Covers jail
configuration, custom regex filters, testing with fail2ban-regex,
progressive banning, SSH/Nginx/WordPress protection, ban/unban
management, monitoring, and troubleshooting.
author: BytesAgain
homepage: https://bytesagain.com
source: https://github.com/bytesagain/ai-skills
tags: [fail2ban, security, firewall, intrusion-prevention, linux, ssh]
---
# Fail2Ban Reference
Log-based intrusion prevention system.
## Commands
| Command | Description |
|---------|-------------|
| `intro` | Overview, concepts |
| `config` | Jails, actions, progressive |
| `filters` | Custom filters, testing |
| `management` | Status, monitoring, debug |
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