From the course: Cisco CCNP Security SNCF v1.1 (Exam 300-710) Cert Prep

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Prefilter policies

Prefilter policies

- Inside the Cisco Next-Generation Firewall, why in the world will we choose to use pre-filtered policies? Find out next right here on ITProTV. - [Announcer] You're watching ITProTV. (gentle music) - There is no doubt that firewalls filter, but what in the world is pre-filtering really about? Anthony Sequeira is here to tell us. So we understand what a firewall really does, it inspects traffic. But why do we need something to pre-filter our filters, Anthony? What are we talking about here? - Yeah, this is really interesting, Ronnie. It really does come down to the fact, Ronnie, that these devices, these Firepower Threat Defense systems, they can do so much with a packet that we want to cut down on that workload whenever possible. There is so much inspection and so much that can be checked. That's one of the beauties of the Firepower Threat Defense system. But wait a minute, we don't want that going on for traffic we…

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