@johnpoz

Thanks for reply.

After you replyed, I investigated and I understand now that this warning has nothing to do with pfsense.

The file is a saved web page:
https://www.ceos3c.com/pfsense/pfsense-generate-ssl-certificate-https-pfsense/

The scanner is on my ReadyNAS v 6.10.1, i dont know who is the "produser".