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Another hotfiksov Cisco Security Agent (hereinafter CSA), intrusion prevention system at the host (HIPS) for operating systems Windows, Solaris and Linux. The system monitors the behavior of the application code running on the machine, local network connections and identify anomalies in their work, to determine whether to allow this activity . The obvious advantage of such systems to prevent attacks is that they do not require attack signatures. The system has the architecture of an agent server. Features CSA Once installed on the target system CSA begins to monitor system resources and make a table with information about everything that happens in the system. Using these tables, CSA ensures that the pre-set rules of behavior of this system are not violated. The agent monitors all that is possible: the use and access to files and applications, network transactions, access to the registry, use the kernel, access to COM objects and other system components. The purpose of all this: to guarantee the excellent work of the system according to set rules. With such a deep knowledge of everything that happens in the real-time CSA can control whether to allow or forbid the action items. This occurs when certain actions are made by a user or malicious code tries to execute himself. When the CSA discovers that the request can not be resolved in accordance with local security policy, the agent blocks the action and sends the wrong message about the system behavior. Nestled deep in the system and directly controlling it, and any of its behavior, the agent performs multiple roles, preventing both known and unknown attacks, including the following features:
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