Tiny daemon that bans brute-forcers by tailing logs. Install on any internet-facing Linux box — and on day one of any VPS.
Follow the steps — click any step card to replay the terminal demo from that point. Everything runs in a lab you control.
Shiny-new releases break in weird ways — official sources only, never re-uploads.
This is the exact workflow practitioners use; speed comes from reps, not talent.
Key idea: Tiny daemon that bans brute-forcers by tailing logs. Install on any internet-facing Linux box — and on day one of any VPS.
One advanced flag puts you ahead of most beginners. Write both runs in your notes.
Practice this inside a lab you own — VMs, HTB, THM or intentionally-vulnerable apps.
Read `--help` fully once; the 5 flags you didn't know do half the work.
Document every win in your notes — writeups become your portfolio.
After it works, ask: how would I DETECT this? Switch to blue-team brain.
Use Fail2Ban only on systems you own or have written permission to test. Your lab: Kali + Metasploitable2, DVWA, TryHackMe & HackTheBox — plenty of legal targets, zero risk.