Install fetch-crl by entering the following commands in the terminal:
sudo apt update sudo apt install fetch-crl
Description:
Downloads Certificate Revocation Lists
This tool and associated cron entry ensure that Certificate Revocation Lists (CRLs) are periodically retrieved from the web sites of the respective Certification Authorities. . The fetch-crl tool finds all *.crl_url files in the configured CRL directory, downloads the CRLs listed in those files and saves them in the same directory. The default configuration uses /etc/grid-security/certificates as the CRL directory.
Homepage: https://wiki.nikhef.nl/grid/FetchCRL3
Version: 3.0.19-2
Section: universe/net