| Title: 4.2.11 - Links and References |
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| # 4.2.11 Links and references |
| |
| The **Apache Directory Server** authorization system is based on the **X.500** |
| specifications. Those documents are available on [X.500 freely available specifications](http://www.x500standard.com/index.php?n=Ig.LatestAvail) |
| , and more specifically [X.501](http://www.itu.int/rec/T-REC-X.501-200811-I!Cor2/dologin.asp?lang=e&id=T-REC-X.501-200811-I!Cor2!PDF-E&type=items) |
| . |
| |
| Some more 'user friendly' documentation about Access Control can be found |
| in **Chadwick**'s book, available at [X.500 book](http://sec.cs.kent.ac.uk/x500book/) |
| , chapter 8. |
