n">Introduction</a></h1>
<p>The <strong>N</strong>etwork <strong>T</strong>ime <strong>P</strong>rotocol (NTP) is a protocol for clock synchronisation across computer systems. Its existence is paramount in order to pinpoint events occurring at a certain moment within a network. Devices with unsynchronised clocks will report that the event transpired at different times thus making it very difficult to figure out the actual time of occurrence.</p>
<p>This protocol works over UDP on port 123.</p>
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