How to block null/blank user-agents in IIS 7.5
- by Jeremy
We are going through a large scale DDOS attack, but it isn't the typical bot-net that our Cisco Guard can handle, it is a BitTorrent attack. This is new to me, so I am unsure how to stop it.
Here are the stats
IIS is processing between 40 and 100 requests per second from BitTorrent clients.
We have about 20% of the User Agents, but the other 75% are blank.
We want to block the blank user agents at the server level.
What is the best approach?