Description

This curriculum spans the technical and organisational complexity of a multi-workshop engineering integration program, addressing firewall deployment across vehicle lifecycle stages from design and compliance to incident response and supplier coordination.

Module 1: Threat Landscape and Regulatory Alignment in Automotive Systems

Selecting attack surface boundaries for in-vehicle networks based on ISO/SAE 21434 threat analysis and risk assessment (TARA) outputs.
Mapping firewall placement to UNECE WP.29 R155 and R156 compliance requirements for vehicle type approval.
Integrating threat intelligence feeds from automotive ISACs into firewall rule baselines for timely vulnerability response.
Defining data sovereignty requirements for telematics data flows across regional markets using geo-fenced firewall policies.
Aligning firewall logging granularity with mandatory incident reporting timelines under national CSIRT frameworks.
Coordinating firewall policy exceptions with vehicle safety-critical systems to avoid unintended CAN bus disruptions.

Module 2: Architecture Integration with In-Vehicle Networks

Positioning stateful inspection firewalls between domain controllers (e.g., ADAS, Infotainment) without increasing CAN FD message latency beyond 10ms.
Implementing VLAN segmentation on Ethernet backbone switches with firewall enforcement at zone boundaries.
Configuring firewall rules to allow diagnostic over IP (DoIP) sessions only during authorized service modes.
Managing firewall fail-open versus fail-closed behavior during power cycling or ECU reset events.
Integrating firewall policy updates with OTA software deployment pipelines while maintaining rollback capability.
Handling multicast traffic filtering for SOME/IP services without disrupting time-sensitive networking (TSN) synchronization.

Module 3: Secure Communication Protocols and Deep Packet Inspection

Enabling TLS 1.3 inspection for V2X messages using vehicle-specific certificate pinning in firewall policy.
Configuring DPI signatures to detect malformed UDS (Unified Diagnostic Services) sequences indicative of ECU probing.
Disabling legacy protocols such as HTTP or FTP at the firewall level in telematics control units.
Implementing firewall rules to block unauthorized use of DoIP routing activation requests.
Extracting and logging VIN from encrypted OBD-II tunneling sessions for audit trail correlation.
Managing certificate lifecycle events in firewall trust stores during ECU replacement or reprogramming.

Module 4: Firewall Policy Design and Rule Optimization

Creating least-privilege rules for firmware update servers using source IP, port, and payload length constraints.
Consolidating overlapping rules across multiple ECUs to reduce rule table size and improve match performance.
Implementing time-based firewall rules to restrict remote access during vehicle operation hours.
Using application-layer context (e.g., service ID in UDS) to allow only permitted diagnostic sessions.
Designing exception handling workflows for engineering access during vehicle development and validation.
Enforcing deny-by-default policies on unused Ethernet ports in gateway modules.

Module 5: Real-Time Performance and Resource Constraints

Profiling firewall CPU utilization under peak CAN-to-Ethernet bridging load to prevent ECU throttling.
Optimizing rule evaluation order to place high-frequency matches (e.g., OTA traffic) at the top of access lists.
Allocating dedicated memory buffers for firewall session state tables in resource-constrained gateways.
Implementing rate limiting on diagnostic request floods to prevent DoS conditions on critical ECUs.
Reducing inspection overhead by bypassing known-safe firmware update packages via cryptographic hash whitelisting.
Monitoring packet drop rates at the firewall interface to detect misconfigured QoS or buffer exhaustion.

Module 6: Incident Detection and Forensic Readiness

Forwarding firewall deny events to a centralized automotive SIEM with vehicle identifier and timestamp context.
Configuring session logging for all external-facing interfaces (e.g., cellular, Wi-Fi) with 90-day retention.
Triggering ECU lockdown procedures upon detection of repeated firewall policy violations from a single source.
Correlating firewall logs with intrusion detection system (IDS) alerts to reduce false positives in CAN traffic.
Preserving firewall configuration snapshots before and after OTA updates for forensic rollback analysis.
Masking sensitive data (e.g., GPS coordinates, driver identifiers) in logs prior to transmission to backend systems.

Module 7: Over-the-Air Updates and Lifecycle Management

Scheduling firewall rule updates during OTA firmware deployments to maintain policy-to-code consistency.
Validating digital signatures on firewall configuration files before application in production ECUs.
Implementing staged rollout of firewall policies across vehicle fleets using VIN-based grouping.
Rolling back firewall configurations automatically upon detection of post-update communication failures.
Integrating firewall health checks into the vehicle’s secure boot attestation process.
Managing configuration drift between vehicle variants by maintaining model-specific firewall policy branches.

Module 8: Vendor and Supply Chain Coordination

Enforcing firewall configuration standards in Tier 1 supplier contracts for gateway ECUs.
Validating third-party ECU communication patterns against firewall whitelists during integration testing.
Requiring suppliers to provide TARA documentation justifying requested firewall rule exceptions.
Establishing secure channels for firewall log retrieval from supplier-managed telematics units.
Coordinating firewall testing procedures with suppliers using standardized test vectors and traceability matrices.
Managing cryptographic key exchange processes for firewall policy encryption with external service providers.