INTRODUCTION TO NTP
The Network Time Protocol is the standard Internet protocol that exchanges time information among hosts connected on a network. NTP uses standard port 123 to exchange messages over IP networks. The following sections define terminology used with NTP.
NTP Client
The NTP client is a machine that synchronizes its time with a reference time source. Depending on configuration, a client can listen to broadcast time messages from the NTP server, or it can poll a particular server on a regular basis.
NTP Server
The NTP server provides time synchronization information to other servers and clients. Depending on configuration, it might or might not get its own time synchronization information from other NTP servers.
Stratum Level ...
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