This project follows security best practices for credential management and authentication.

• Automatic Password Validation: All passwords are validated for strength at startup
• Minimum Requirements: 12 characters minimum length
• Weak Pattern Detection: Rejects common weak patterns (e.g., "password", "admin", "123456", "CHANGE_THIS")
• Auto-Generation: Setup script generates cryptographically secure passwords using Python's secrets module
• Environment-Based: Passwords stored in .env file (never in code or version control)
• Config File Protection: Generated Asterisk configs use placeholders, never actual passwords

• File Permissions: .env file automatically set to 600 (owner-only read/write)
• Gitignore Protection: .env file excluded from version control
• Placeholder System: Generated config files require manual password entry
• Clear Warnings: Prominent security warnings when passwords not configured

If you discover a security vulnerability in this project, please follow these steps:

1. Do NOT open a public issue
2. Email the maintainers directly with details
3. Include:
   • Description of the vulnerability
   • Steps to reproduce
   • Potential impact
   • Suggested fix (if available)

• Initial Response: Within 48 hours
• Status Update: Within 7 days
• Fix Timeline: Critical issues within 14 days, others within 30 days

• Acknowledgment of your report
• Regular updates on fix progress
• Credit in release notes (if desired)
• Notification when fix is released

When deploying this service:

1. Always use strong passwords

   • Run setup.sh to auto-generate secure passwords
   • Or generate manually: python3 -c 'import secrets; print(secrets.token_hex(24))'

2. Protect your .env file

   • Never commit to version control
   • Set permissions to 600: chmod 600 .env
   • Backup securely with encryption

3. Network Security

   • Use firewall rules to restrict port access
   • Consider TLS/SSL for production
   • Limit ARI port (8088) access to trusted networks

4. Regular Updates

   • Keep Asterisk updated for security patches
   • Update Python dependencies regularly
   • Monitor security advisories

5. Monitoring

   • Review Asterisk logs regularly
   • Monitor for unauthorized access attempts
   • Set up alerts for suspicious activity

6. Rate Limiting (recommended for production)

   • Implement rate limiting on authentication endpoints to prevent brute force attacks
   • Consider using middleware like aiohttp-ratelimit or reverse proxy rate limiting
   • Recommended limits:
     • /auth/login: 5 requests per minute per IP
     • /auth/register: 3 requests per hour per IP
     • /call/incoming: 60 requests per minute per user

7. CORS Configuration (if serving web clients)

   • Configure CORS headers appropriately for your use case
   • Never use wildcard (*) for origins, headers, or exposed headers in production
   • Specify exact allowed origins and headers
   • Use aiohttp-cors middleware for proper CORS support
   • Example configuration:

     import aiohttp_cors
     
     cors = aiohttp_cors.setup(app, defaults={
         "https://yourdomain.com": aiohttp_cors.ResourceOptions(
             allow_credentials=True,
             expose_headers=["Content-Type", "Authorization"],
             allow_headers=["Content-Type", "Authorization"],
             allow_methods=["GET", "POST", "PUT", "DELETE"]
         )
     })
     
     # Apply CORS to routes
     for route in list(app.router.routes()):
         cors.add(route)

• Development Mode: Empty passwords allowed for development/testing only
• Generated Configs: Must manually update with actual passwords before production
• Log Files: Ensure log files don't contain sensitive information
• Asterisk Security: Follow Asterisk security best practices for production deployments
• Input Validation: All user inputs are validated and sanitized to prevent injection attacks
• Path Traversal Protection: File paths are sanitized to prevent directory traversal attacks
• API Query Parameters: Validated with proper error handling to prevent crashes