Saturday, January 6, 2007

Named Access List

If your router is running IOS 11.2 or higher, you can create named access lists. Instead of choosing a number between 1-99 for standard IP access lists, you can use a custom name allowing for more lists and more convenient management. The commands to create a named access list are different for standard and extended access lists.

To create a named access list, use the following command in global configuration mode:router(config)#ip access-list {standard extended} name

This command will take you into access-list configuration mode where you can define the deny and permit rules. For example to create a named access list with the name wwwfilter and permit only access from the networks 192.168.132.0, 172.17.0.0 and 10.0.0.0 use the following commands:

router(config)#ip access-list standard wwwfilter
router(config-std-nacl)#permit 192.168.132.0 0.0.0.255
router(config-std-nacl)#permit 172.17.0.0 0.0.255.255
router(config-std-nacl)#permit 10.0.0.0 0.255.255.255

Use the exit command to exit access-list configuration mode.A named list is applied to an interface in the same way as with numbered lists:

router(config-if)#ip access-group wwwfilter out


Which of the following answer choices are correct characteristics of named access list?

A. You can delete individual statements in a named access list

B. Named access lists require a numbered range from 1000 to 1099.
C. Named access lists must be specified as standard or extended.
D. You can use the ip access-list command to create named access lists.
E. You cannot delete individual statements in a named access list.
F. You can use the ip name-group command to apply named access lists.

Answer: A, C, D

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