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How do you explain fail2ban quickly?
How do you explain fail2ban quickly? fail2ban watches logs for repeated failures and temporarily bans those IPs with firewall rules. After 5 failed SSH logins (Example data), the IP is blocked for a while. “fail2ban cuts brute-force noise, but it’s not a replacement for key-only login and SG allow-l
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What this card says
Short answer
fail2ban watches logs for repeated failures and temporarily bans those IPs with firewall rules.
Example
After 5 failed SSH logins (Example data), the IP is blocked for a while.
Say it in the interview
“fail2ban cuts brute-force noise, but it’s not a replacement for key-only login and SG allow-lists.”
Why it matters
It reduces noise, yet strong auth is still the real defence.
Learn more in the lesson: 46.8 SOC, IR, Hardening and Cryptography Questions