{"id":2100,"date":"2019-03-11T11:23:19","date_gmt":"2019-03-11T11:23:19","guid":{"rendered":"https:\/\/www.galsys.co.uk\/news\/?p=2100"},"modified":"2023-04-28T14:30:22","modified_gmt":"2023-04-28T14:30:22","slug":"what-is-ntp-a-beginners-guide-to-network-time-protocol","status":"publish","type":"post","link":"https:\/\/www.galsys.co.uk\/news\/what-is-ntp-a-beginners-guide-to-network-time-protocol\/","title":{"rendered":"What Is NTP? A Beginner\u2019s Guide to Network Time Protocol"},"content":{"rendered":"\n<p><strong>NTP is an internet protocol that\u2019s used to synchronise the clocks on computer networks to within a few milliseconds of universal coordinated time (UTC). It enables devices to request and receive UTC from a server that, in turn, receives precise time from an atomic clock.<\/strong><\/p>\n\n\n\n<!--more-->\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1110\" height=\"832\" src=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Synchronise-NTP-1110x832.jpg\" alt=\"What Is NTP? Clock showing accurate time.\" class=\"wp-image-2101\" srcset=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Synchronise-NTP-1110x832.jpg 1110w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Synchronise-NTP-400x300.jpg 400w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Synchronise-NTP-768x576.jpg 768w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Synchronise-NTP.jpg 1379w\" sizes=\"auto, (max-width: 1110px) 100vw, 1110px\" \/><\/figure>\n<\/div>\n\n\n<p><a href=\"#What-is-NTP?\">What Is NTP?<\/a> <\/p>\n\n\n\n<p><a href=\"#Why-Is-Time-Synchronisation-Important?\">Why Is Time Synchronisation Important?<\/a><\/p>\n\n\n\n<p><a href=\"#What-Is-UTC-and-How-Is-It-Decided?-\">What Is UTC and How Is It Decided? <\/a><\/p>\n\n\n\n<p><a href=\"#How-Does-NTP-Work?\">How Does NTP Work?<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#NTP-Hierarchy\">NTP Hierarchy: Stratum Levels Explained<\/a><\/li>\n\n\n\n<li><a href=\"#What-Is-SNTP-and-How-Is-It-Different?\">What Is SNTP and How Is It Different?<\/a><\/li>\n\n\n\n<li><a href=\"#Public-NTP-Servers-vs.-Local-NTP-Servers\">Public NTP Servers vs. Local NTP Servers<\/a><\/li>\n<\/ul>\n\n\n\n<p><a href=\"#How-to-Synchronise-Your-Network-with-an-Internal-NTP-Server\">How to Synchronise Your Network with an Internal NTP Server<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#Reference-Clocks\">Reference Clocks<\/a><\/li>\n\n\n\n<li><a href=\"#Time-Receivers\">Time Receivers<\/a><\/li>\n\n\n\n<li><a href=\"#Internal-NTP-Servers\">Internal NTP Servers<\/a><\/li>\n\n\n\n<li><a href=\"#NTP-Clients\">NTP Clients<\/a><\/li>\n<\/ul>\n\n\n\n<p><a href=\"#What-Is-NTP-Conclusion\">What Is NTP? Conclusion<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"What-is-NTP?\">What Is NTP? <\/h2>\n\n\n\n<p class=\"has-very-dark-gray-color has-text-color\">\u201cA man with one watch knows what time it is. A man with two\nwatches is never sure.\u201d<\/p>\n\n\n\n<p class=\"has-very-dark-gray-color has-text-color\">Segal\u2019s law pokes fun at the person who makes no effort to check they\u2019re right while highlighting the complexity of receiving information from more than one source.<\/p>\n\n\n\n<p>When it comes to synchronising your operations, network time\nprotocol (NTP) solves both problems, providing users with the certainty of\naccurate time across a whole network of devices.<\/p>\n\n\n\n<p>Like any network protocol, NTP is a set of rules, or conventions, that dictate how devices on a network should transmit, receive and understand data. Think about it as a shared language, allowing devices to communicate, in this instance, about time.<\/p>\n\n\n\n<p>NTP allows networked devices, such as clocks, phones and\ncomputers, to request and receive time from a server that, in turn, receives precise\ntime from a definitive time source, like an atomic clock. <\/p>\n\n\n\n<p>NTP was developed in the 1980s and is now on version four. Since its release, it\u2019s been used to synchronise the critical systems of businesses, organisations and governments all over the world.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Why-Is-Time-Synchronisation-Important?\">Why Is Time Synchronisation Important?<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1110\" height=\"741\" src=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Train-station-time-1-1110x741.jpg\" alt=\"What Is NTP? Precise time at a train station.\" class=\"wp-image-2103\" srcset=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Train-station-time-1-1110x741.jpg 1110w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Train-station-time-1-450x300.jpg 450w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Train-station-time-1-768x512.jpg 768w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Train-station-time-1.jpg 1379w\" sizes=\"auto, (max-width: 1110px) 100vw, 1110px\" \/><figcaption class=\"wp-element-caption\"> <strong>Precise time is vital to everyday life.<\/strong> <\/figcaption><\/figure>\n\n\n\n<p>As life becomes digitised and\nautomated, exact time is increasingly important:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The telecommunications industry relies on\naccurate time for the transfer of vast amounts of data.<\/li>\n\n\n\n<li>Utility companies use time synchronisation to manage\npower distribution.<\/li>\n\n\n\n<li>Financial services need exact time to timestamp\ntransactions and ensure traceable records.<\/li>\n\n\n\n<li>Satellite navigation depends on precise time, with\na difference of one microsecond causing a positioning error of 300 metres.<sup>1<\/sup>\n<\/li>\n\n\n\n<li>CCTV and speed cameras require an accurate timestamp\nto be admissible as evidence. <\/li>\n\n\n\n<li>Countless businesses rely on precise time to\nmanage their day-to-day processes, such as synchronising clocking-in systems.<\/li>\n<\/ul>\n\n\n\n<p>For organisations of any size, NTP\nis a cost-effective, reliable and user-friendly method of distributing precise\ntime throughout a network, allowing users to <a href=\"https:\/\/www.galsys.co.uk\/news\/ntp-inaccurate-time-silently-killing-company\/\">boost\nproductivity<\/a>, improve customer service, enhance security and more.<\/p>\n\n\n\n<p>Moreover, by using NTP to synchronise to UTC\u2014a global time\nstandard\u2014organisations and governments are able to coordinate international\noperations.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"What-Is-UTC-and-How-Is-It-Decided?-\">What Is UTC and How Is It Decided? <\/h2>\n\n\n\n<p>UTC is the standard the world has agreed on as the basis for civil time. It\u2019s the result of a decades-long process of invention, revision and collaboration, during which time the standard moved from Greenwich Mean Time (GMT), to Atomic Time (TAI), to UTC.<\/p>\n\n\n\n<p>Importantly, UTC is a time standard, not a time zone, which means it\u2019s the same all over the world and isn\u2019t affected by daylight savings. In fact, time zones are expressed according to their offset from UTC (+\/- the number hours).  UTC is maintained by comparing more than 200 atomic clocks located all over the world. The Bureau International des Poids et Measures (BIPM), in France, is responsible for collating this data and generating definitive UTC time.  <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"How-Does-NTP-Work?\">How Does NTP Work?<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1110\" height=\"454\" src=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/NTP-server-package-1110x454.jpg\" alt=\"Galleon Systems GPS NTP time server package.\" class=\"wp-image-2104\" srcset=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/NTP-server-package-1110x454.jpg 1110w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/NTP-server-package-730x298.jpg 730w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/NTP-server-package-768x314.jpg 768w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/NTP-server-package.jpg 1255w\" sizes=\"auto, (max-width: 1110px) 100vw, 1110px\" \/><figcaption class=\"wp-element-caption\"> <strong>A time server and antenna can synchronise a network to UTC.<\/strong> <\/figcaption><\/figure>\n<\/div>\n\n\n<p>NTP makes UTC available to an organisation by taking a time\nsignal from one, or more, atomic clocks and distributing it to networked\ndevices. <\/p>\n\n\n\n<p>At its most basic, an NTP network is comprised of the\ndevices to be synchronised (known as <a href=\"https:\/\/www.galsys.co.uk\/network-clocks-displays\/\">clients<\/a>)\nand an <a href=\"https:\/\/www.galsys.co.uk\/ntp-servers\/radio-ntp-servers.html\">NTP server<\/a>,\nwhich receives UTC time and provides it to the clients.<\/p>\n\n\n\n<p>The clients and server communicate in a series of requests\nand responses:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The client sends an NTP request packet to the\ntime server, stamping the time as it does so (the origin timestamp).<\/li>\n\n\n\n<li>The server stamps the time when the request\npacket is received (the receive timestamp).<\/li>\n\n\n\n<li>The server stamps the time again when it sends a\nresponse packet back to the client (the transmit timestamp).<\/li>\n\n\n\n<li>The client stamps the time when the response\npacket is received (the destination timestamp).<\/li>\n<\/ol>\n\n\n\n<p>This process may only take microseconds, but the timestamps allow the client to account for the roundtrip delay and work out the difference between its internal time and that provided by the server, adjusting itself as necessary and maintaining synchronisation. <\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"NTP-Hierarchy\">NTP Hierarchy: Stratum Levels Explained<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"842\" height=\"595\" src=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Stratum-Levels.png\" alt=\"What Is NTP? NTP hierarchy stratum levels.\" class=\"wp-image-2105\" srcset=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Stratum-Levels.png 842w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Stratum-Levels-425x300.png 425w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Stratum-Levels-768x543.png 768w\" sizes=\"auto, (max-width: 842px) 100vw, 842px\" \/><figcaption class=\"wp-element-caption\"> <strong>Devices on one stratum can provide time to devices on the next.<\/strong> <\/figcaption><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<p>On large networks, there may be so many clients that the\nserver can\u2019t handle requests from all of them. In these instances, servers and\nclients are arranged in a hierarchy of levels called stratums. <\/p>\n\n\n\n<p><a href=\"https:\/\/www.galsys.co.uk\/ntp-servers\/nts-6002-gps-ntp-time-server.html\">Stratum\none servers<\/a> have a direct connection, via a radio or GPS signal,\nwith the primary time source, and they provide that time to clients on stratum\ntwo via a network connection. <\/p>\n\n\n\n<p>In turn,\nstratum two devices can function like a server by providing time to clients on\nstratum three, and those on stratum three can provide it to those on stratum\nfour\u2014and so on. In this way, stratum one devices aren\u2019t overloaded with too\nmany requests. <\/p>\n\n\n\n<p>A total of 15 synchronised stratum levels are possible (stratum 16 is for unsynchronised clients), but each one introduces another layer of network delay, causing accuracy to decrease. To combat this, NTP clients can be set up to request time from multiple servers to help them determine the correct time as closely as possible.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"What-Is-SNTP-and-How-Is-It-Different?\">What Is SNTP and How Is It Different?<\/h2>\n\n\n\n<p>Simple network time protocol (SNTP) is exactly what its name\nsuggests: a stripped-down version of NTP that\u2019s suited to small networks and\ncomputers with limited processing power.<\/p>\n\n\n\n<p>SNTP and NTP share several similarities. For example, the\npackets of data exchanged between the clients and the time server are\nidentical, making any time server compatible with both. <\/p>\n\n\n\n<p>However, SNTP lacks the many algorithms that NTP uses to\ndetermine and maintain synchronisation. <\/p>\n\n\n\n<p>Practically, for instance, NTP calculates the drift rate of\na given clock from the true time and adjusts that rate to maintain the clock\u2019s synchronisation.\nSNTP, on the other hand, allows the clock to drift and then jumps the time\nforward or back to match the true time at given intervals. <\/p>\n\n\n\n<p>Between these intervals, it\u2019s possible for the clock to be\nout of sync, making SNTP unsuitable for applications that demand the highest\nlevels of precision.<\/p>\n\n\n\n<p>SNTP also differs in the number of servers it uses for\nsynchronisation. Whereas NTP allows clients on one stratum to act as servers to\nclients on the next, SNTP is based on a single server-client relationship. <\/p>\n\n\n\n<p>Additional time servers can be specified as backups, but\nSNTP, unlike NTP, is unable to communicate with several servers in order to discern\nwhich is the most accurate. \n\nSNTP was released in the early 1990s to suit the\nlimited processing power of the computers of the day. Today, there are few\ninstances where NTP can\u2019t be handled, but SNTP can still be useful for simple\napplications that don\u2019t require the higher level of precision provided by NTP. \n\n\n\n<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Public-NTP-Servers-vs.-Local-NTP-Servers\">Public NTP Servers vs. Local NTP Servers<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"503\" src=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Galsys-NTP-networks-1.jpg\" alt=\"What Is NTP? How network time servers work behind a firewall.\" class=\"wp-image-2107\" srcset=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Galsys-NTP-networks-1.jpg 650w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Galsys-NTP-networks-1-388x300.jpg 388w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><figcaption class=\"wp-element-caption\"> <strong>Local NTP servers sit inside your firewall, avoiding the vulnerabilities caused by public servers.<\/strong> <\/figcaption><\/figure>\n<\/div>\n\n\n<p>There are two types of NTP servers that you can use to provide UTC time to your network: public servers and local servers.<\/p>\n\n\n\n<p>A public time server is owned and operated by a third party\nwho makes it available for use over the internet. The NTP Pool Project provides\nan online directory of public servers, allowing you to direct your clients to\none of these, free of charge.<\/p>\n\n\n\n<p>Local (aka internal) NTP servers are\nthose you own yourself and install in your premises, establishing a physical\nnetwork connection between your servers and clients.<\/p>\n\n\n\n<p>If synchronised time is critical to your operations, then internal time servers are the safer, more reliable option. They provide improved accuracy and more control while avoiding the various drawbacks of public servers:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/public.png\" alt=\"\" class=\"wp-image-2126\" width=\"614\" height=\"292\"\/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"How-to-Synchronise-Your-Network-with-an-Internal-NTP-Server\">How to Synchronise Your Network with an Internal NTP Server<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"573\" height=\"600\" src=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/GPS-Satellite-1.png\" alt=\"What Is NTP? Synchronising an NTP time server.\" class=\"wp-image-2110\" srcset=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/GPS-Satellite-1.png 573w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/GPS-Satellite-1-287x300.png 287w\" sizes=\"auto, (max-width: 573px) 100vw, 573px\" \/><figcaption class=\"wp-element-caption\"> <strong>A typical set up uses NTP to synchronise a network to a GPS time signal. <\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p>To set up an NTP network with an internal time server, you\nneed a number of things:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A reference clock\/time source that defines and\ntransmits the true time. <\/li>\n\n\n\n<li>A time receiver, in the form of a radio or GPS\nantenna.<\/li>\n\n\n\n<li>An NTP server, which receives the time from the\nantenna and delivers it to a network.<\/li>\n\n\n\n<li>The devices\/clients to be synchronised. &nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Reference-Clocks\">Reference Clocks<\/h3>\n\n\n\n<p>A reference clock is the primary time source that defines and\nprovides UTC time. Atomic clocks are the most accurate type of reference clock,\nproviding near-inconceivable levels of precision. <\/p>\n\n\n\n<p>For instance, the NIST-F2, created by the US National\nInstitute of Standards and Technology, measures the vibration of a caesium atom\nto define a second (9,192,631,770 vibrations per second). If run without\ninterruption, the clock would neither gain or lose one second in 300 million\nyears. <\/p>\n\n\n\n<p>Thankfully, you don\u2019t need to install an atomic clock in\nyour server room to receive precise time. They\u2019re installed in the satellites\nof the global positioning system, and they\u2019re maintained in the laboratories of\nnational standards agencies all over the world. These clocks transmit time\nsignals that you can pick up and use to synchronise your own network.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Time-Receivers\">Time Receivers<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/mushroom-antenna-1.png\" alt=\"What Is NTP? A Galleon Systems GPS antenna.\" class=\"wp-image-2111\" srcset=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/mushroom-antenna-1.png 640w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/mushroom-antenna-1-533x300.png 533w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\"> <br> <strong>GPS antennas can receive a time signal from multiple satellites.<\/strong> <\/figcaption><\/figure>\n<\/div>\n\n\n<p>Each GPS satellite transmits a time signal that anyone can\nreceive with a <a href=\"https:\/\/www.galsys.co.uk\/antennas\/gps-antenna.html\">GPS antenna<\/a>.\nThe global positioning system is designed so that at least four satellites are constantly\navailable from anywhere in the world, making it a highly reliable source of\naccurate time. <\/p>\n\n\n\n<p>Alternatively, <a href=\"https:\/\/www.galsys.co.uk\/antennas\/radio-antenna.html\">radio antennas<\/a>\nreceive a time signal from one of several atomic clocks on earth. The range of\nthese signals is localised, so users have to consider which station provides\nthe strongest signal and use an antenna that\u2019s set to that frequency. <\/p>\n\n\n\n<p>GPS time\nsignals are the most accurate and have the advantage of being globally available.\nHowever, the antenna requires a 360\u00b0 view of the sky, which isn\u2019t possible in\nevery situation. <\/p>\n\n\n\n<p>Radio time signals, on the other hand, can be received\nthrough windows, making a radio time source a good option for premises that don\u2019t\nhave an unobstructed view of the sky. &nbsp;<\/p>\n\n\n\n<p>However, a radio time signal can be affected by topography\nand downtime, making it less reliable and not ideal for synchronising very\ncritical systems.<\/p>\n\n\n\n<p>Either way, the receiver connects to an internal NTP server via a cable that can be up to 1,000 metres long, when used with a power booster, giving businesses lots of flexibility when it comes to installation. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Internal-NTP-Servers\">Internal NTP Servers<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/rackmount-server.png\" alt=\"What Is NTP? A Galleon Systems rackmount NTP time server.\" class=\"wp-image-2113\" srcset=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/rackmount-server.png 640w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/rackmount-server-533x300.png 533w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\"> <strong>A rackmount NTP server installs easily alongside your existing IT hardware.<\/strong> <\/figcaption><\/figure>\n<\/div>\n\n\n<p>An NTP server receives the time from the reference clock,\nvia the antenna, and provides it to your network.<\/p>\n\n\n\n<p>The type of server you choose will depend on a number of\nfactors:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Whether you\u2019re using a GPS or radio time source.<\/li>\n\n\n\n<li>How many clients you want to synchronise.<\/li>\n\n\n\n<li>Whether or not you want to supply time to\nmultiple networks.<\/li>\n\n\n\n<li>What operating system you want to use.<\/li>\n\n\n\n<li>How you want to physically install the server.<\/li>\n<\/ul>\n\n\n\n<p>Choose a <a href=\"https:\/\/www.galsys.co.uk\/ntp-servers\/radio-ntp-servers.html\">radio<\/a>\nor <a href=\"https:\/\/www.galsys.co.uk\/ntp-servers\/gps-ntp-servers.html\">GPS time\nserver<\/a>, depending on which of these sources is the best for you. Alternatively,\n<a href=\"https:\/\/www.galsys.co.uk\/ntp-servers\/dual-ntp-servers.html\">dual time\nservers<\/a> are a good choice for applications that require the highest\nlevel of reliability. These servers use a radio and GPS antenna to receive time\nfrom both, allowing the server to draw time from the strongest source and\nautomatically revert to the other if one signal is lost. <\/p>\n\n\n\n<p>To avoid spending money on features you don\u2019t need, you\nshould match your time server to the size of your network. <\/p>\n\n\n\n<p>The Galleon Systems <a href=\"https:\/\/www.galsys.co.uk\/ntp-servers\/nts-4000-gps-ntp-server.html\">NTS-4000<\/a>\nsynchronises a single network and is ideal for smaller businesses. The <a href=\"https:\/\/www.galsys.co.uk\/ntp-servers\/nts-6002-gps-ntp-time-server.html\">NTS-6002<\/a>\ncan synchronise two independent networks, making it a great choice for\norganisations with separate staff and customer networks. &nbsp;<\/p>\n\n\n\n<p>For the most-demanding applications, the <a href=\"https:\/\/www.galsys.co.uk\/ntp-servers\/nts-8000-gps-ntp-server.html\">NTS-8000<\/a>\ncan synchronise up to six networks\u2014ideal for supplying precise time to\nindependent networks on different floors of a building.<\/p>\n\n\n\n<p>Each of these time servers is capable of synchronising\nthousands of clients, and they\u2019re all available in a radio, GPS or dual\nconfiguration. <\/p>\n\n\n\n<p>Time servers can run on several different operating systems,\nbut any client can access a server running on any OS. For instance, clients\nrunning MacOS can communicate with a Windows time server by using their\nbuilt-in NTP client software.<\/p>\n\n\n\n<p>Finally, choose a server that meets the physical requirements of your space. Many time servers come in a rack-mountable body, allowing you to integrate them alongside your existing IT hardware. Alternatively, you can enjoy the same functionality from a <a href=\"https:\/\/www.galsys.co.uk\/ntp-servers\/nts-4000s-ntp-server.html\">standalone server<\/a>, which sits on any flat surface.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"NTP-Clients\">NTP Clients<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Ethernet-clock.png\" alt=\"What Is NTP? A Galleon Systems Ethernet clock.\" class=\"wp-image-2119\" width=\"545\" height=\"306\" srcset=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Ethernet-clock.png 640w, https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Ethernet-clock-533x300.png 533w\" sizes=\"auto, (max-width: 545px) 100vw, 545px\" \/><figcaption class=\"wp-element-caption\"><br><strong>Ethernet clocks are ideal for displaying precise time throughout your premises. <\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p>Clients are the devices you connect to your time server to\nbe synchronised. Virtually any device can be a client if it meets three\nconditions:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>It has a built-in clock.<\/li>\n\n\n\n<li>It can be connected to a network via an Ethernet\nconnection.<\/li>\n\n\n\n<li>It\u2019s capable of running NTP\/SNTP client\nsoftware.<\/li>\n<\/ul>\n\n\n\n<p>Possible clients include computers, phones, <a href=\"https:\/\/www.galsys.co.uk\/network-clocks-displays\/\">clocks<\/a>, CCTV systems, clocking-in systems, payment terminals and more. <\/p>\n\n\n\n<p>Many devices have NTP client software built-in. If not, <a href=\"https:\/\/www.galsys.co.uk\/ntp-client-software\/\">TimeSync\nsoftware<\/a> is easy to install on Windows devices, allowing you to\nsynchronise a range of clients for a variety of purposes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"What-Is-NTP-Conclusion\">What Is NTP? Conclusion<\/h2>\n\n\n\n<p>NTP provides businesses and\norganisations with a reliable, user-friendly and cost-effective method of time\nsynchronisation. <\/p>\n\n\n\n<p>It\u2019s one of the oldest internet protocols still in use and,\nthough now on version four, retains many of the principles that made it so\npopular in its early years.<\/p>\n\n\n\n<p>By connecting your networked devices to a time server, which receives a signal from a definitive time source, you can enjoy the benefits of precise time in any location, boosting productivity, improving customer service and synchronising your operations. <\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>For a\nno-obligation discussion about implementing NTP in your organisation, contact\nGalleon Systems: 0121 608 7230.<\/strong><\/p>\n\n\n\n<p>____________________<\/p>\n\n\n\n<p><sup>1 <\/sup>Thales Group<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NTP and SNTP are two similar ways of synchronising devices on a network. The<br \/>\nmain difference is in the way each one checks and corrects the time. NTP uses<br \/>\nadvanced algorithms that make it more accurate, while SNTP is simpler but less<br \/>\nprecise. Here\u2019s everything you need to know about the difference between NTP<br \/>\nand SNTP.<\/p>\n","protected":false},"author":13,"featured_media":2101,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[138,159,204,91,206],"class_list":["post-2100","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-network-time-protocol","tag-network-time-servers","tag-ntp-server-2","tag-sntp","tag-time-synchronisation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is NTP? 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Learn about the importance of synchronised time and how to implement network time protocol in your business, today.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.galsys.co.uk\/news\/what-is-ntp-a-beginners-guide-to-network-time-protocol\/\" \/>\n<meta property=\"og:site_name\" content=\"Galleon Systems\" \/>\n<meta property=\"article:published_time\" content=\"2019-03-11T11:23:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-04-28T14:30:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.galsys.co.uk\/news\/wp-content\/uploads\/Synchronise-NTP.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1379\" \/>\n\t<meta property=\"og:image:height\" content=\"1034\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Ben Telford\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@GalleonSystems\" \/>\n<meta name=\"twitter:site\" content=\"@GalleonSystems\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ben Telford\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"12 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.galsys.co.uk\\\/news\\\/what-is-ntp-a-beginners-guide-to-network-time-protocol\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.galsys.co.uk\\\/news\\\/what-is-ntp-a-beginners-guide-to-network-time-protocol\\\/\"},\"author\":{\"name\":\"Ben Telford\",\"@id\":\"https:\\\/\\\/www.galsys.co.uk\\\/news\\\/#\\\/schema\\\/person\\\/e6453688dbc964f07d2dae740e71d7fe\"},\"headline\":\"What Is NTP? 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