====== Linux DNS ======
  * [[http://www.ubuntugeek.com/dnstracer-trace-dns-queries-to-the-source.html|DNStracer – Trace DNS queries to the source]]

===== Google Public DNS =====
  * https://developers.google.com/speed/public-dns/
  * ''8.8.8.8'', ''8.8.4.4''를 등록한다. ''/etc/resolv.conf''<code>
nameserver 8.8.8.8
nameserver 8.8.4.4
</code>