Administration - Debian OS
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      Cannot perform a remote backup to a Debian target server due to disabled root SSH access

      Unlocking SSH Under Root on Debian OS Target Server Via Terminal for Remote Backup

      Problem

      Cannot perform a remote backup to a Debian target server.

      Debian has SSH access under root user disabled by default.

      Solution

      Enable SSH access under the root user.

      1. Access the terminal/console of the remote server.

      2. Run the following command to permit root login:     

      sed -i 's/#PermitRootLogin prohibit-password/PermitRootLogin yes/g' /etc/ssh/sshd_config

        3.  Run the following command to restart the SSH service: 

      systemctl restart sshd.service

      NOTE:

      After performing your backup operation, it may be desirable to disable root access again for security reasons.

      To re-secure the root account:

      1. Access the terminal/console of the remote server.

      2. Run the following command to permit root login:

        sed -i 's/#PermitRootLogin prohibit-password/PermitRootLogin no/g' /etc/ssh/sshd_config

      3.  Run the following command to restart the SSH service:

         systemctl restart sshd.service