Main tuto: https://kifarunix.com/install-and-setup-backuppc-server-on-ubuntu-20-04/

• to get user “backuppc” with uid=995, gid=1000 and /home/backuppc as home folder:

  # groupadd -g 1000 backuppc
  # useradd -r -m -d /home/backuppc -s /bin/bash -c "BackupPC user" -u 995 -g 1000 backuppc 

• let login on the remote client with “root” (user backuppc doesn't exist on the backuped clients!)

   $Conf{RsyncSshArgs} = [
          '-e', '$sshPath -l root',
  ];

Création de certificat auto-signé: https://www.digitalocean.com/community/tutorials/how-to-create-a-self-signed-ssl-certificate-for-apache-in-ubuntu-16-04

https://URL/BackupPC_Admin

# chmod 4755 /bin/ping