# Security Policy

## 🔒 Security Overview

The NAS Setup Script takes security seriously. This document outlines our security policy, how to report vulnerabilities, and our commitment to maintaining a secure codebase.

## 🚨 Reporting Vulnerabilities

If you discover a security vulnerability in this project, please help us by reporting it responsibly.

### 📧 How to Report

**Please DO NOT report security vulnerabilities through public GitHub issues.**

Instead, please report security vulnerabilities by emailing:
- **Email:** moin@linuxcommand.dev
- **Subject:** `[SECURITY] NAS Setup Script Vulnerability Report`

### ⏰ Response Timeline

We will acknowledge your report within 48 hours and provide a more detailed response within 7 days indicating our next steps.

We will keep you informed about our progress throughout the process of fixing the vulnerability.

### 📋 What to Include

Please include the following information in your report:
- A clear description of the vulnerability
- Steps to reproduce the issue
- Potential impact and severity
- Any suggested fixes or mitigations
- Your contact information for follow-up

## 🛡️ Security Considerations

### Current Security Features

The NAS Setup Script includes several security measures:

- **Input Validation:** Comprehensive validation of all user inputs
- **SSH Hardening:** Ed25519 key generation and secure configurations
- **Firewall Management:** IPv4/IPv6 firewall rules with UFW/Firewalld
- **Intrusion Detection:** Fail2ban integration for brute-force protection
- **Audit Logging:** System auditing with auditd
- **Access Control:** Mandatory Access Control (AppArmor/SELinux)
- **Secure Defaults:** Conservative security settings by default
- **Distribution Detection:** Robust 5-method fallback system with container environment detection
- **Version Validation:** Advanced regex parsing and bc calculator for precise version comparisons
- **Unit Testing:** Comprehensive test suite (66+ test cases) ensuring code reliability
- **Container Security:** Detection and warnings for Docker/Podman/LXC/WSL environments

### Known Limitations

- **Root Access Required:** The script requires root/sudo privileges for system configuration
- **Network Dependencies:** Internet access required for package downloads
- **Service Exposure:** Configured services may expose ports to networks
- **User Responsibility:** End users are responsible for their network security

## 🔧 Security Updates

Security updates will be released as patch versions following semantic versioning:
- **Critical vulnerabilities:** Immediate patch release
- **High severity:** Within 7 days
- **Medium/Low severity:** Included in next minor release

## 📚 Best Practices for Users

### Before Installation
- Review the code and understand what the script does
- Test in a virtualized environment first
- Backup important data before running
- Ensure you have console access in case of issues

### After Installation
- Change default passwords immediately
- Review firewall rules and service configurations
- Monitor system logs regularly
- Keep the system updated with security patches
- Use strong, unique passwords for all services

### Network Security
- Place the NAS in a secure network segment
- Use VPN for remote access when possible
- Implement network segmentation
- Regularly audit network access logs

## 🏷️ Vulnerability Classification

We use the following severity levels:

- **Critical:** Remote code execution, privilege escalation, data loss
- **High:** Authentication bypass, significant data exposure
- **Medium:** Information disclosure, DoS attacks
- **Low:** Minor issues with limited impact

## 🤝 Security Hall of Fame

We appreciate security researchers who help make this project safer. With your permission, we'll acknowledge your contribution in our security hall of fame.

## 📞 Contact

For security-related questions or concerns:
- **Security Issues:** Use the reporting process above
- **General Security Questions:** Create a GitHub Discussion
- **Documentation Issues:** Submit a GitHub Issue

## 📜 Disclaimer

This software is provided "as is" without warranty. Users are responsible for their own security practices and should evaluate the suitability of this software for their specific use case.

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*Last updated: October 2025*</content>
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