> For the complete documentation index, see [llms.txt](https://docs.radiusaas.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.radiusaas.com/es/portal-de-administracion/acceso-y-reglas/rules/extensiones-de-certificado.md).
# Extensiones de certificado
Las extensiones de certificados le permiten registrar un campo contenido en sus certificados para que una regla pueda leerlo directamente, ya sea un OID personalizado privado emitido por su propia PKI, o un campo estándar como el asunto, el SAN o un atributo del emisor. Una vez registrada, la extensión aparece como origen en los filtros de Atributo de certificado de cualquier regla o en las asignaciones dinámicas.
{% hint style="info" %}
Actualmente no se admite agregar extensiones de certificado personalizadas a perfiles SCEP en muchos sistemas MDM, incluidos Microsoft Intune y Jamf Pro.
Por lo tanto, recomendamos usar en su lugar el Nombre del sujeto del certificado para [asignar VLAN de forma dinámica](https://docs.radiusaas.com/admin-portal/settings/rules#vlan-assignment).
{% endhint %}
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