Hello,
my name is Josef, i'm freelance sysadmin from Czech Republic, and i would like to offer you my services.
I understand your requirements, and have experience with fail2ban, logs processing and regular expression. It's hard to bid correct amount, because your description is too generic. If you considering me for this project, please contact me by chat with more information about the tasks to be done.
I'm looking forward to our cooperation.
Kind regards,
Josef