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+The Network Time Protocol (NTP) is used to synchronize the time of a
+computer client or server to another server or reference time source,
+such as a radio or satellite receiver or modem.
+
+It provides client accuracies typically within a millisecond on LANs
+and up to a few tens of milliseconds on WANs relative to a primary
+server synchronized to Coordinated Universal Time (UTC) via a Global
+Positioning Service (GPS) receiver, for example.
+
+Typical NTP configurations utilize multiple redundant servers and diverse
+network paths, in order to achieve high accuracy and reliability.
+
+Some configurations include cryptographic authentication to prevent
+accidental or malicious protocol attacks.
+
+See homepage for more infos:
+
+ http://www.eecis.udel.edu/~ntp/