The certrldb subcommand manages the certificate revocation list (CRL) database, /etc/inet/ike/crls. The CRL database maintains the revocation lists for public keys. Certificates that are no longer valid are on this list. When PKIs provide you with a CRL, you can install the CRL in the CRL database with the ikecert certrldb command. For the procedure, see How to Handle a Certificate Revocation List.