D-Link’s IPS service adopts a unique technology – component-based signatures, which are built to recognize and protect against all varieties of known and unknown attacks, and which address all critical aspects of an attack or potential attack including payload, NOP sled, infection, and exploits. In terms of signature coverage, the IPS database includes attack information and data from a global attack sensor-grid and exploits collected from public sites such as the National Vulnerability Database and Bugtrax. D-Link is committed to deliver high quality IPS signatures by constantly creating and optimizing NetDefend signatures via the D-Link Auto-Signature Sensor System. Without overloading existing security appliances, D-Link IPS signatures ensure a high ratio of detection accuracy and the lowest ratio of false positives. This license works only with DFL-260/DFL-260E and cannot be activated on any other model. Please make sure you are buying the correct license for your model. Once received, there are no returns or refunds on license keys. For RMA exchanges on products with activated licenses, please contact D-Link Support directly at support.dlink.com. Do not RMA the product through the Distributor. Please consult the DFL Series Firewall product pages and datasheet for more details.