The management of computer networks is one of the most difficult aspects of technologies of information and communication (technology ICT). The logistics of the connection of terminals, routers, printers and all other devices can leave many managers with a constant headache. Time synchronization is one of the most important aspects that is often overlooked and can have disastrous consequences. It is imperative that all devices on a network are showing the same time as timestamp or watches dater, the format in which a computer transmits the time between one and the other is the only way to reference a computer can use to establish a sequence of events. If different machines in a network are indicating different times then happen unintended consequences, such as e-mails that arrive until they have technically been sent and other anomalies that will make the headache of even worse Manager. What is more, a network computing is not synchronized is open to security threats and even fraud.
Fortunately, the NTP time server has been for many years and can help relieve the headache of time synchronization. NTP (Network Time Protocol) is one of the oldest protocols used by computer networks. Developed nearly three decades ago NTP is a protocol that automatically checks the time on all the network devices and adds or subtracts long enough to make sure that all are synchronized.NTP requires a reference time to synchronize the clocks of the network. While NTP can synchronize a network at any time, an authoritative source of time is clearly the best solution. UTC (Coordinated Universal time) is a calendar used atomic clocks around the world based on the said date. As atomic clocks lose less than one second of time in more than a thousand years, UTC is undoubtedly the best time source to synchronize to a network.
Not only his network will be perfectly synchronized, but also It will be synchronized at the same time that millions of computer networks around the world. An NTP server can receive a reference to UTC time from various sources. The Internet is the most obvious source, however Internet sync sources are notoriously inaccurate, and which are not can be relatively useless if the distance is too far. In addition, having placed your NTP server securely behind firewall would be in vain having to keep open a hole in it to allow the NTP server polls (poll) synchronization via the web reference and leave the entire vulnerable network, in particular when the NTP (own security measure of the NTP) authentication is not possible over the Internet. There are two much more safe and accurate methods of receiving a sync UTC reference. The first is to use the national time and transmissions of frequencies that various countries broadcast from their national physics laboratories. These tend to be disseminated through long wavelength as It has the advantage of being able to be collected within a server room even while many countries do not have that signal. However, many NTP servers can use the time signal transmitted by atomic clocks aboard GPS (Global Positioning System) satellites. This signal is available everywhere, but requires a GPS antenna that can get a clear view to the sky. Using UTC time source either through the GPS network or by radio transmissions a computer network can be synchronized within a few milliseconds of UTC time.