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access lists

wapalu

hello all,
i'm wapalu. will be sitting soon for the CCNA. can someone explain advanced access control lists, and any guides on where one could get some exercises to practice building access-list as a whole?
thnx.

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Comments

miller811

What materials are you currently using to study for the CCNA?

WilliamK99

wapalu wrote: »

hello all,
i'm wapalu. will be sitting soon for the CCNA. can someone explain advanced access control lists, and any guides on where one could get some exercises to practice building access-list as a whole?
thnx.

Any study guide or CCNA book should have an extensive section on ACLs, also , if you google Access Control Lists, you can find quite a few links to help you out.

jason_lunde

Dude, just grab a router and start with
Router(config)access-list ?

Worlds of options open up to you!

wapalu

i'm currently using todd lammles 6th edition

mella060

You really only need to know the standard and extended ACL's for the CCNA.

skwira001

wapalu wrote: »

hello all,
i'm wapalu. will be sitting soon for the CCNA. can someone explain advanced access control lists, and any guides on where one could get some exercises to practice building access-list as a whole?
thnx.

You mean extended access list. Standard access lists only filter based on the source IP address. Extended access lists can filter both on source and destination IP addresses as well as the source and destination port numbers.

To understand the wild car mask, you typically use the inverse mask. If you know how to subnet, you just take the magic number and subtract 1 from it, and you've got your wild card mask. For example, if you have a subnet mask of 255.255.255.224, your magic number is 32. Our wild card mask looks like this 0.0.0.31.