Limit Connections Per IP Windows 2008 R2 x64

windows firewall 64-bit rules ipfw

For IIS at least one option is Dynamic IP Restrictions which is a supported addon for IIS 7 from Microsoft. It's features include:

Dynamically blocking of requests from IP address based on either of the following criteria:

  • The number of concurrent requests.
  • The number of requests over a period of time.

It can be installed with the Web Platform Installer and integrates fully with IIS 7.0 Manager.

enter image description here

For other services/ports it is usually better to also use a solution or technique specific to it. A common one is banning an ipaddress for a while after several failed login attempts within a short period of time (like denyhosts or fail2ban on Linux/Unix systems) for services like SSH and RDP. An example for Windows would be ts_block which does it for Terminal Server connections.

Related

When to give up on math? [closed]
Applications of the Hahn-Banach Theorems
Finite field, I don't quite understand the concept
Why is it that when proving trig identities, one must work both sides independently?
$\frac{16}{27} \left( \frac a{b+c} + \frac b{a+c} +\frac c{a+b} \right) ^3 + \left( \frac{abc}{(a+b)(b+c)(a+c)}\right)^{\frac{1}{3}} \geq \frac52$
The Ellipse Problem - finding an ellipse inside a triangle
Commutative Algebra without the axiom of choice
Tables and histories of methods of finding $\int\sec x\,dx$?
Solving a Nonlinear Recursion
Hilbert's Original Proof of the Nullstellensatz
An Intuitive Explanation of the Transfer Homomorphism
A homomorphism from $(\mathbb{Q},+)\rightarrow (\mathbb{Q},+)$