Experiences and feedback on anti-DDOS solution

["phion wong" <just4while () gmail com>]

Hi all,

I am tasked with evaluating the current anti-DDOS solution on the
market. I am looking for feedback from people who have used the
following anti-ddos solution:

Arbor Peakflow
ISS Network Anomaly Detection System
Cisco Traffic Anomaly Detectors and Cisco Guard


Any problems faced while using them? How efficient are their anti-ddos
capabilities? If you have used any other solutions (other then the
various IPS, we are not really looking at IPS currently), please do
recommend.

Thanks and regards,