Hardening

How to Install and Configure Fail2Ban for SSH on Debian

The SSH protocol uses encryption to secure the connection between a client and a server.

Config #server { listen [::]:443 ssl http2; listen 443 ssl http2; server_name _; ssl_reject_handshake on; } server { listen 80; listen [::]:80; server_name _; return 444; } Reload nginx: