From the course: CompTIA Network+ (N10-009) Cert Prep

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Network time protocol (NTP)

Network time protocol (NTP)

From the course: CompTIA Network+ (N10-009) Cert Prep

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Network time protocol (NTP)

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- One of my favorite movies to watch is "Back to the Future". And one of the coolest scenes is when Doc Brown had all those clocks synchronized and they all went off at the same time. If Doc Brown could do it almost 40 years ago, we can definitely do it today. Enter NTP, Network Time Protocol and it's lightweight buddy, SNTP for Simple Network Time Protocol. They use UDP to sync up clocks and devices on a network. Computers need to be on the same time, so things like Kerberos authentication, work smoothly. Don't stress about Kerberos now. It's just an authentication method that you'll learn about later. If your device needs NTP or SNTP, you can enter the IP address for the server. Keep in mind that in big organizations, this is handled by the admin team. Just also remember that NTP and SNTP both use Port 123. Now, how does all of this actually work? NTP operates in a layered system called Clock Strata. At the top, we've got stratum zero devices and the atomic clocks or the GPS system.…

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