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Er is een interessante discussie met onderwerp On the 'randomness' of DNS gaande op [url=http://www.mail-archive.com/cryptography%40metzdowd.com/]de cryptography maillijst (webbased) die begint met [url=http://www.mail-archive.com/cryptography%40metzdowd.com/msg09546.html]deze bijdrage van [url=http://en.wikipedia.org/wiki/Ben_Laurie]Ben Laurie waarin hij stelt dat je de output van de bekende DNS tests niet mag vertrouwen voor wat betreft de randomness:Ever since the recent DNS alert people have been testing their DNS servers with various cute things that measure how many source ports you use, and how "random" they are. Not forgetting the command line versions, of course dig +short porttest.dns-oarc.net TXT dig +short txidtest.dns-oarc.net TXT which yield output along the lines of "aaa.bbb.ccc.ddd is GREAT: 27 queries in 12.7 seconds from 27 ports with std dev 15253" But just how GREAT is that, really? Well, we don't know. Why? Because there isn't actually a way test for randomness. Daar heeft ...
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