Security · 1h ago
Fail2ban recidive jail tuned to block distributed SSH attacks
A server admin struggled with persistent SSH brute-force attacks that evaded standard fail2ban rules by rotating IPs after few attempts. By adjusting the recidive jail to a 30-day window and 3 max retries, long-term bans were enforced. The change successfully blocked repeat offenders without false positives from dynamic IPs.
Meridian48 take
This practical tweak shows that default security tool settings often need customization to counter real-world attack patterns, especially distributed ones.
fail2banssh-attacks