How to prevent DOS attack from outside

[ledola100]

Hello everybody,
I have a question, i need help.
How to prevent DOS attack from win 7 outside router,
Ip web server: 10.10.30.134 (DMZ)
Ip public web server: 10.10.40.133 (Router)
I need things ?
I used gns3 and vmware

[muswellhillbilly]

http://www.esecurityplanet.com/network-security/5-tips-for-fighting-ddos-attacks.html