# IT:AD:Authentication, Authorisation, Accounting (AAA) #

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* [[../|(UP)]]
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* See also:
  * [[IT/AD/AAAS/]]
  * [[IT/AD/Radius/]]
  * [[IT/AD/Diameter/]]
  * [[IT/AD/8A/]]


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<panel title="Summary">

AAA (or [[IT/AD/3A/|3A]]) is a well-known acronym for:

* *Authenticated*
* *Authorised*
* *Accounting* (it's not Accounting as you may find sometimes listed).

Sometimes referred to [[IT/AD/Diameter/|Diameter Protocol]].


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## Notes ##

Cute. But also redundant. *Authorised* implies *Authenticated*.




## Resources ##

* https://en.wikipedia.org/wiki/Diameter_protocol