This document outlines the security features integrated into the multi-agent Docker environment, including authentication, rate limiting, connection management, and secure communication protocols.

• Token-based authentication for WebSocket connections
• Bearer token validation in Authorization header
• Configurable authentication via WS_AUTH_ENABLED environment variable

• Custom authentication protocol for TCP connections
• Secure token exchange during connection establishment
• Session-based authentication with timeout management

• JWT token generation and validation
• Configurable JWT secrets for token signing
• Secure token refresh mechanisms

• Per-client rate limiting with configurable windows
• Burst request handling with separate limits
• Automatic IP blocking for abuse prevention
• Sliding window algorithm for accurate rate limiting

• Maximum concurrent connections for WebSocket and TCP
• Per-IP connection limits to prevent resource exhaustion
• Connection timeout management with automatic cleanup

• JSON-RPC protocol validation for all messages
• Message size limits to prevent memory exhaustion
• Buffer overflow protection with configurable limits
• Content sanitization to prevent injection attacks

• Script injection prevention with HTML/JavaScript filtering
• Prototype pollution protection for object validation
• Path traversal prevention for file operations
• SQL injection protection for database queries

• Configurable CORS policies with origin validation
• Secure headers for cross-origin requests
• Method and header restrictions for API endpoints
• Preflight request handling for complex requests

• Configurable SSL encryption for production deployments
• Certificate management with custom CA support
• Protocol version enforcement for secure connections
• Cipher suite configuration for optimal security

• Comprehensive audit trails for all security events
• Real-time threat detection with automated blocking
• Performance monitoring with metrics collection
• Health check endpoints for service status

• Automatic failure detection with configurable thresholds
• Service degradation protection with fallback mechanisms
• Recovery monitoring with automatic circuit reset
• Cascade failure prevention for dependent services

All security features are configured through environment variables defined in .env:

# Authentication
WS_AUTH_ENABLED=true
WS_AUTH_TOKEN=your-secure-websocket-token
TCP_AUTH_TOKEN=your-secure-tcp-token
JWT_SECRET=your-jwt-secret-minimum-32-chars

# Rate Limiting
RATE_LIMIT_ENABLED=true
RATE_LIMIT_WINDOW_MS=60000
RATE_LIMIT_MAX_REQUESTS=100

# Connection Limits
WS_MAX_CONNECTIONS=100
TCP_MAX_CONNECTIONS=50
WS_CONNECTION_TIMEOUT=300000

# Security Headers
CORS_ENABLED=true
CORS_ALLOWED_ORIGINS=https://yourdomain.com
SSL_ENABLED=false

The system includes secure defaults for development and production:

• Change all default tokens and secrets
• Enable SSL/TLS for production
• Configure restrictive CORS policies
• Set appropriate rate limits
• Enable security audit logging
• Configure firewall rules
• Set up monitoring and alerting

# Generate secure tokens
WS_AUTH_TOKEN=$(openssl rand -hex 32)
TCP_AUTH_TOKEN=$(openssl rand -hex 32)
JWT_SECRET=$(openssl rand -hex 64)

# Generate self-signed certificates (for testing)
openssl req -x509 -newkey rsa:4096 -keyout server.key -out server.crt -days 365 -nodes

# Or use Let's Encrypt for production
certbot certonly --standalone -d yourdomain.com

# Allow only necessary ports
ufw allow 22    # SSH
ufw allow 443   # HTTPS
ufw allow 3002  # WebSocket (if external access needed)
ufw allow 9500  # TCP MCP (if external access needed)
ufw enable

# Monitor security events
tail -f /app/mcp-logs/security/*.log | grep SECURITY

# Set up log rotation
logrotate -f /etc/logrotate.d/mcp-security

# Automated health monitoring
curl -f http://localhost:9501/health
curl -f http://localhost:3002/health

# Monitor connection counts
ss -tulnp | grep -E ":(3002|9500)"

# Monitor resource usage
docker stats multi-agent-container

┌─────────────────┐    ┌──────────────────┐    ┌─────────────────┐
│   Client App    │────│  Auth Middleware │────│  MCP Services   │
└─────────────────┘    └──────────────────┘    └─────────────────┘
         │                       │                       │
         │              ┌────────▼────────┐              │
         │              │  Rate Limiter   │              │
         │              └─────────────────┘              │
         │                       │                       │
         │              ┌────────▼────────┐              │
         └──────────────│ Circuit Breaker │──────────────┘
                        └─────────────────┘

1. Connection Establishment

   • Client attempts connection
   • IP blocking check
   • Authentication validation
   • Rate limit verification
   • Connection establishment

2. Message Processing

   • Input validation
   • Size limit checks
   • Content sanitization
   • Rate limit updates
   • Message forwarding

3. Error Handling

   • Circuit breaker evaluation
   • Automatic blocking decisions
   • Security event logging
   • Client notification

# Test WebSocket authentication
node /app/core-assets/scripts/secure-client-example.js ws

# Test TCP authentication
node /app/core-assets/scripts/secure-client-example.js tcp

# Test rate limiting with rapid requests
for i in {1..200}; do
  curl -H "Authorization: Bearer $WS_AUTH_TOKEN" \
       ws://localhost:3002 &
done

# Check for security events
mcp-security-audit

# Monitor connections
mcp-connections

# Health status
mcp-health

Problem: Using default tokens in production Solution: Always change default tokens before deployment

Problem: Short or predictable JWT secrets Solution: Use cryptographically secure random strings (minimum 32 characters)

Problem: Allowing all origins with wildcards Solution: Specify exact allowed origins for production

Problem: Unencrypted communication in production Solution: Always enable SSL/TLS for production deployments

Problem: High rate limits allowing abuse Solution: Set conservative limits and monitor usage patterns

1. Principle of Least Privilege: Grant minimum necessary permissions
2. Defense in Depth: Implement multiple security layers
3. Regular Updates: Keep dependencies and certificates current
4. Monitoring: Implement comprehensive logging and alerting
5. Testing: Regular security testing and penetration testing
6. Documentation: Maintain up-to-date security documentation

• Report security vulnerabilities privately
• Include detailed reproduction steps
• Provide affected versions and configurations

• Check logs for error messages
• Review configuration settings
• Test with secure client examples
• Monitor health check endpoints

• Security patches are prioritized
• Follow semantic versioning for updates
• Test thoroughly in staging environment
• Maintain rollback procedures