via https://www.reddit.com/r/Sysadmin_Fr/comments/i0ijyv/fliquer_ses_coll%C3%A8gues_avec_ssh/
via https://linuxfr.org/users/windu2b/journaux/quand-la-caisse-d-epargne-force-ses-clients-a-reactiver-des-protocoles-de-securite-obsoletes
+ Nextcloud et 2FA, la suite
+
via @nixcraft