Where is UTC time source of TimeServer NTP?
There are several sources where a UTC time reference can be taken. The Internet is the most vast source with hundreds of pretty accurate TimeServers relaying their UTC time signals. However these are known to be inaccurate. Also the Internet is not a secure source and is not suitable for any network where critical accuracy and security of time source issues are a concern. Other methods exist, that provide a more accurate, secure and reliable source of UTC time is to either use the national time broadcast on long-wave or GPS.
