Create Filter

Defines a custom Fail2Ban filter, that is the pattern that matches offending lines in a log file. A filter does nothing on its own; combine it with thresholds and an action by creating a jail.

Overview

URL: /admin/settings/fail2ban-filters/create

Reached from Settings > Security > Fail2Ban, the Filters tab, then New Filter. The breadcrumb reads Settings > Filters > Create.

Fields

• Local Filter Profile - pick one of the filters shipped with Fail2Ban to pre-fill the form. The list covers the local filters and the panel's own, so you can start from something close and adjust it.
• Name (required) - a descriptive name, for example nginx-ratelimit or wordpress-auth. The name is what a jail refers to.
• Content - the filter definition, in Fail2Ban's own format. Leave it empty to start from a blank definition.

Actions

• Create - save the filter and return to the list.
• Create & create another - save it and reopen an empty form.
• Cancel - return to the list without saving.

Once saved, the filter appears in the panel filters list, where Test regex lets you check it against sample log lines before a jail depends on it.