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# Unix Realm-->Configuration

Tasks Related Topics Attributes

## Overview

The UNIX security realm executes a small native program, `wlauth`, to look up users and groups and to authenticate users on the basis of their UNIX login names and passwords. The UNIX security realm can only be used on the Solaris and Linux platforms. Use this page to define a name for the realm and the name of the program used to authenticate users in the UNIX security realm.

When using the UNIX security realm, you must configure a Caching realm. When configuring the Caching realm, select the UNIX security realm as the Basic realm. The Basic attribute defines the association between the Caching realm and the UNIX security realm.

To use the UNIX security realm, you need to use Compatibility security. The use of the UNIX security realm is deprecated in this release of WebLogic Server.

## Tasks

Configuring the wlauth Program for the UNIX Security Realm

Adding a Note to the UNIX Security Realm

Configuring the UNIX Security Realm

## Related Topics

Introduction to WebLogic Security

Managing WebLogic Security

Securing WebLogic Resources

Programmimg WebLogic Security

Developing Security Providers for WebLogic Server

Securing a Production Environment

The Security topics in the WebLogic Server 8.1 Upgrade Guide

Security FAQ

The Security page in the WebLogic Server documentation

## Attributes

Table 148-1

Attribute Label | Description | Value Constraints
--- | --- | ---
Name | The name of this configuration. |
Auth Program | The name of the program used to authenticate users in the UNIX security realm. In most cases, the name of the program is `wlauth`. The authentication program must run `setuid root`. If the program name is `wlauth` and is in the `CLASSPATH`, you need not explicitly set this attribute; leave the attribute blank. If the program name is different than `wlauth`, ir of it is not in the `CLASSPATH` of WebLogic Server, specify this attribute. | Default: "wlauth"
Realm Classname | The realmClassName attribute of the BasicRealmMBean object. |