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Related Flashcards
Cards In This Set
| Front | Back |
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A wildcard mask substitute for the word: Host
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0.0.0.0
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A wildcard mask substitute for the word: any
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255.255.255.255
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What statement is similar to:
access-list 1 permit 0.0.0.0 255.255.255.255
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Access-list 1 permit any
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What statement is similar to:
access-list 1 permit 172.30.16.29 0.0.0.0
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Access-list 1 permit host 172.30.16.29
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Denies access to a host with the IP address of 130.120.110.100.
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Access-list 101 deny ip any 130.120.110.100 0.0.0.0
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Permit access only to the HTTP port on the host 130.120.110.100.
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Access-list 101 permit tcp any130.120.110.100 0.0.0.0 eq 80
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Following Q6: deny all other access to the host 130.120.110.100
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Access-list 101 deny ip any 130.120.110.100 0.0.0.0
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block of addresses to be BLOCKED: 192.168.20.0 thru 192.168.20.255 /24
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Access-list 1 deny any 192.168.20.0 0.0.0.255
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BLOCKED: 209.212.190.0 thru 209.212.190.7 /29
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Access-list 1 deny any 209.212.190.0 0.0.0.7
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Structure of Extended Access List
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Access-list #
permit/deny
IP or ICMP (optional: TCP or UDP)
Source ip address
Source ip wildcard mask
Destination ip address
Destination ip wildcard mask
(optional: eq gt lt neq)
(optional: TCP or UDP)
|
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Structure of Standard Access List
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Access-list #
permit/deny
source ip address
source ip wildcard mask
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What is the wild card mask of 255.255.255.0 ?
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255.255.255.255
- 255.255.255.0
---------------------------
0.0.0.255
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What is the wild card mask of 255.255.255.192 ?
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255.255.255.255
- 255.255.255.192
------------------------
0.0.0.63
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What is the wilcard mask of /30 ?
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255.255.255.255
/30 = 255.255.255.252
-------------------------------
0.0.0.3
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