Access-list Cisco

1. What is Cisco access-list?
2. How do I show access-list on Cisco router?
3. What is an access configuration list?
4. What is access-list in router?

What is Cisco access-list?

An access control list (ACL) consists of one or more access control entries (ACEs) that collectively define the network traffic profile. This profile can then be referenced by Cisco IOS XR Software software features such as traffic filtering, priority or custom queueing, and dynamic access control.

How do I show access-list on Cisco router?

To display the contents of current access lists, use the show access-lists privileged EXEC command. To display the contents of all current IP access lists, use the show ip access-list EXEC command.

What is an access configuration list?

The quick definition: An access control list (ACL) is an ordered list of rules used to filter traffic. Each rule states what's permitted or what's denied. When a packet attempts to enter or leave a router, it's tested against each rule in the list — from first to last.

What is access-list in router?

An access control list (ACL) is a list of rules that specifies which users or systems are granted or denied access to a particular object or system resource. Access control lists are also installed in routers or switches, where they act as filters, managing which traffic can access the network.