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• Make a backup copy of your home directory in /var/tmp on your neighbour's "backup server," using scp. Archive and compress before starting the data transfer! Connect to the remote host using ssh, unpack the backup, and put one file back on the original machine using sftp.

10.7.3. Security

• Make a list of open (listening) ports on your machine.

• Supposing you want to run a web server. Which services would you deactivate? How would you do that?

• Install available updates.

• How can you see who connected to your system?

• Make a repetitive job that reminds you to change your password every month, and preferably the root

password as well.

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