Linux Security Hardener

One-command Linux security hardening. Disables root SSH login, sets up UFW firewall with best-practice rules, configures fail2ban for brute-force protection, and audits user permissions. For Ubuntu/Debian servers running OpenClaw.

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Install skill "Linux Security Hardener" with this command: npx skills add laolaoqi/linux-hardener

Linux Security Hardener

Zero-config server hardening for AI agents.

Run one action to audit and harden your Linux server against common attack vectors. Safe defaults — backs up every config before modifying.

Actions

ActionDescription
auditScan current security posture (read-only)
hardenApply hardening measures (SSH key-only, UFW, fail2ban)
rollbackRestore previous config from backups

Features

  • 🔐 SSH: disable root login, key-only auth, change port option
  • 🛡️ UFW: allow only 18792 (OpenClaw), 22 (SSH), rate limiting
  • 🚫 fail2ban: SSH brute-force protection, 5 attempts = 10min ban
  • 📋 Audit report: open ports, user privileges, weak configs
  • 💾 Auto-backup: every change creates a timestamped backup

Pricing

$4.99 — One-time purchase

Source Transparency

This detail page is rendered from real SKILL.md content. Trust labels are metadata-based hints, not a safety guarantee.

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