Windows 7, the most recent operating principles from Microsoft is also their first operating principles that automatically synchronizes the Pc clock to an internet source of Utc time (Coordinated Universal Time). From the occasion a Windows 7 computer is switched on and is linked to the Internet it will request time signals from the Microsoft time service - time.windows.com.
While for many home users this will save them the hassle of setting and correcting their clock as it drifts, for company users it may be problematic as internet time sources are not get and receiving a time source through the Udp port on the firewall could lead to security breaches and as Internet time sources can't be authenticated by Ntp (Network Time Protocol) the signals can be hijacked by malicious users.
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This internet time source can be deactivated by occasion the clock and date dialogue box, and occasion the Internet Time tab, clicking the 'Change' setting button and unchecking the 'Synchronize with an Internet time server option.'
Whilst this will unsure no unwanted traffic will be advent through your firewall it will also mean that the Windows 7 motor will not be synchronized to Utc and its timekeeping will be reliant on the motherboard clock, which will ultimately drift.
To synchronize a network of Windows 7 machines to an literal, and get source of Utc then the most practical and simplest clarification is to plug in a dedicated Ntp time server. These connect directly to a router or switch and enable the safe receiving of an atomic clock time source.
Ntp time servers use the very literal, and get Gps signal (Global Positioning System) ready anywhere on the planet or more localized long wave radio signals transmitted by some national physics laboratories such as Nist and Npl.
Time Synchronization on Windows 7
