Re: any recommendable anti-ddos solution?

With updates in the Cisco 7600 series routers and Catalyst 6500 switches, 
coupled with Arbor Networks Peakflow traffic monitoring this is possible.

Software for the Cisco Traffic Anomaly Detector XT appliance and Cisco Traffic 
Anomaly Detector Service Module monitors customer networks for attacks, learns 
"baseline" network behavior, and shares that baseline behavior and 
customer-defined policies with the ISP.

Currently the way it works is DDoS traffic is diverted to a "scrubbing center" 
at the network core, where Cisco DDoS Guard technology, acquired with Riverhead 
Networks in March 2004 and embedded in Catalyst 6500 Series routers, sorts out 
attack traffic and forwards legitimate traffic on to its destination.