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6 Cards in this Set
- Front
- Back
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What are access lists used forced? |
Used to filter traffic that passes through a router
ACL filters packets by looking at the IP, TCP, and UDP headers in the packet |
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What are the key features for Cisco ACL? |
Packets can be filtered as they enter an interface Packets can be filtered before they exit an interface Deny is the term used in Cisco IOS to block a packet at the interface that is doing the filtering Permit is the term used in Cisco IOS to allow a packet through the interface that is doing the filtering At the end of every ACL is an implied “deny all traffic” statement. Therefore, if a packet does not match any of your access list statements, it is blocked |
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What are the two types of access lists? |
Standard Extended |
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What is the difference between the two access lists? |
Standard(Examines only source IP) Extended(Examines the source and destination IP + Port Number) |
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Is this an example of of extended or standard ACL? “access-list 1 permit 172.16.0.0 0.0.255.255” |
Standard |
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Is this an example of of extended or standard ACL? “access-list 101 permit tcp 172.16.0.0 0.0.255.255 165.33.15.0 0.0.0.255 eq 23” |
Extended |
