Rules of Access Control Lists

Before we get into the rules that govern ACLs, we need to understand what an ACL is, the different types of ACLs, and how they work. An ACL is nothing more than an IF and Then statement; IF this happens Then take this action. But the type of ACL in use would allow you to this in many different fashions. There are two types of ACLs: Standard and Extended. A third extension or mutation is a named ACL, and we will be covering all three. Let's break them down using a table so we can clearly see the differences between them:

Type of ACL

Range

Description

Standard

1 – 99

With this type of ACL, we can only use source addresses. That means if we wanted to deny a source address or network to a destination, ...

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