subject: Using Windows 7 – Reasons Your Network Still Needs an NTP Server [print this page] For true accuracy and security, there is no replacement for your network's own stratum 1 NTP server. Not only are these devices secure, receiving a time source externally to the firewall (often using GPS) but also they receive these signals direct from atomic clocks (The GPS satellite that transmits this signal has an onboard atomic clock that generates the time.
Using Windows 7 Reasons Your Network Still Needs an NTP Server