harden
VPS security auditing and hardening
What this skill does
# VPS Hardening Security auditing and automated hardening for remote servers. ## Commands ### `/harden audit <host>` Run security audit against a server. Checks: - System updates - Auto-updates configuration - SSH root login status - Password authentication - Firewall status - Fail2ban status - System uptime - Listening services - Sudo user configuration ### `/harden fix <host>` Apply safe fixes that won't lock you out: - Install system updates - Enable unattended-upgrades - Configure UFW firewall - Install and enable fail2ban - Set SSH MaxAuthTries ### `/harden emergency <host>` Quick 10-minute hardening for new servers: - Full system update - Firewall setup - Fail2ban installation - Root password lock ### `/harden report <host>` Generate markdown security report. ## Options | Option | Description | |--------|-------------| | `--user=NAME` | SSH user (default: root) | | `--dry-run` | Preview changes without applying | ## Examples ``` /harden audit 192.168.1.100 /harden fix myserver.com --user=admin /harden emergency vps.example.com --dry-run /harden report server.io > security-report.md ``` ## Security Checks | Check | Pass Criteria | |-------|---------------| | System Updates | 0 pending updates | | Auto Updates | unattended-upgrades installed | | Root Login | PermitRootLogin no | | Password Auth | PasswordAuthentication no | | Firewall | UFW active or iptables configured | | Fail2ban | Service running | | Uptime | < 90 days | | Services | < 10 listening ports | | Sudo Users | At least one non-root sudo user | | MaxAuthTries | Set to 3 or less |
Related in Security
mac-ops
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a11y-audit
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erpclaw
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assess
IncludedAssesses and rates quality 0-10 across multiple dimensions (correctness, maintainability, security, performance, testability, simplicity) with pros/cons analysis. Compares against project conventions and prior decisions from memory. Produces structured evaluation reports with actionable improvement suggestions. Use when evaluating code, designs, architectures, or comparing alternative approaches.
spring-boot-security-jwt
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code-hardcode-audit
IncludedDetect hardcoded values, magic numbers, and leaked secrets. TRIGGERS - hardcode audit, magic numbers, PLR2004, secret scanning.