Editing Clock synchronization (section)

===Network Time Protocol===
[[Network Time Protocol]] (NTP) is a highly robust protocol, widely deployed throughout the Internet. Well tested over the years, it is generally regarded as the state of the art in distributed time synchronization protocols for [[unreliable network]]s. It can reduce synchronization offsets to times of the order of a few milliseconds over the public Internet and to sub-millisecond levels over [[local area network]]s.

A simplified version of the NTP protocol, [[Simple Network Time Protocol]] (SNTP), can also be used as a pure single-shot stateless [[Master/slave (technology)|primary/secondary]] synchronization protocol, but lacks the sophisticated features of NTP, and thus has much lower performance and reliability levels.