安装：
wget https://raw.githubusercontent.com/FunctionClub/Fail2ban/master/fail2ban.sh bash fail2ban.sh
卸载：
wget https://raw.githubusercontent.com/FunctionClub/Fail2ban/master/uninstall.sh bash uninstall.sh
原文：https://www.ixh.me/2016/12/fail2ban-onekey/