Module 8: Access Control Lists Flashcards
1
Q
What is a ACL?
A
a ACL is a series of IOS commands used to filter packets based on information found in the packet header.
2
Q
What is a ACE?
A
Access command entry, which becomes a ACL
3
Q
What two layers does packet filtering occur?
A
layers 3 and 4, network and transport
4
Q
What are two types of ACLs?
A
Named and Numbered
5
Q
Which is the preffered method to use?
A
Named
6
Q
What does the ip access-list command do?
A
Creates a named ACL
7
Q
How do you calculate a wildcard mask?
A
subtract it from 255.255.255.255
8
Q
What keyword substitutes for 0.0.0.0?
A
host - bits need to match
9
Q
What keyword substitutes for 255.255.255.255
A
any - bits dont need to match
