This discussion so far has centered around X.500 and the protocols that were developed with it. Although the X.500 directory model is well designed and can be put to a large number of uses, the same cannot be said for the protocols that surround it.

The Directory Access Protocol (DAP) was created to allow clients to interact with an X.500-structured directory. Because of the overhead associated with DAP, and the other protocols related to X.500, the Lightweight Directory Access Protocol (LDAP) was developed. There was no need to throw out all of the work that had been done since 1988 on X.500. There was simply a need to create a smaller, less complicated protocol that could be implemented on multiple platforms that would perform only the ...

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