Why not have a couple of days or even weeks of server maintenance just to fix this problem again?
You guys have already solved this problem before right ? or did the "attacker" just stopped before and is continuing it again right now ?
I know you guys could fix this.
I suggest having an emergency server maintenance, instead of letting the server up when its gonna keep on having these kinds of problems over and over again.
Players aren't gonna stop b*thching about:
"OMG i cannot connect"
"@$#%@# !!! is the server down again?"
"Failed to connect."