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switch# config t Enters configuration mode. Step 2 switch(config)# ip access-list List1 permit ip any any Configures an IPv4-ACL called List1 and permits IP traffic from any source address to any destination address. switch(config)# no ip access-list List1 permit ip any any Removes the IPv4-ACL called List1. Step 3 switch(config)# ip access-list List1 deny tcp any any Updates List1 to deny TCP traffic from any source address to any destination address.
