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8 Νοε 2022 · Network Time Protocol (NTP) is a protocol that helps the computers clock times to be synchronized in a network. This protocol is an application protocol that is responsible for the synchronization of hosts on a TCP/IP network. NTP was developed by David Mills in 1981 at the University of Delaware.
5 Αυγ 2009 · Over a long period of time with many samples, NTP can actually determine if the computer's clock is slow or fast, and automatically adjust it accordingly, allowing it to keep reasonably good time even if it is later disconnected from the network.
The Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in current use.
This document describes NTP version 4 (NTPv4), which is backwards compatible with NTP version 3 (NTPv3), described in RFC 1305, as well as previous versions of the protocol. NTPv4 includes a modified protocol header to accommodate the Internet Protocol version 6 address family.
NTP uses IP/UDP on destination port 123 to exchange NTP timestamps and accurately calculate the current time within microseconds. Generally, it is a request-response message exchange, as shown in the following high-level diagram.
Network Time Protocol (NTP) is a networking protocol devised to synchronize the clocks of computers over a data network. Originally developed by David L. Mills in 1985, NTP operates over the User Datagram Protocol (UDP) and aims for high accuracy and fault-tolerant timekeeping.
Some examples of how NTP is used are the following: Distributed procedures depend on coordinated times to ensure proper sequences are followed. Security mechanisms depend on consistent timekeeping across the network. File system updates carried out across several computers depend on synchronized clock times.
