Setting Up a IPSec server on my redhat 7.3

[Brian]

I would like to setup an IPSec connection to my desktops, I did find many good websites and how to setup a VPN using FreeBSD, but it’s to confusing. All I need is just enough steps to configure my redhat box 7.3 as a VPN Server, for IPSec.. I am going to be using SSH Sentinel As my windows client.. Is there a better website out there?   Brian