Installing WebPageTest tool as Private instance

Hi everyone!

I want to install WebPageTest tool private instance in Remote Desktop Connection. From documentation, I found that 2.18 was the latest release. I downloaded the file (webpagetest_2.18.zip) from (https://github.com/WPOFoundation/webpagetest/releases/tag/WebPageTest-2.18) link. I have doubts on following things:
a) For creating a private instance, do we need to install Web sever, Test Machines?
b) After downloading the tool, I observed files(connectivity.ini) were missing. How to get these files?
c) While doing R&D on tool available online (http://www.webpagetest.org/), I observed that in advance settings, there is a option Keep Test Private. If I select this would my data be secure? If yes, can i use it like a private instance only?

Thanks in advance!!

you’d best check the documentation
https://sites.google.com/a/webpagetest.org/docs/private-instances