DNS Resolver(s) Tested:

1. 38.107.191.80 appears to have GREAT source port randomness and GREAT transaction ID randomness.

Test time: 2009-11-12 11:56:01 UTC

Note that standard deviation is usually, but not always, a good indicator of randomness. Your brain is a better detector of randomness, so be sure to take a look at the scatter plots below. If you see patterns (such as straight lines), the values are probably less random than reported.

38.107.191.80 Source Port Randomness: GREAT

Number of samples:	25
Unique ports:	25
Range:	1866 - 61250
Modified Standard Deviation:	18307
Bits of Randomness:	16
Values Seen:	11279 28349 56422 24786 61250 4101 60348 55410 45379 34323 27544 30333 37147 46777 23560 1866 17890 20854 49132 39671 9802 50201 15587 32479 4211

38.107.191.80 Transaction ID Randomness: GREAT

Number of samples:	25
Unique txids:	25
Range:	2291 - 64381
Modified Standard Deviation:	20755
Bits of Randomness:	16
Values Seen:	26424 12249 44822 15211 61586 2866 2291 64381 63403 42148 42099 32037 13519 10048 21440 52285 39101 20436 3103 27753 5859 24288 6027 4782 55204

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See CERT VU #800113 for information on the DNS cache poisoning vulnerability.

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