EIDFED-010: AD FS Extranet Lockout Settings
- Plataforma
- Entra ID / M365
- Categoría
- Entra ID Federation & Hybrid Identity
- Severidad
- Medium
- Pilar de Zero Trust
- Identity (peso 3)
- Fixtures de referencia
- 2
- Cobertura de ramas
- Observada: los fixtures prueban los veredictos que ejercitan
- Procedencia
- baseline
Qué comprueba
AD FS extranet lockout protects against brute-force and password spray attacks targeting the AD FS endpoint exposed to the internet. Without proper extranet lockout configuration, attackers can attempt unlimited password guesses against any federated account through the AD FS proxy, potentially compromising accounts with weak or commonly used passwords. The smart lockout feature in AD FS provides protection while minimizing lockout impact on legitimate users.
Valor recomendado
Extranet smart lockout enabled with appropriate threshold and observation window configured to prevent brute-force attacks
Remediación
Review the AD FS extranet lockout configuration using Get-AdfsProperties in PowerShell on the AD FS server. Enable extranet smart lockout if not already active and configure an appropriate lockout threshold and observation window based on your organization's authentication patterns. Monitor the AD FS security logs for extranet lockout events and adjust thresholds if legitimate users are being locked out or if brute-force attempts are succeeding.
Veredictos probados con fixtures
Cada veredicto de esta tabla está probado por un fixture de referencia en la suite de pruebas que valida el módulo. La tabla se deriva de la última ejecución en verde; no puede editarse a mano.
| Escenario | Veredicto esperado |
|---|---|
| clean | PASS |
| known-bad | WARN |
Mapeos a marcos de referencia
- NIST SP 800-53
- AC-7