NewInstance

I just posted last tip Improving security on OpenSSH, in wich I thought about a way to tell SSH daemon to black list host responsibles of too many fail login attempts. After some googling I found this: pam_abl. I tryied it, but had no chance to make it work as I need: I disabled PAM from sshd_config.
If someone knows a solution that works with SSH also without PAM, please tell me! Thanks in advance.