UFW, fail2ban and blocking portscans oh my! – dodwell.us
SSH Brute-force Protection With Fail2Ban
How To Prevent SSH Brute Force Attacks Using Fail2ban In Linux - OSTechNix
Fail2Ban Privilege Escalation | by Angelo Pio Amirante | Medium
I just got scanned by these IP at the same 170.187.164.226,117.20.113.150,142.93.8.29,172.104.139.59, it seems like scanning for vulnerability luckily got caught by fail2ban and ban them : r/unRAID