A CRL Certificate Revocation List is a list of certificates (more precisely, their serial numbers) which have been revoked, that is, are no longer valid, and should therefore not be relied upon. You can upload the CRL that is deployed within your PKI Public Key Infrastructure.
To add a CRL, proceed as follows:
On the Revocation Lists (CRLs) tab, click New CRL.
The Add CRL dialog box opens.
Make the following settings:
Name: Enter a descriptive name for this CRL.
CRL file: Click the Folder icon next to the CRL file box and select the CRL you want to upload.
Comment (optional): Add a description or other information.
The new CRL appears on the list of revocation lists.
To delete a CRL click the button Delete of the respective CRL.