Originally Posted by saharabear
I do not think fail2ban should solve these type of ip address.
Indeed it shouldn't. Try using a regex like
failregex = ^(?:(?![0-9\.]* -.*"[A-Z]* /)<HOST>)
as listed in the fail2ban wiki HOWTO_apache_proxy_filter
and please do
post information about listening local services and their configuration (as in 'grep ^# /path/to/configurationfile|grep .').