Linux Security

Security auditing and monitoring scripts for Linux systems

Security assessment and monitoring tools for Linux environments. These scripts help identify vulnerabilities, monitor authentication attempts, and maintain security compliance.

Scripts in this Category

Tools for:

  • SSH authentication monitoring
  • System security auditing
  • SSL certificate management
  • Vulnerability assessment
  • Compliance checking
  • Security log analysis

Use Cases

Continuous Monitoring:

  • Schedule via cron for automated checks
  • Monitor failed login attempts
  • Track certificate expiration
  • Detect configuration drift

Security Assessments:

  • Pre-deployment validation
  • Compliance auditing
  • Penetration test preparation
  • Post-incident reviews

Incident Response:

  • Identify attack patterns
  • Analyze authentication failures
  • Document security posture
  • Generate compliance reports

Requirements

Most security scripts require:

  • Root or sudo privileges for full system access
  • Read access to system logs
  • Standard Linux utilities (grep, awk, openssl)
  • Network connectivity (for external checks)

Exit Codes

Security scripts follow standard exit code conventions:

  • 0 - Success, no issues found
  • 1 - General errors or moderate findings
  • 2 - Critical issues detected
  • 3-4 - Severity-based status codes

This allows easy integration with monitoring systems and automation workflows.

Support

For issues or questions about these scripts, open an issue on GitHub.