Network security trends continue to evolve.  The National Institute of Standards and Technology (NIST) has defined the Zero Trust Architecture (ZTA) which refers to the narrowing of network defense perimeters.  EndRun has a long history of engineering trustworthy and secure network equipment that is inline with this NIST publication. 

EndRun NTP Servers are primarily designed for Stratum 1 operation, but also support Stratum 2. EndRun products can be configured for peering but we don’t recommend it for Stratum 1 Time Servers. This paper explains why. It also explains the difference between Stratum 2 mode and peering.

This paper will show that the NTP and PTP timestamps from EndRun Technologies Network Time Servers are traceable through the National Institute of Standards and Technologies (NIST), and the United States Naval Observatory (USNO) to Coordinated Universal Time (UTC) maintained by the International Bureau of Weights and Measures (BIPM). 

Time is not just an extraneous network service.  Accurate time is essential to determining the order in which events occur and is a fundamental aspect of transaction integrity, logging/auditing, troubleshooting and forensics.  Accurate, reliable time is necessary for financial and legal transactions, transportation and distribution systems, database management and many other applications involving widely distributed resources.