NTP
Network Time Protocol
Application Layer — Monitoring & Management
Protocol Overview
Full Name
Network Time Protocol
Abbreviation
NTP
OSI Layer
Application Layer
Category
Monitoring & Management
Default Port
123
RFC
RFC 5905
About NTP
Protocol for clock synchronization across networks. Achieves millisecond-level accuracy using a hierarchy of time sources (strata).
Application Layer
Monitoring & Management
Port 123
Standards Reference
NTP is defined in RFC 5905, published by the Internet Engineering Task Force (IETF). RFCs are the official standards documents for internet protocols and are freely available for public review.