Setting up NTP server

Network Time Protocol, NTP server is  an internet protocol which is responsible for syncing clock to some references.

you may have experience in some situation times are different in different devices. This issue might be lead to big problems. There are so many Time based algorithms are run for different purposes. If one computer time is forward / back to another the algorithm must be failed on running in different devices.

Isolated networks may run their own wrong time, but as soon as you connect to the Internet, effects will be visible. Just imagine some Email message arrived five minutes before it was sent, and there even was a reply two minutes before the message was sent.

I have experienced this issue while using RSA SecurId authenticators. RSA SecurId authenitcation is using the Time based algorithm. I’m runnung RSA Authentication Manager in my local machine and try to run the algorithm. It is some how failed I try to figure out the issue. The RSA Authentication Manager Virtual applicance time is back in 1 minute from my local computer time.

I fixed the above-mentioned issue by setting up the NTP protocol in the RSA Authentication Manager server. It is the same way wherever you are going to setup NTP protocol on a server.

There are so many dedicated servers run for NTP protocol. You can able to find the server from the following link

http://www.pool.ntp.org/en/

How do we setup the NTP server? Just one line of command trigger you to give a correct time.

sntp -P no -r asia.pool.ntp.org

That’s it your server is set to the global time. Consider I set the Asia server. you can set your own region.

Need to read more :

  1. http://www.ntp.org/ntpfaq/NTP-s-def.htm
  2. https://en.wikipedia.org/wiki/Network_Time_Protocol
  3. http://www.pool.ntp.org/en/

Thank you for reading.

 

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