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NTP protocol

Network Time Protocol

  • Synchronizing the clocs of the system
    • Log files authentication outage deatails
  • Automatic Updates
    • No flasching 12:00 lights
  • Switches routers firewalls servers and workstatio UDP /123
    • Every device has it’s own clock
  • Flexible
    • You control how clocks beeing updated

Stratum

The distance from the original clock refrence Accuracy of an NTP server - Some clock are more accurate then others - Straum 0 if u define the time - Straum 1 synchornized with the straum 0

Configuring

NTP cleint - Specyfie the NTP server addres - Use multiple NTP servers ## NTP server

  • listens to UDP /123
    • Need at leas one clock source
    • Specyfiy the stratum level of choice
      • Response to time request from NTP clients
      • ==Does not modify their own time==

NTP client

  • Request time updates form NTP server

NTP client/server

  • Requests time updates from an NTP server
  • Responds to time request from other NTP clients

Important to plan NTP stategy while creatin an network