NTP

Network Time Protocol

How computer clocks synchronize over a network

The NTP software package, the official reference implementation of the Network Time Protocol.

NTP is a protocol designed to synchronize the clocks of computers over a network. NTP version 3 is an internet draft standard, formalized in RFC 1305. NTP version 4 is a significant revision of the NTP standard, and is the current development version, but has not been formalized in an RFC. Simple NTP (SNTP) version 4 is described in RFC 2030.

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