Improve The CrowdSec Multi-Server Installation With HTTPS Between Agents

This article is a follow-up from the Crowdsec multi-server setup. It applies to a configuration with at least two servers (referred to as server-1 and one of server-2 or server-3).

To address security issues posed by clear http communication in our previous crowdsec multi-server installation, we propose solutions to achieve communication between Crowdsec agents over encrypted channels. On top of that, the third solution allows server-2 or server-3 to trust server-1 identity, and avoid man-in -the -middle attacks.