On 03/02/17 23:10, Robert Scott wrote:
But with other servers, the first
response came back good, the second response came back LI=3, the third
and fourth responses never came back at all. (recvfrom() has to be
aborted).
Is this possibly a defense mechanism against a DOS attack?
See <https://www.eecis.udel.edu/~mills/ntp/html/rate.html>, in
particular the section on Kiss-of-Death. Your code should be
recognizing these and raising an alarm.
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