vi /etc/fail2ban/filter.d/owncloud.conf

[Definition]
failregex={.*Login failed: \'.*\' \(Remote IP: \'<HOST>\'\)"}
ignoreregex =

vi /etc/fail2ban/jail.d/owncloud.conf

[owncloud]
enabled = true
filter = owncloud
ignoreip = 127.0.0.1/8 192.168.1.47 194.44.219.161 194.44.219.163 194.44.219.164
#action = smeserver-iptables[port="$port",protocol=tcp,bantime=$bantime]
logpath = /var/www/html/owncloud/data/owncloud.log
maxretry = 3
port = 80,443
bantime = 10800
protocol = tcp