The ASA also monitors network ports for rogue activity and detects internal hosts that might be compromised by a botnet network. With this feature, the ASA appliance communicates with an external dynamic database administered by the Cisco Security Intelligence Operations center to identify botnet domains and hosts. You need an extra yearly license fee to enable it. Traffic Filter for Botnet Attacks: This is a licensed feature.The most important of them are the following: This release introduces some new features. All ASA models (from 5505 up to 5580) support the new 8.2 version. If you have a Cisco SMARTnet services contract you can download version 8.2 free of charge. All prior ASA releases (7.0, 7.2, 8.0, and 8.1) can be upgraded to version 8.2. A new software version 8.2 was released for the Cisco ASA 5500 appliance in mid-April 2009.
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