managing-apps/assets/Todo-Security.md

🔒 Orleans Cluster Security Implementation Checklist

Phase 1: Network Infrastructure Security ⚡

1.1 Network Configuration

• Set up private network (10.x.x.x or 192.168.x.x range)
• Configure VPN between trading and compute servers
• Assign static IPs to both servers
• Document network topology and IP assignments

1.2 Firewall Configuration

• Trading Server Firewall Rules:
  • Allow PostgreSQL port (5432) from compute server
  • Allow Orleans silo port (11111) from compute server
  • Allow Orleans gateway port (30000) from compute server
  • Block all other incoming connections
• Compute Server Firewall Rules:
  • Allow PostgreSQL port (5432) from trading server
  • Allow Orleans silo port (11121) from trading server
  • Allow Orleans gateway port (30010) from trading server
  • Block all other incoming connections
• Database Server Firewall Rules:
  • Allow PostgreSQL port (5432) from both servers only
  • Block all other incoming connections

Phase 2: Orleans Configuration Security ⚙️

2.1 Environment Variables

• Trading Server Environment:

  export SILO_ROLE=Trading
  export EXTERNAL_IP=192.168.1.100
  export TASK_SLOT=1
  export POSTGRESQL_ORLEANS="Host=db-server;Database=orleans;Username=user;Password=secure_password"
  

• Compute Server Environment:

  export SILO_ROLE=Compute
  export EXTERNAL_IP=192.168.1.101
  export TASK_SLOT=2
  export POSTGRESQL_ORLEANS="Host=db-server;Database=orleans;Username=user;Password=secure_password"
  

2.2 Code Configuration Updates

• Add NetworkingOptions security:

  .Configure<NetworkingOptions>(options =>
  {
      options.OpenTelemetryTraceParent = false;
  })
  

• Enhance MessagingOptions:

  .Configure<MessagingOptions>(options =>
  {
      options.ResponseTimeout = TimeSpan.FromSeconds(60);
      options.DropExpiredMessages = true;
      options.MaxMessageBodySize = 4 * 1024 * 1024;
      options.ClientSenderBuckets = 16;
  })
  

• Add cluster membership security:

  .Configure<ClusterMembershipOptions>(options =>
  {
      options.EnableIndirectProbes = true;
      options.ProbeTimeout = TimeSpan.FromSeconds(10);
      options.DefunctSiloCleanupPeriod = TimeSpan.FromMinutes(1);
      options.DefunctSiloExpiration = TimeSpan.FromMinutes(2);
  })
  

Phase 3: Database Security 🗄️

3.1 PostgreSQL Security

• Create dedicated Orleans user:

  CREATE USER orleans_user WITH PASSWORD 'secure_password';
  GRANT ALL PRIVILEGES ON DATABASE orleans TO orleans_user;
  

• Enable SSL/TLS for PostgreSQL:

  # In postgresql.conf
  ssl = on
  ssl_cert_file = 'server.crt'
  ssl_key_file = 'server.key'
  

• Configure pg_hba.conf:

  # Only allow connections from specific IPs
  host    orleans    orleans_user    192.168.1.100/32    md5
  host    orleans    orleans_user    192.168.1.101/32    md5
  

3.2 Connection String Security

• Use encrypted connection strings (Azure Key Vault, AWS Secrets Manager)
• Rotate database passwords regularly
• Monitor database access logs

Phase 4: Application Security 🛡️

4.1 Logging & Monitoring

• Add security event logging:

  .ConfigureLogging(logging =>
  {
      logging.AddFilter("Orleans", LogLevel.Information);
      logging.AddFilter("Microsoft.Orleans", LogLevel.Warning);
  })
  

• Set up cluster health monitoring
• Configure alerting for cluster membership changes
• Log all grain placement decisions

4.2 Access Control

• Implement server authentication (optional)
• Add grain-level authorization (if needed)
• Set up audit logging for sensitive operations

Phase 5: Advanced Security (Optional) 🔐

5.1 TLS/SSL Encryption

• Generate SSL certificates for Orleans communication
• Configure TLS in Orleans:

  .Configure<NetworkingOptions>(options =>
  {
      options.UseTls = true;
      options.TlsCertificate = "path/to/certificate.pfx";
  })
  

• Set up certificate rotation process

5.2 Container Security (if using Docker)

• Use non-root users in containers
• Scan container images for vulnerabilities
• Implement container network policies
• Use secrets management for sensitive data

Phase 6: Testing & Validation ✅

6.1 Security Testing

• Test cluster connectivity between servers
• Verify firewall rules are working correctly
• Test failover scenarios (server disconnection)
• Validate grain placement is working correctly
• Test database connection security

6.2 Performance Testing

• Load test the cluster with both server types
• Monitor network latency between servers
• Test grain migration between servers
• Validate load balancing is working

Phase 7: Documentation & Maintenance 📚

7.1 Documentation

• Document network architecture
• Create security runbook
• Document troubleshooting procedures
• Create incident response plan

7.2 Ongoing Maintenance

• Set up regular security audits
• Schedule password rotation
• Monitor security logs
• Update Orleans and dependencies regularly
• Review and update firewall rules

Priority Levels 🎯

• 🔴 Critical (Do First): Network configuration, firewall rules, database security
• 🟡 Important (Do Second): Orleans configuration updates, monitoring
• 🟢 Optional (Do Later): TLS encryption, advanced access control

Estimated Timeline ⏱️

• Phase 1-2: 1-2 days (Network + Orleans config)
• Phase 3: 1 day (Database security)
• Phase 4: 1 day (Application security)
• Phase 5: 2-3 days (Advanced security)
• Phase 6: 1-2 days (Testing)
• Phase 7: Ongoing (Documentation & maintenance)

Total: 6-9 days for complete implementation

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Note: Start with Phases 1-3 for basic security, then add advanced features as needed. The most critical items are network isolation and database security.