Performance & Security

1. Security

System security is enforced through strict validation and controlled access mechanisms.

1.1. Input Validation

  • All incoming attributes are validated before processing

  • Ensures correct data types and formats

  • Rejects malformed or unexpected requests early

  • Prevents injection and malformed packet issues

  • Maintains system stability under abnormal inputs

Validation occurs before any database or policy execution.

1.2. Access Control

  • Only trusted clients defined in clients.conf are allowed

  • Requests are verified using shared secrets

  • Unauthorized sources are silently dropped

  • Role-based checks can be applied for policy enforcement

Keep client definitions minimal and strictly controlled.

2. Performance

The system is optimized to handle high-throughput environments efficiently.

2.1. Database Optimizations

  • Uses optimized queries via sql_mac_auth1

  • Minimizes redundant database writes

  • Efficient indexing on session identifiers

  • Caching used for interim updates (Alive packets)

  • Reduces load during peak authentication bursts

Avoid unnecessary writes during interim updates to reduce DB load.

2.2. Session Efficiency

  • Lightweight handling of Start / Alive / Stop packets

  • Interim updates only refresh timestamps (no heavy processing)

  • Stop events handle final calculations in a single flow

  • Stateless design ensures minimal memory overhead

  • Supports high concurrency without performance degradation

3. Execution Flow Insight

on Accounting Packet:

    if Status == Start:
        Write session entry

    else if Status == Alive:
        Update last seen timestamp

    else if Status == Stop:
        Finalize session and compute usage

4. Key Takeaways

  • Secure request validation prevents malformed input issues

  • Strict access control protects the system boundary

  • Optimized database usage improves scalability

  • Efficient session handling supports high traffic environments