- Plesk Onyx for Linux
Global counter of failed attempts in Tools & Settings > IP Address Banning (Fail2Ban) > Settings is not applied to jails: instead, the ones specified in jails are used.
This is Plesk bug with ID #PPPM-9993 , which is planned to be fixed in one of the future product updates.
maxretry parameter is not allowed for jails. When the it is set for jails, it overrides the global value.
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As a workaround, update
maxretry parameter for required jails using this guide.