On 6/27/24 8:01 AM, Christopher Schultz wrote:
"100 404s in a minute per-IP"
Actually, what I was seeing, once the webapp developer pointed me in the right direction, was several dozen 404s per *second* from a single IP.
Not sure if Fail2ban would even work in this situation: like the overwhelming majority of the customer Tomcat installations we've done, this one is running on an IBM Midrange box (AS/400, iSeries, or whatever IBM is calling it this week). Which is probably how the huge amount of CPU usage was so easy to spot: WRKACTJOB is more user-friendly than any Linux-equivalent (or Mac-equivalent or WinDoze-equivalent) I've seen.
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