Ensuring the synchronization of the computer network is vital in modern computer networks. The synchronization not only between different machines in a network, but also each computer network that communicates with other networks must also be synchronized with them.
UTC (Coordinated Universal Time) is a global timeline that allows you to synchronize networks in other parts of the world. Network synchronization with UTC is relatively simple thanks to NTP (Network Time Protocol), a software protocol designed for this purpose.
Most operating systems, including the latest version of Microsoft for Windows 7, have an NTP version (often in simplified form, known as SNTP), which allows you to use a time source to synchronize each computer and device on the network.
Atomic clocks are the final devices for tracking time.
Their precision is incredible, as they will not deviate for two full seconds for a million years and, compared to the following chronometers, like an electronic clock that can deviate for one second a week, atomic clock software are incredibly accurate.
Atomic clocks are used throughout the world and are the basis of many modern technologies, allowing the use of many applications that we take for granted. Internet commerce, satellite navigation, air traffic control and international banking are industries that depend to a large extent on
They also regulate the world time frame, UTC (coordinated universal time), which is stored in the constellation of this clock (although UTC must be adjusted to compensate for the deceleration of Earth’s rotation by adding jump seconds).
It often requires that computer networks be synchronized with UTC. This synchronization is vital in networks that perform transactions based on time or that require a high level of security.
The selection of a source for this time reference is the only real problem with network synchronization.
There are three main places where you can get UTC time:
There are many sources of Internet time, and the latest version of Windows (Windows 7) is automatically synchronized with the Microsoft time server at time.windows.com, so if Internet time is adequate, Windows users 7 do not need to change their configuration. However, for computer networks where security is a problem, the sources of time on the Internet can leave the system vulnerable, since the time must be obtained through a firewall, which makes the UDP port remain open. This can be used by intruders. In addition, there is no authentication with an Internet time source, so the time code can be captured before it enters your network.
The GPS is available in the UTC time source of the 365 days, 24 hours. Accurate and secure delivery over time through a firewall through the GPS satellite signal, time synchronization with GPS.
Generally issued by national physical laboratories such as NIST in the USA. UU And the NPL of the United Kingdom, time signals are received through a long wave and are also external to the firewall, so they are safe and accurate.
A special NTP time server can receive radio and GPS signals to ensure accuracy and security.