How and with what is it safe to transfer data (server <-> server)?

Question

Digital certificates

Hello. The problem is this:

I need to transfer data (various numbers and commands) from one server A to server B and vice versa.
Specifics :
- Server A is a web server (processes data and saves it in the database, sends commands)
- Server B is a game server (transmits and collects data using a .dll file connected to the game engine) I

thought about using SSL / TSL . The question immediately arises, does the web server need an SSL certificate (https) for such a transfer? What alternatives to SSL/TSL can be used in my case?

Purpose: to secure the transmitted data.

Answer 1

You raise vpn between servers, and drive traffic inside the vpn channel.

Answer 2

ssl - yes, the server needs a self-signed or normal certificate.

Answer 3

I think vpn channel between servers is preferable