File and Variable Reference

1. Core Files

  • sites-available/lte Purpose: Dedicated RADIUS listener for pure LTE traffic.

  • sites-available/ent_lte Purpose: Multi-tenant entry point that separates LTE and Enterprise traffic.

  • policy.d/lte_auth_policy Purpose: Defines the internal password standard and basic reply attributes for LTE users.

  • modules/lte_sql Purpose: SQL configuration for recording LTE specific accounting data.

2. Variable Reference Matrix

2.1. 3GPP-IMSI

  • Source: Sent by the UE via the SMF/SGSN.

  • Purpose: Unique identifier for the subscriber’s SIM card.

  • Usage: Logged in lte_auth_log for tracking.

2.2. 3GPP-IMEISV

  • Source: Sent by the mobile device hardware.

  • Purpose: Identifies the specific physical device being used.

  • Usage: Used for device-level blocking or analysis.

2.3. Called-Station-Id (APN)

  • Source: Mobile network APN configuration.

  • Purpose: Determines the service profile (e.g., dbnbb for broadband, dbnbbpre for prepaid).

  • Logic: Used in ent_lte to branch between LTE and Enterprise logic paths.

2.4. Cleartext-Password

  • Source: Hardcoded in lte_auth_policy.

  • Purpose: Internal password used for PAP validation.

  • Standard Value: dialog

2.5. Framed-Address

  • Source: Dynamic pool or SMF/GGSN reservation.

  • Purpose: The IP address assigned to the mobile session.

  • Usage: Recorded in SQL to map traffic back to a specific subscriber.