SSH is the secure replacement for rlogin, rsh and telnet, which has been used in the past to do remote administration work. Even today some people still like using telnet for administration, even though it actively affects system security, since all commands and passwords are transmitted in cleartext. Since we are aware of the security risk of running a telnet service and want to be better we are not only using SSH, we will set up SSH with public key authentification.

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