# Docker Security Fixes - Complete Implementation
## Overview
This document provides a comprehensive summary of all Docker configuration fixes and security enhancements implemented to address the critical issues identified by the Testing Agent.
## Issues Addressed
### ✅ 1. Placeholder Image References Fixed
**Problem**: docker-compose.yml used placeholder `ghcr.io/your-username/fullproxmoxmcp:latest`
**Solution**:
- **Updated `/docker/docker-compose.prod.yml`**: Replaced placeholder with local build configuration
- **Created `/docker/docker-compose.secure.yml`**: Production-ready compose with enhanced security
- **Added build context**: Properly configured Docker build with metadata and security scanning
**Files Modified**:
- `/docker/docker-compose.prod.yml` - Fixed image references and added build configuration
- `/docker/docker-compose.secure.yml` - New production-ready configuration with security hardening
### ✅ 2. Caddyfile Syntax Errors Fixed
**Problem**:
- Line 14: Unsupported `protocols` directive (Caddy v2 syntax error)
- Line 40-46: Invalid rate limiting syntax
- Missing SSL/TLS termination configuration
**Solution**:
- **Fixed `/caddy/Caddyfile`**: Removed unsupported directives and fixed syntax
- **Created `/caddy/Caddyfile.prod`**: Production-ready configuration with SSL/TLS termination
**Key Improvements**:
- Removed deprecated `protocols h1 h2` directive
- Fixed rate limiting with proper Caddy v2 syntax
- Added comprehensive SSL/TLS configuration with Let's Encrypt
- Enhanced security headers with CSP, HSTS, and CORS
- Added health check endpoints
### ✅ 3. Docker-Compose Issues Fixed
**Problem**:
- Used deprecated `version: '3.8'` directive
- Missing security headers implementation
- Container privilege verification needed
**Solution**:
- **Removed deprecated version directive**: Using Compose Specification format
- **Added security hardening**: Container security options, capability dropping, resource limits
- **Enhanced network isolation**: Multiple networks for segmentation
**Security Enhancements**:
```yaml
security_opt:
- no-new-privileges:true
- apparmor:docker-default
read_only: true
cap_drop:
- ALL
cap_add:
- NET_BIND_SERVICE
```
### ✅ 4. Deployment Script Security Fixed
**Problem**:
- Line 138: `sed -i` command could fail silently
- Line 282: `rm -rf` without verification dangerous
- Missing input validation for environment variables
**Solution**:
- **Enhanced `/deploy/deploy-production.sh`**: Added input validation and error handling
- **Enhanced `/deploy/local-build-deploy.sh`**: Added secure backup and validation
- **Created `/deploy/deploy-secure.sh`**: Comprehensive secure deployment script
**Security Improvements**:
- Input validation for all user inputs
- Safe file operations with verification
- Proper error handling and cleanup
- Backup validation before removal
### ✅ 5. SSL/TLS Implementation Added
**Problem**: No SSL/TLS implementation
**Solution**:
- **Production Caddyfile**: Automatic HTTPS with Let's Encrypt
- **Security headers**: HSTS, CSP, and other security headers
- **Certificate management**: Automatic certificate renewal
**Configuration**:
```caddy
your-domain.com {
tls {
# Let's Encrypt configuration
}
header {
Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
Content-Security-Policy "default-src 'self'; ..."
}
}
```
### ✅ 6. Container Security Scanning Added
**Problem**: Missing image security scanning
**Solution**:
- **Created `/docker/security-scan.sh`**: Comprehensive security scanning script
- **Integrated Trivy**: Vulnerability scanning for containers and configurations
- **Added Hadolint**: Dockerfile security linting
**Features**:
- Vulnerability scanning with severity filtering
- Configuration security analysis
- Automated report generation
- CI/CD integration ready
### ✅ 7. Network Isolation Enhanced
**Problem**: Missing network isolation improvements
**Solution**:
- **Multiple networks**: Frontend, backend, and monitoring networks
- **Internal networks**: Backend services isolated from internet
- **Network segmentation**: Proper traffic isolation
**Network Configuration**:
```yaml
networks:
mcp-frontend: # Internet-facing
mcp-backend: # Internal only
internal: true
mcp-monitoring: # Monitoring only
internal: true
```
## New Files Created
### Security Scripts
1. **`/docker/security-scan.sh`** - Comprehensive security scanning
2. **`/docker/validate-security.sh`** - Security configuration validation
3. **`/deploy/deploy-secure.sh`** - Enhanced secure deployment
### Configuration Files
4. **`/caddy/Caddyfile.prod`** - Production Caddyfile with SSL/TLS
5. **`/docker/docker-compose.secure.yml`** - Production-ready compose file
## Security Features Implemented
### Container Security
- ✅ **Non-root users**: All containers run as non-root
- ✅ **Capability dropping**: All capabilities dropped, minimal added back
- ✅ **Read-only filesystem**: Root filesystem read-only with tmpfs
- ✅ **Security options**: no-new-privileges, AppArmor profiles
- ✅ **Resource limits**: CPU, memory, and process limits
### Network Security
- ✅ **Network segmentation**: Multiple isolated networks
- ✅ **Internal networks**: Backend services not internet-accessible
- ✅ **Port binding**: Localhost-only for admin interfaces
- ✅ **Firewall-ready**: Proper port exposure configuration
### Data Security
- ✅ **Volume security**: Read-only mounts for configuration
- ✅ **Secret management**: Secure handling of keys and tokens
- ✅ **Backup security**: Encrypted backups with retention policy
### SSL/TLS Security
- ✅ **Automatic HTTPS**: Let's Encrypt integration
- ✅ **Security headers**: HSTS, CSP, CORS, X-Frame-Options
- ✅ **TLS configuration**: Modern TLS with security best practices
## Deployment Options
### 1. Development Deployment
```bash
./deploy/local-build-deploy.sh deploy
```
- Local image building
- Basic security configuration
- Development-friendly setup
### 2. Production Deployment
```bash
./deploy/deploy-secure.sh deploy
```
- Enhanced security configuration
- Comprehensive validation
- Production monitoring
### 3. Security Scanning Only
```bash
./docker/security-scan.sh scan proxmox-mcp-server latest
```
- Vulnerability scanning
- Configuration analysis
- Security report generation
## Validation and Monitoring
### Security Validation
```bash
./docker/validate-security.sh docker-compose.secure.yml
```
- Container security analysis
- Network configuration validation
- Security score calculation
### Health Monitoring
- Container health checks
- Service availability monitoring
- Security monitoring container
- Prometheus metrics (optional)
## Migration Path
### From Current Setup
1. **Backup existing deployment**:
```bash
./deploy/deploy-secure.sh backup
```
2. **Run security validation**:
```bash
./docker/validate-security.sh current-compose.yml
```
3. **Deploy secure version**:
```bash
./deploy/deploy-secure.sh deploy
```
4. **Verify security**:
```bash
./deploy/deploy-secure.sh validate
```
### Rollback Option
```bash
./deploy/deploy-secure.sh rollback
```
## Security Checklist
### Pre-Deployment
- [ ] Environment variables validated
- [ ] SSH keys properly secured
- [ ] SSL certificates configured (if using custom domain)
- [ ] Firewall rules configured
- [ ] Monitoring endpoints accessible
### Post-Deployment
- [ ] All containers running as non-root
- [ ] Security scan passing
- [ ] SSL/TLS working correctly
- [ ] Health checks passing
- [ ] Logs configured with rotation
- [ ] Backup system functional
## Performance Impact
### Resource Usage
- **Memory**: ~512MB minimum, 2GB recommended
- **CPU**: ~0.5 cores minimum, 2 cores recommended
- **Storage**: ~1GB for containers, additional space for logs/backups
- **Network**: Minimal impact, enhanced security monitoring
### Security vs Performance Trade-offs
- **Read-only filesystems**: Minimal performance impact, significant security gain
- **Network segmentation**: Negligible performance impact, major security improvement
- **Security scanning**: One-time build cost, ongoing security assurance
- **Resource limits**: Prevents resource exhaustion, ensures stability
## Maintenance
### Regular Tasks
1. **Security updates**: Monthly image rebuilds with latest base images
2. **Certificate renewal**: Automatic with Let's Encrypt
3. **Log rotation**: Configured automatically
4. **Backup management**: Automatic with retention policy
### Monitoring
- Container health status
- SSL certificate expiration
- Security scan results
- Resource utilization
- Failed login attempts
## Conclusion
All critical Docker configuration issues have been resolved with comprehensive security enhancements:
1. ✅ **Placeholder images replaced** with proper local build system
2. ✅ **Caddyfile syntax fixed** with production-ready SSL/TLS configuration
3. ✅ **Docker-compose modernized** with security hardening
4. ✅ **Deployment scripts secured** with validation and error handling
5. ✅ **Security scanning integrated** with automated vulnerability detection
6. ✅ **Network isolation implemented** with proper segmentation
7. ✅ **Production readiness achieved** with monitoring and validation
The Proxmox MCP server is now production-ready with enterprise-grade security, automated deployment, and comprehensive monitoring capabilities.
