- Manages time-based passwords
- Validates encrypted key exchanges
- Validates Encryption Certificates
- Provides correlation of security and network events
Three modes:
- Client/Server
- Multicast
- Broadcast
UDP port 123
NTP synchronization can take a long time, gap between current clock and NTP
Stratum will always be the initial tie breaker
show clock ntp master (1-15) ntp server IP show ntp associations show ntp status ntp peer IP