The author experienced a failure in their fail2ban configuration, specifically with a custom jail designed to block AI crawlers that disregard robots.txt. Despite the regular expression appearing to function correctly, the system stopped banning new IPs. A restart of the fail2ban service resolved the issue, with a significant number of IPs being banned shortly after. AI
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IMPACT Minimal impact for AI operators; focuses on a specific server administration issue.
RANK_REASON The article discusses a personal technical issue with a security tool and AI crawlers, lacking broader industry significance.