On 07/05/2021 07:57, Iosif Fettich wrote:

Hi there,

the number after the # can change, obviously. I tried this, but fail2ban-regex said it missed:

"security: info: client @0x.* <HOST>#.* (.*): query (cache) .* denied"

So, how would I correct this regex so that it sees this 177.237.40.218 idiot? In under 5 minutes he's tried over 16k queries for the same damn thing.

Try
 "security: info: client @0x.* <HOST>#.* \(.*\): query \(cache\) .* denied"


How important are all the words in the message? Can it be simplified to@

  "security: info: client @0x.* <HOST>#.*denied"


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