Security Best Practices

# Production security configuration
ENVIRONMENT=production
DEBUG=false
LOG_LEVEL=INFO

# Database security
DATABASE_SSL_MODE=require
DATABASE_SSL_CERT=/path/to/client-cert.pem
DATABASE_SSL_KEY=/path/to/client-key.pem
DATABASE_SSL_CA=/path/to/ca-cert.pem
DATABASE_CONNECTION_POOL_SIZE=20
DATABASE_CONNECTION_TIMEOUT=30

# JWT security
JWT_SECRET_KEY=
JWT_ALGORITHM=HS256
JWT_ACCESS_TOKEN_EXPIRE_MINUTES=15
JWT_REFRESH_TOKEN_EXPIRE_DAYS=7
JWT_BLACKLIST_ENABLED=true

# TLS configuration
TLS_VERSION_MIN=1.2
TLS_CERT_PATH=/etc/ssl/certs/sysmanage.crt
TLS_KEY_PATH=/etc/ssl/private/sysmanage.key
TLS_CA_PATH=/etc/ssl/certs/ca-bundle.crt

# Security headers
SECURITY_HEADERS_ENABLED=true
CSRF_PROTECTION_ENABLED=true
CORS_ORIGINS=["https://sysmanage.company.com"]
RATE_LIMITING_ENABLED=true
RATE_LIMIT_PER_MINUTE=100

# Audit and monitoring
AUDIT_LOGGING_ENABLED=true
AUDIT_LOG_LEVEL=INFO
SECURITY_EVENTS_ENABLED=true
PROMETHEUS_METRICS_ENABLED=true
HEALTH_CHECK_ENABLED=true

# /etc/nginx/sites-available/sysmanage
server {
    listen 443 ssl http2;
    server_name sysmanage.company.com;

    # TLS configuration
    ssl_certificate /etc/ssl/certs/sysmanage.crt;
    ssl_certificate_key /etc/ssl/private/sysmanage.key;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;

    # Security headers
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline';" always;

    # Rate limiting
    limit_req zone=sysmanage burst=20 nodelay;
    limit_conn addr 10;

    # Proxy configuration
    location / {
        proxy_pass http://127.0.0.1:8000;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }

    # WebSocket configuration
    location /ws {
        proxy_pass http://127.0.0.1:8000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}