Directory User Agent

What Does Directory User Agent Mean?

A directory user agent (DUA) is a type of software user agent that accesses a directory on behalf of the user agent within an X.500 communication network or environment. It is used in the X.500 messaging system to communicate user queries with the directory.


Techopedia Explains Directory User Agent

A directory user agent primarily serves as an intermediate client between the end user or software element and the X.500 directory. Typically, the DUA connects and communicates with the X.500 directory for receiving and managing directory data for the configured user or software. DUA can access a directory for a standard user or for another software element. In addition to X.500, the DUA is also used in various client/server computing environments for managing directory services of users.


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Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.