- IETF Data Tracker
Keep track of how draft-ietf-ntp-using-nts-for-ntp-28 is progressing. - Network Time Security for the Network Time Protocol
This memo specifies Network Time Security (NTS), a mechanism for using Transport Layer Security (TLS) and Authenticated Encryption with Associated Data (AEAD) to provide cryptographic security for the client-server mode of the Network Time Protocol (NTP).
- CISA: Time Guidance for Network Operators, CIOs and CISOs
Practical guidance and recommendations for network operators, CIOs, and CISOs on time resilience and security practices in enterprise networks and systems. - How to Use Netnod’s NTS Service
Netnod recently launched a Network Time Security (NTS) service. This page explains how you can start using NTS. It explains how to set up an NTS client and connect to Netnod’s NTS servers. - TimeNL
TimeNL has been set up by experts at SIDN Labs. It’s available for anyone to use, free of charge. - nts.time.nl
SIDN’s NTS Pilot homepage. - NIST Internet time service
Information from The National Institute of Standards and Technology (NIST) on Internet time. - NTP Pool Project
The pool.ntp.org project is a big virtual cluster of timeservers providing reliable easy to use NTP service for millions of clients. - Simple Network Time Servers
Microsoft’s list of the Simple Network Time Protocol (SNTP) time servers that are available on the Internet. - Google’s Public NTP
A free, global time service that you can use to synchronize to Google’s atomic clocks. - Setting up NTS-Secured NTP with NTPsec
A short guide to setting up an NTS-secured NTP client/server with NTPsec. - IETF BCP 223: Network Time Protocol Best Current Practices