Enable and Disable IPSec VPN Service
To enable IPSec VPN Service, follow the steps below.
Step 1. Under Networking & Security -> NSX Edges -> Double click the NSX Edge Device you would like to enable IPSec VPN on.
Step 2. Under Manage -> VPN select IPsec VPN
Step 3. Click Enable then Publish Changes
It really is as simple as that. Once you have finished, you will want to Configure the Global IPSec VPN parameters.