How to Apply an Access List to an Interface in Cisco IOS

What is the Cisco IOS command used to apply an access list to an interface?

Which command should be used specifically in the interface configuration mode?

Answer:

The correct Cisco IOS command to apply an access list to an interface is router(config-if)# ip access-group.

When configuring access lists in Cisco Internetwork Operating System (IOS), it is crucial to understand the correct command to apply an access list to an interface. The command router(config-if)# ip access-group is used in the interface configuration mode to specify which access list should be used for filtering incoming or outgoing traffic on that interface.

It's important to note that using the right command is essential for effectively controlling the traffic flow on your network. By applying an access list to an interface, you can control which packets are allowed or denied based on the rules defined in the access list.