20/10/2013 LDAP

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30th November 2011

What is LDAP ?

Lightweight Directory Access Protocol

Based on X.500

Directory service (RFC1777)

Stores attribute based data

Data generallly read more than written to :

No transactions

No rollback

Hierarchical data structure

Entries are in a tree-like structure called Directory Information Tree (DIT)

Hierachial

[http://2.bp.blogspot.com/-

IXL4CQCnR2k/TtZbU3hMwiI/AAAAAAAAAzE/eHJo6dFN2uk/s1600/directory-tree-

hierachial.png]

Flat

LDAP

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[http://4.bp.blogspot.com/-

J_1XQhvovlQ/TtZbuGixadI/AAAAAAAAAzM/DxRhIWObZPQ/s1600/directory-tree-flat.png]

Client-server model

Consistent view of data

--> Answers request

--> Refer to server with answer

Referrals

[http://3.bp.blogspot.com/-ZpjKb-

3avO4/TtZcTGZwYhI/AAAAAAAAAzU/jLWRYMJOLps/s1600/referral.png]

1. Client requests information

2. Server 1 returns referral to server 2

3. Client resends request to server 2

4. Server 2 returns information to client

Global View

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[http://3.bp.blogspot.com/-9w2Jit8RLU4/TtZc0tz7IoI/AAAAAAAAAzc/w31mpET3U1I/s1600/global.png]

Based on entries

Collection of attributes

Has a distinguished name (DN) - like domain name

Posted 30th November 2011 by Sachin Ghalot

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