Block bruteforce FTP login attempts ?
I was browsing, and found this article : http://www.cyberciti.biz/faq/freebsd-openbsd-pf-stop-ftp-bruteforce-attacks/
Could it be somehow useful / integrated in our preferred open-sourced firewall .. ?
Idea would be to enable this on a per host / port basis maybe ?
You can do exactly what's shown there that on a per-rule basis with the advanced options that are available.