Black Hole Routing
Black hole routing (or black hole filtering) is often used to dynamically block hosts that are attacking your network. These hosts are typically found using a network or host IDS.
For More Information
|Recommended:||Black Hole Routing Tutorial at NANOG|
|Useful:||Blog on Black Hole Routing from Nick Buraglio|
|Blog on Black Hole Routing from David Davis|
Note that this should only be done by experienced network engineers, as it is fairly easy to break your network if done incorrectly.