What is the default action of the CSA?

Hi all

I'm a newcomer to the CSA. I have a few questions as follows. Could you please clarify it for me?

1. If all the rules do not match the event, what measures will it take place? Allow or deny?

2. If the first answer is allow, how it can protect the system from the zero-day attack?

Thank you very much

Nitass

Nitass,

You are right that if no rules are triggered, CSA does not interfere with the application. But to answer the second half of your original question, CSA protects attacks zero-day monitoring of behavior rather than signatures. In other words, it doesn't matter what the attack code looks like, no matter what he does. For example, if you get attacked by a new virus, not have a signature for your anti-virus software to detect. But if she tries to install a copy on your computer, or tries to install a rootkit, or open a port for listening or scans for other vulnerable hosts, CSA detects these actions and block them.

Tags: Cisco Security

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