Ping, traceroute, and whois are among the first tools new admins learn. Many people who aren’t network specialists stop there—and that’s a mistake. With the standard toolset you can pull far more information about a problem than…
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Mastering systemd: Creating Your Own Linux Service
Despite numerous issues and mixed feelings from users, systemd has become the de facto standard in most Linux distributions. It allows you to create a simple service in just a few minutes and a handful of configuration…
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Divination by IPsec logs: A practical guide to IKE protocol
IPsec was designed as a universal protocol stack for VPN – the ultimate solution rendering all alternative protocols unnecessary. However, the existence of OpenVPN, WireGuard, and many other protocols clearly indicates that the developers of IPsec failed to achieve their goal.
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