jail.local

# Create a new jail via Plesk
# generated in /etc/fail2ban/jail.local
[wp-auth]
enabled = true
filter = wp-auth
action = iptables-multiport[name=NoAuthFailures, port="http,https"]
logpath = /var/www/vhosts/system/*/logs/*access*log
/var/log/httpd/*access_log
maxretry = 15

wp-auth.conf

# Create a filter via Plesk
# or create your own as root: /etc/fail2ban/filter.d/wp-auth.conf
[Definition]
failregex = <HOST>.*] "POST /wp-login.php
ignoreregex =