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ACLs Left right and centre

Eagle710

OSNN Senior Addict
#1
Does anyone have a example exercise with ACL configurations?? Im having a hard time learning ACLs for Cisco devices... any help or great tutorials(google didnt help me that much) PLEASE

Eagle710
 
#4
I just need someone to explain to me how the address part and wildcard mask work.... i dont get that

A wildcard of 0.0.0.0 means that the entire IP address must be examined
A wildcard of 255.255.255.255 means that the entire IP address will not be examined


Likewise, if you want to filter all hosts in a subnet that uses subnet mask 255.255.252.0, the wildcard mask 0.0.3.255 matches the network and subnet bits.

Get it?
So if you want to filter out all hosts on 255.255.255.0 subnet, the wildcard mask is 0.0.0.255.
 

Eagle710

OSNN Senior Addict
#5
Thanks celticfan, that made some sense.... im trying to figure the applying mechanisms like to put it on which interface and in/out direction...
 

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