Cisco Firepower 1010 Getting Started Guide
This video tutorial provide complete information to deploy and configure L2TP IPSec VPN on Windows server 2019.
See also:
https://help.keenetic.com/hc/en-us/articles/360010326360-Connecting-to-an-L2TP-IPSec-VPN-server-from-iOS
https://learn.microsoft.com/en-us/windows-server/remote/remote-access/get-started-install-ras-as-vpn
more graphical and thorough: https://www.snel.com/support/how-to-set-up-an-l2tp-ipsec-vpn-on-windows-server-2019/
This document describes how to configure an Internet Key Exchange version 1 (IKEv1) IPsec site-to-site tunnel between a Cisco 5515-X Series Adaptive
So that's what this VAP business is all about.
Cisco ASA 5506-X Series Quick Start Guide -Quick Start Guide: Cisco ASA 5506-X Series Quick Start Guide
Good comparison of common VPN tools and their weaknesses
might be a way around having to add a VPN to get to a webcam
Cheaper than BTGuard and TorGuard.