How to set up a VPN in a special way?

Question

linux

Hello!
How to set up a VPN server in which all nodes will be independent. At the same time, identification, encryption, access rights and routes are configured on the server. When the client connects to the server, the server sends configs, paths, routes of network nodes. It is also important that the server needs to be configured only once, and when connecting new clients, only them must be configured. ONLY connections to its network go through the server, and all other connections go directly!
Requirements:
1. Authentication and encryption!
2. Support both L3 (IP) and L2 (Ethernet, *Frame Relay, Tocken Ring)
3. OS support: Windows, Linux, Mikrotik and Cisco hardware.
How to implement this, what protocols and technologies to use and what to do?!
Ps It was already discussed on the toaster, but I did not see the answer there!
Pps Help, please, don't ignore!!!
Pss Phrases like: "Why is this necessary?" and for what?" please do not write!

Answer 1

Do I understand correctly that this is our new incarnation of the champion of delusional questions Freedom_Toster , he is also Nickname_not_name? The same style, the same "qualitatively absurd" nonsense, as if a person is sitting, reading Oliferov and, in the course of reading, gives out some enchanting things that you can't think of on purpose ...

Answer 2

Cisco DMVPN

Answer 3

Why l2?
it is not clear why AD is in the subject of minecraft administration ...
Do the simplest vpn, and then resolve the routing from the server.
At least install the same Mikrotik x86 ...
well, or on linux

Answer 4

If the existing vpn servers do not suit you - what's the problem, write your own.

Answer 5

you can break your head with this
https://habr.com/en/post/208782/