Hi guys,
Many times clients find their website down. On contacting the web host they come to know that their website is down because of DDOS attack. What exactly is this Distributed-Denial-of-Service attack? Marson(2002) states that distributed DoS attack occurs when a hacker hijacks machines across the Internet and uses them to send a flood of requests to a server until it becomes overwhelmed and stops functioning.
I am just wondering is ICMP blocking only the solution for this?

Our data center offers FloodGuard – DDOS mitigation

try to find the source of attack and report it

I think you are right.
Blocking ICMP might prevent this problem.
Any thoughts?

You should attempt to report the attack to a government agency. The FBI is supposed to become involved, perhaps contacting the data center to find out possible resouces ?? That is terrible that someone would do that to your service. If I come across any info to you help you, I will post it here. good luck