AAA stands for authentication , authorisation and accounting.
Authentication let the user autheicate first before accessing any device like router in your case. Any user if want to access your router the request will first get authenticated via the tacacs or rdauis server.
Authoristion will let the user define its level of authority as what all privilages it has to change on the router.
Accounting will let the tacacs or raduis server to maintain all records as what all changes and who all have dine changes on router and many more details.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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