- time.nrc.ca
- tick.utoronto.ca
- tock.utoronto.ca
-
www.ntp.org has pool.ntp.org which provides round-robin services.
Firewalls: Port 123 needs to be open to UDP traffic.
Note: Use tier 3 NTP sources. When end users use tier 1 or 2 it causes many problems. There is no advantage in using a tier 1. Your ISP should have an NTP server.
