From the course: CompTIA Advanced Security Practitioner (CASP+) (CAS-004) Cert Prep

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Firewalls

Firewalls

From the course: CompTIA Advanced Security Practitioner (CASP+) (CAS-004) Cert Prep

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Firewalls

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- While routers can use access control lists to provide some protection filtering for our networks, it's really a dedicated device known as a firewall that excels at using access control lists. Now, access control lists are very important for us to be able to secure our networks from unwanted traffic. A large portion of the permit and deny statements that we utilize in our ACLs are based on port numbers because these directly correlate with an application or service that we wish to allow or to block. Access control lists, or ACLs, are the rule sets that are placed on the firewalls, routers, and other network infrastructure devices that permit or allow traffic through a particular interface. These rule sets will control the flow of traffic into or out of our networks. Now, while access control lists can also be used to help define proper quality of service levels inside of our networks, in this particular video, we're really going to be focusing on their crucial role in the security of…

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