# Certificate Filters Index

CRL (Static)
Check the status of a certificate against a file-based Certificate Revocation List (CRL).
CRL (LDAP)
Check the status of a certificate against a Certificate Revocation List (CRL) that has been published to an LDAP directory.
Certificate Chain
Validate the certificate chain to ensure that the client certificate has been issued by a trusted CA.
Certificate Validity
Ensure that an X.509 certificate has not expired.
Find Certificate
Extract the certificate from various sources, including an HTTP header, message attribute, or the User Store.
OCSP
Check the status of the client certificate using the Online Certificate Status Protocol (OCSP).
XKMS
Validate the client certificate using the XML Key Management Service (XKMS).
CRL (Dynamic)
Validate a certificate against a CRL and automatically retrieves the CRL periodically.
CRL Responder
Configure the Enterprise Gateway to act as CRL responder by returning CRL files to clients.
Create Thumbprint
Create a human-readable thumbprint from an X.509 certificate.
Extract Certificate Attributes
Extract X.509 attributes from a certificate that is stored in a message attribute.
Validate Certificates in Gateway's Store
Check the Enterprise Gateway's certificate store for certificates that are due to expire before a specified number of days.