You can use the No Decryption tab to enable settings to block traffic that is matched to a decryption policy configured with the No Decrypt action ( Policies > Decryption > Action). Use these options to control server certificates for the session, though the firewall does not decrypt and inspect the session traffic. https://docs.paloaltonetworks.com/pan-os/7-1/pan-os-web-interface-help/objects/objects-decryption-profile