Lock out after to many login attempts?

[Christopher K. Johnson]

Jamie McParland wrote:

>I'm looking for some software that will drop packets after they try to many
>unsuccessful login attempts. I know it's out there and I have used it before
>but for the life of me I cannot remember the name of the software.
>
>Thanks,
>Jamie 
>  
>
Did you really mean packets?

Would an account lockout suffice?  If so, check out the pam_tally pam 
module.