10 things you should know about Cisco IOS access control lists (ACLs)

Access control lists (ACLs) are a fundamental part of working with routers. How much do you know about managing these vital gatekeepers? David Davis lists 10 things every administrator should know about working with Cisco IOS ACLs.

If you work with Cisco routers, you're more than likely familiar with Cisco IOS access control lists (ACLs). But that doesn't mean you know all there is to know about these important gatekeepers. Access lists are an integral part of working with routers, and they're vital to security.

Because ACLs are a fundamental part of router administration, I want to address 10 things you should know about working with these lists. If you're new to working with Cisco routers, this list offers a good foundation to get you started. But even if you've worked with Cisco routers for a while, it never hurts to review the basics-you might even learn something new

This handy, three-page list covers 10 things you need to know about Cisco IOS access lists, beginning with the basic definition of an ACL.Join this ongoing discussion and let us know if this list provides helpful information and if there's anything we can do to improve the document's format or content.