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The Silent Guardian: Linux's rp_filter and Why It's Not Just for Network Geeks
Ever felt like your Linux server has a mind of its own, subtly dropping packets when you're sure your firewall's configured perfectly? Chances are, you've stumbled upon a hidden gem (or headache, depending on your routing setup): the rp_filter, or Reverse Path Filtering.
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Welcome to the Rabbit Hole!
Ever feel like the world is a giant, tangled ball of yarn? One moment you're pondering the latest cyber threat, the next you're wondering how it ties into global politics, or why your hotel's Wi-Fi is so terrible. (Spoiler alert: sometimes, it's