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• Charly's Column – Dnstop

  In last month's issue, Charly sent the lean pdnsd DNS cache down the catwalk. To see whether pdnsd really does the work expected of it, he now puts dnstop through infinite rounds in the name of names.

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• Charly's Column – Reverse SSH Tunnel

  This month, Charly Kühnast draws attention to a widely unknown weather phenomenon: The instability of rarely used tunnels leading to a Raspberry Pi. Read on for greater insights.

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• Charly's Column – Searx

  It goes against the economic rationale to assume that commercial search engines have the best interests of users at heart when it comes to data protection and use. Sys admin Charly has found an alternative.

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• Charly's Column – Mi Flora

  Columnist Charly Kühnast recently attached Mi Flora humidity sensors to his potted plants. At first, they only transmitted junk on Bluetooth, but armed with the right tools and a Rasp Pi, Charly now reaps a rich harvest of data.

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• Charly's Column – paping

  Like every sys admin, Charly occasionally throws a pebble at a machine to see if it is still alive. If the other end does not respond to the ping, that does not always mean it's dead. Maybe the pebble just missed.

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