Interesting Snippets from 2018-04-25

• porttest.dns-oarc.net -- Check your resolver's source port behavior | DNS-OARC

  The announcement in Jul 2008 of CERT VU#800113 made it clear that resolvers should use random source source ports when sending queries. Here at OARC, we crafted a special DNS name and server that you can query to learn whether or not your own resolver is using random ports.

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