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Inspired by the efforts of a previous Redpill Linpro colleague, Espen Grøndahl, I’ve revived (or rather re-invented) his project “Fireplot”. By analyzing and filtering firewall logs, Fireplot graphs attempts to access blocked firewall ports, visualizing unexpected and unwanted activity towards my network. The Y axis is logarithmic, since activity towards lower ports is often more […]

A friend recently presented me with the following challenge: Configure a system through which several appliances, all of them having an identical, non-routable, default IP configuration, can be reached simultaneously. All appliances are preconfigured with an IP address of 192.168.1.1 and they had no routing configuration enabled. Yet they should all be reachable over the […]