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Cisco Ccna (640-553) Security Training: Using The Access-list Dynamic-extend Command
Network administrators (like you) use the “access-list dynamic-extend” to allow the absolute timer of the dynamic access control list (ACL) to be extended an additional six minutes. In other words, after you’ve enabled the lock-and-key function by using the access-enable command and attempt to create a Telnet session to the router to re-authenticate yourself; you can use “access-list dynamic-extend” command to extend the absolute timer of the dynamic ACL by six minutes. Note: If you need to use the command, make sure you implement it before the ACL expires. Below is the command’s syntax: access-list dynamic-extend As you can see, the command is really easy to use; it doesn’t have any keywords or arguments. And, here’s an example of the command being typed on a router. Router>enable Router#configure terminal Router(config)#access-list dynamic-extend Router(config)#exit Router#copy run start In the example above, the router is being configured with the command. And, like with mostly all Cisco IOS commands; you can use the word “no” in front of the command to remove (disable) the configured command; like you see below: Router(config)#no access-list dynamic-extend By the way, if you decide to use the command, make sure your router(s) is running Cisco IOS 12.1(5)T or higher. I hope this article was very informative and helped you quickly understand the usage of the access-list dynamic-extend command. If you need to learn more; I suggest you visit my website, were you’ll find the latest information regarding the Cisco CCNA (640-553) Security exam techniques. To your success, Article Directory: http://www.articledashboard.com Charles Ross, CCNP #CSCO10444244 is the owner of Ittechtips.com; where you'll find free comprehensive information and videos on how to pass the CCNA (640-553) security exam. Sign-Up for "100 Free Videos" and, also learn more about the new "Cisco CCNA (640-553) Video Accelerated Training Course" at his website. www.ittechtips.com |
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