bind

Local BIND9 Caching DNS Server

This tutorial will show you how to configure a caching BIND9 server on your local network, and configure an OpenWrt router to use it. This should result in slightly quicker DNS lookups, but to be honest, you may not notice a huge difference (my DNS lookups now take 30% less time, but I don't think this has made page loading noticeably faster). Here are a few situations where it could be particularly worthwhile:

  • You have a large LAN with lots of clients, and you want to take some load off your router
  • You are using something like modsecurity's real time RBL lookups and you want to reduce latency
  • Your ISP's nameservers are slow but you would still like to use them
  • You are a curious soul and you want to learn about DNS ;)
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