via https://linuxfr.org/users/crag/liens/ftp-a-50-ans
via @bortzmeyer
via https://letsencrypt.org/2019/03/11/acme-protocol-ietf-standard.html via @Seboss666
via https://www.theregister.co.uk/2018/04/24/ietf_gdpr_compliance_advice/
