Microsoft uses court order to take out Waledac botnet
Microsoft has won a court-issued take-down order against scores of domains associated with controlling the spam-spewing Waledac botnet.
The software giant's order allows the temporary cut-off of traffic to 277 Internet domains that form command and control nodes for the network of compromised machines. Infected (zombie) machines are programmed to regularly poll these control points for instructions and spam templates.
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump