"I have a Netscreen 5XP. I'm getting barraged by someone attempting to add themselves as a user, literally more than one million times, using IPs from the outside, but would be within my subnet mask. The message that I get is "the user limit has been exceeded and (my subnet).xxx cannot be added". The "xxx" is being replaced with every possible entry in that subnet."
So, the request is: any ideas? Ideally, ways to make the attacker go AWAY. Any pain and suffering this might cause the attacker would be just fine, too.