Router' ACL- Access Control List

An intranet should be heavily protected by different networking devices, such as router, firewall, proxy server, honeynet, IPS and IDS. This diagram is an overly-simplified version of the reality. I try to put these devices together in a reasonable order. It is only for teaching and learning purpose as I talk about different devices and their functions in different videos.

Router is an important layer 3 device. Without routers, there is no Internet. This video will introduce you only one feature of a router in terms of security: ACL - access control list.


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