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Time synchronization on Linux with chrony, why it replaced ntpd, and how clock drift silently breaks Kerberos authentication.
Setting up a native Windows VPN client connection via PowerShell, and what split tunneling actually changes about your traffic routing.
Software RAID on Linux with mdadm: setting up a mirrored array, and the process for replacing a failed disk without data loss.
Building an AI-powered Slack bot, and what turns a basic demo into something genuinely useful: grounding, thread awareness, and honest scope limits.
Caching static and semi-static content in Apache2 with mod_cache, and why your application’s Cache-Control headers still matter.
Basic Apache2 connection limiting and DoS protection with mod_evasive, and the honest limits of what it can actually stop.