Protecting Hosted Windows 2008 Servers against DDOS Attacks

ddoswindows-server-2008

Followup to Identifying DDOS Attacks on Windows 2008 Servers.

What steps are people taking to prevent DDOS attacks against their Windows 2008 Servers in a hosted environment?

I'm particularly interested in ways that don't involve a separate hardware firewall, but rather things that can be done with software or configuration of the server itself.

MS has an article called How To: Harden the TCP/IP Stack. Does anyone have experience (or thoughts) on the success of those steps?

Best Answer

In practice, at the small scale you simply can't protect from a real DDOS as even ignoring resource usage issues it's very easy for even a thousand machines to swamp quite a large connection.

The only real things to do is standard config and hardening, ensuring only what's needed is running, and that what is needed it configured optimally.

Hopefully your ISP / colo will have some procedures to fix some things at their end if there are any attacks. However, unless you're a gambling, pornography or other (legal) fringe site such an attack is extremely unlikely.