Ntp

It’s 2016 (almost 2017) why is the time off on your system clocks? It became apparent to me that there are some folks out there that do not realize their clocks are off for a reason. Julia Evans recently made a graphic about distributed systems that mentioned clock issues and it made me really sad. Photo Credit: Julia Evans We had a saying when I was in the Air Force, “Timing is everything.” We lugged around GPS receivers that hooked up to our bulk and circuit encryption devices so that they would have accurate, consistent time with other encryption devices around the world. ...

Network Time Protocol (NTP) is a very nice feature for networks that utilize multiple devices that have administrators who view logs on a regular basis, web sites that make financial transactions, and employee time clock management systems (these are just a few examples). NTP is designed to keep accurate local time keeping. Having four different times from four different devices for one event that happened once isn’t a good thing. Having every device in your network set to the same time is highly recommended. Computers and routers by themselves use archaic methods for keeping time. NTP ensures the accuracy of time on all devices that use it. For example, the firewall I use at home will automatically e-mail me an alert when there has been an attempted attack or port scan. My home firewall uses NTP to synchronize its time. Therefore, I can then forward that alert to my ISP and the originating ISP. Upon reviewing the alert they can accurately tell by the time the attack/port scan took place and IP address used which one of their users was the perpetrator. ...