Security Services

Security services provide the network security infrastructure protecting Pimeleon and connected systems from unauthorized access and threats. These services implement firewalls, access control policies, intrusion detection, and traffic filtering working together to maintain network integrity and protect against both external attacks and policy violations.

In This Section

Firewall Architecture

Firewall Architecture

Network firewall implementation providing traffic filtering, access control, and policy enforcement. Covers nftables rule structure, traffic filtering policies, port forwarding configuration, DDoS protection mechanisms, and integration with security monitoring services.

Service Capabilities

• Packet Filtering: Inspecting and filtering network traffic based on rules
• Stateful Inspection: Tracking connection states for intelligent filtering
• NAT/Port Forwarding: Network address translation and port redirection
• Access Control Lists: Granular permit/deny rules for traffic flows
• DDoS Protection: Rate limiting and attack traffic identification
• IPS Integration: Coordination with intrusion prevention systems
• Traffic Logging: Complete record of filtered and allowed traffic

Security Layers

• Perimeter Security: Protecting network boundaries from external threats
• Egress Control: Monitoring and controlling outbound traffic
• Inter-Network Filtering: Enforcing policies between network segments
• Service Protection: Dedicated rules for critical network services
• Policy Enforcement: Implementing administrative security policies
• Threat Response: Automatic rules for detected threats

Configuration Highlights

• nftables: Modern netfilter framework for efficient packet processing
• Stateful Rules: Connection-aware filtering reducing false positives
• Performance: Optimized for home network speeds and RPi hardware
• Maintainability: Clear rule organization and documentation
• Integration: Coordination with monitoring and alerting services
• Emergency Access: Failsafe mechanisms for critical administration

Related Services

• Filtering Services - Content filtering and blocking
• Monitoring Services - Security event monitoring
• Management Services - Security policy administration