24 Extended access control lists
This chapter covers
- The various parameters extended access control lists use to match packets
- Configuring extended numbered and named ACLs
- Editing ACLs by deleting and resequencing ACEs
In the previous chapter, we covered standard ACLs, which filter packets based on a single parameter: the source IP address. Although standard ACLs have their uses, they are a blunt instrument; they don’t provide precise control over exactly which kinds of traffic are permitted and denied. Extended ACLs, the topic of this chapter, are a more precise tool: they allow you to filter packets based on many more parameters, providing more granular control over traffic.
Although extended ACLs can be more complex than standard ACLs, the ...
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