Carnegie Mellon University – Best Practices for NTP Services 3.3 3.3.7 Audit and Accountability
This article talks about how NTP works, NTP vulnerabilities, and best practices; configuration of the NTP server.
This article talks about how NTP works, NTP vulnerabilities, and best practices; configuration of the NTP server.
This is a whitepaper from Cisco on the NTP Protocol.
This is Internet Engineering task force’s updated best practices for Network Time Protocol.
This article speaks to NIST's NTP servers that support authentication.