Anyone know how to block/prevent IP spoofing in windows 2008 servers using windows firewall/IPSec? I am using Windows dedicated server and my server not in hardware firewall, my server getting IP spoof attack regularly so network is getting really slow. I want to prevent/stop such attack on my server to get stable. I know there is easy option in linux (add an entry in sysctl.conf and /etc/host.conf) but I don't know in windows.

Awaiting for your reply Guys!

What's your setup - do you have a direct internet connection into your server? Do you have a hardware firewall or are you relying entirely on the Windows firewall? If so, I don't believe it is sophisticated enough to do that. I'd recommend you get a good hardware firewall - which one will depend on your setup and budget.