I am practicing for my CCNA exam and a question on an exam engine about ACLs shows in the output for "show ip interface" a line:
"Inbound access list is stop-packets"
What does that mean? I didn't read about "stop-packets" in the book.
"stop-packets" is the name of an access list which is assigned to that interface to filter data packets as they flow into the router. Access lists can be identified by name or by number. In this case the access list is a named access list.
As you may remember an access list contains some number of statements which may have permit statements and or deny statements. The access list is applied to an interface to identify which traffic should be permitted to go through and which traffic should be denied and dropped.