while fail2ban is indeed a common tool for a hosting server, it doesn't really need a gui, its a pure server-administration task. still, a nice through-thought gui for fail2ban might be interesting, but as a plugin or a separate tool like http://siobud.com/blog/installing-fail2web i-MSCP should stay a hosting management panel (reseller/customer management), other tools as a plugin or separate, else i-MSCP will become an "Jack of all trades" if anbody wants to make a plugin, this might be helpful https://github.com/Sean-Der/fail2rest
