![]() One server might fail, hence you need at least two. by mail, SNMP, syslog, info displays, and so on. Your own devices can alert you in case of failures, e.g.Furthermore, you have low network latency and jitter compared to routed packets through the Internet. All NTP connections are routed within your own network, hence no one on the Internet can spoof your packets.Your whole company gets almost exactly the same time since they’re using the same NTP servers throughout your enterprise which is not the case if every single device uses the NTP pool on its own which results in using hundreds of different NTP servers.You can uniformly control your servers, such as inserting leap seconds. You can rely on your own hardware and its validity because it is not easy to alter them at all (as long as they reside in your own physically secured data centre). ![]() That is: You should not rely on the time codes of a single foreign country. You should use at least three different external sources such as Galileo, DCF77, and GPS. Using own antennas for external sources omits the dependency on single third parties.Unknown NTP servers might be out of sync or not reachable over time. ![]()
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