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Assessment Title
Rule Text
Two independent sources of time reference are not being utilized.
Description
Discussion Text
NTP provides an efficient and scalable method for managed network elements to actively synchronize to an accurate time source. Insuring that there are always NTP servers available to provide time is critical. It is imperative that all single points of failure for the NTP infrastructure are eliminated. Knowing the correct time is not only crucial for proper network functioning but also for security. Compromising an NTP server opens the door to more sophisticated attacks that include NTP poisoning, replay attacks, and denial of service. Hence, it is imperative that at least two independent sources of time reference are used.
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