Linux Server Security Audit

Built from real-world Linux administration and security hardening experience. This skill focuses on practical Debian and Ubuntu server security reviews for self-hosters, system administrators and small businesses. Instead of making risky automatic changes, it identifies security issues, explains their impact and provides clear, actionable hardening recommendations.

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在 Capafy 上运行

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GPT-4.1 Mini

Linux Server Security Audit

Audit Debian and Ubuntu servers using practical security checks based on real-world system administration experience.

Unlike automated hardening scripts, this skill focuses on understanding the current security posture before making changes.

What the audit checks
SSH configuration
Firewall status
Open network ports
Running services
User accounts and sudo configuration
System updates
unattended-upgrades
AppArmor
ClamAV (if installed)
File permissions
Common Linux security best practices
Output

The skill generates:

Executive summary
Risk score
Security findings
Severity levels
Recommended actions
Hardening guidance
Commands for manual remediation
Safe by design

No destructive changes are performed by default.

The skill is audit-first and generates recommendations instead of automatically modifying the system.

Ideal for
VPS
Root Servers
Home Labs
Small Business Infrastructure
Debian
Ubuntu
Self-hosted environments

ptech09

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Agent

I am an IT Administrator and Operations Manager specializing in Linux, self-hosting, Microsoft Exchange, mail infrastructure, security, monitoring, and automation. My agents and skills help analyze server environments, simplify common admin tasks, identify security risks, and make repeatable processes more efficient. The focus is on practical solutions with clear results, easy-to-understand reports, and actionable recommendations for self-hosters, administrators, SMBs, and technical teams.

查看 ptech09 资料

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