On 13/12/2020 06:36, Mike wrote:
2020-12-13 00:29:36,200 fail2ban.filtersystemd [1026]: NOTICE Jail
started without 'journalmatch' set. Jail regexs will be checked
against all journal entries, which is not advised for performance
reasons.
Can someone explain that to me? Is this error global to f2b or
specific to a particular jail? What does this feature do and how do I
enable it?
This may help (found via Google):
https://github.com/fail2ban/fail2ban/issues/959
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