The Simple Network Time Protocol (SNTP) port
Network Time Protocol (NTP) (Building Internet Firewalls, 2nd Edition)
Google NTP Server: Network Time Protocol » Network Interview
myOMRON Europe - myKnowledge
Network Time Protocol - Wikipedia
ICP DAS WISE
Wifi Timing Module/esp8266 Weather Information Weather Station Sntp Module/serial Port 9600 Data Transmission - Abs Sensor - AliExpress
Network Time Security: new NTP authentication mechanism | APNIC Blog
Setting up a Local / Internal NTP Server to allow time synchronization - Communities
NETTIME - SNTP Client
NTP / SNTP Time Server
Configure the SNTP Protocol Using Web Based Management | Brother
Potential security risk (NTP port 123) - Home Network Community
NTP Timeservers
ICP DAS WISE
faq
NTP (Network Time Protocol)
SNTP Agent - emNet Add-Ons
Network Time Security: new NTP authentication mechanism | APNIC Blog
Can a Dedicated NTP Time Server Improve Network Security?
Time Synchronization with NTP
The SNTP protocol
