问题内容: I am setting up Fail2ban on my server, recently got a lots bad bots is crawling my site cause my SQL server down From my Apache2 logs 51.255.65.13 - - [10/Dec/2017:12:03:19 +0800] "GET /crew/nm0935095-gary-winick HTTP/1.0" 200 17985 "-" "Mozilla/5.0 (compatible; AhrefsBot/5.2; +http://ahrefs.com/robot/)" 51.255.65.30 - - [10/Dec/2017:12:03:31 +0800] "GET /movie/tt0498567-summer-time-machine-blues HTTP/1.0" 200 17658 "-" "Mozilla/5.0