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Safeguard Authentication Services 4.2 - Defender Integration Guide

Privileged Access Suite for Unix

Unix security simplified

Privileged Access Suite for Unix solves the inherent security and administration issues of Unix-based systems (including Linux and Mac OS X) while making satisfying compliance requirements easier. It unifies and consolidates identities, assigns individual accountability, and enables centralized reporting for user and administrator access to Unix. The Privileged Access Suite for Unix combines an Active Directory bridge and root delegation solutions under a unified console that grants organizations centralized visibility and streamlined administration of identities and access rights across their entire Unix environment.

Active Directory bridge

Achieve unified access control, authentication, authorization, and identity administration for Unix, Linux, and Mac OS X systems by extending them into Active Directory (AD) and taking advantage of AD’s inherent benefits. Patented technology allows non-Windows resources to become part of the AD trusted realm, and extends AD’s security, compliance, and Kerberos-based authentication capabilities to Unix, Linux, and Mac OS X. See for more information about the Active Directory Bridge product.

Root delegation

The Privileged Access Suite for Unix offers two different approaches to delegating the Unix root account. The suite either enhances or replaces sudo, depending on your needs.

  • By choosing to enhance sudo, you will keep everything you know and love about sudo while enhancing it with features like a central sudo policy server, centralized keystroke logs, a sudo event log, and compliance reports for who can do what with sudo.

    See for more information about enhancing sudo.

  • By choosing to replace sudo, you will still be able to delegate the Unix root privilege based on centralized policy reporting on access rights, but with a more granular permission and the ability to log keystrokes on all activities from the time a user logs in, not just the commands that are prefixed with "sudo." In addition, this option implements several additional security features like restricted shells, remote host command execution, and hardened binaries that remove the ability to escape out of commands and gain undetected elevated access.

    See for more information about replacing sudo.

Privileged Access Suite for Unix offers two editions: Standard edition and Advanced edition. Both editions include the Management Console for Unix, a common mangement console that provides a consolidated view and centralized point of management for local Unix users and groups; and Authentication Services, patented technology that allows organizations to extend the security and compliance of Active Directory to Unix, Linux, and Mac OS X platforms and enterprise applications. In addition:

  • The Standard edition licenses you for Privilege Manager for Sudo.
  • The Advanced edition licenses you for Privilege Manager for Unix.

One Identity recommends that you follow these steps:

  1. Install Authentication Services on one machine, so you can set up your Active Directory Forest.
  2. Install Management Console for Unix, so you can perform all the other installation steps from the mangement console.
  3. Add and profile hosts using the mangement console.
  4. Configure the console to use Active Directory.
  5. Deploy client software to remote hosts.

    Depending on which Privileged Access Suite for Unix edition you have purchased, deploy one of the following:

    • Privilege Manager for Unix software (that is, Privilege Manager Agent packages)


    • Privilege Manager for Sudo software (that is, Sudo Plugin packages)

About this guide

The Defender Integration Guide is intended for Windows and non-Windows system administrators, network administrators, consultants, analysts, and any other IT professionals who will be integrating Defender with Authentication Services for token-based two factor authentication. This guide walks you through the process of installing and configuring the necessary Defender access policies and Group Policy settings.

Note: The term "Unix" is used informally throughout the Authentication Services documentation to denote any operating system that closely resembles the trademarked system, UNIX.

Introducing Defender

Defender enhances security by enabling two-factor authentication to network, Web, and applications-based resources. One Identity designed Defender to base all administration and identity management on an organization's existing investment in Active Directory and eliminates the costs and time involved in setting up and maintaining proprietary databases.

One Identity supports Defender integration on all platforms that support Authentication Services, except Mac OS X and AIX 5.2 or earlier.

Note: On AIX 5.3 and later you must use PAM authentication.

In addition, Defender works with any OATH-compliant hardware token enabling organizations to select the most appropriate token for their users. By leveraging an organization's existing investment in Active Directory and supporting multiple token vendors, Defender enables organizations to increase security and achieve and sustain compliance in a cost-effective manner.

Defender integration

Defender provides strong authentication capabilities.

Why is strong authentication an important part of an Active Directory bridge solution?

When Authentication Services integrates Unix with Active Directory, it provides centralized access control and password policy enforcement. However, there are situations where security policies dictate a stronger level of authentication. Authentication Services addresses this need with optional strong authentication capabilities. Customers now can use the same solution for integrated Active Directory authentication and strong authentication. Organizations that have tight security requirements will no longer be forced to purchase and implement a third-party solution.

How is strong authentication used with an Active Directory bridge solution?

An organization may have many Unix systems deployed in a traditional, highly secure DMZ environment. As they are integrated with Active Directory, they will require an Active Directory credential to authenticate. Now, an additional layer of authentication can be added for administrators accessing these systems, using either a hardware or software token.

If an organization has integrated hundreds or thousands of Unix systems with Active Directory, a system administrator can now use the same Active Directory credential to access all of them. An additional level of security can be easily added by requiring the system administrator to use one-time password (OTP) in additional to the Active Directory credential.

How do Authentication Services’ strong authentication capabilities compare to other Active Directory bridge solutions?

Strong authentication combined with an Active Directory bridge is a unique and critical differentiator for One Identity. No other Active Directory bridge vendor offers strong authentication as an integrated part of its solution, and no strong authentication vendor offers Unix coverage and Active Directory integration.

Is there an additional charge for strong authentication with Authentication Services 4.x?

There is no additional cost for strong authentication with Authentication Services 4.x; it is a new feature available to new and upgrading customers.

Authentication Services provides strong authentication for up to 25 users at no additional cost through included licenses and tokens for Authentication Services Defender. These licenses will cover and secure 25 of an organization‘s Unix system administrators. Strong authentication support for additional end-users is available at an additional per-user cost.

How does strong authentication with Authentication Services 4.x work?

Authentication Services:

  • Includes strong authentication modules and native packages for all supported platforms (100+).
  • Remotely deploys and installs the strong authentication module.
  • Provides hardware and software tokens for one-time passwords.
  • Enables policy-based configuration of strong authentication through Active Directory Group Policy.

The following figure describes the flow of events that occur during a Unix or Linux login after both Authentication Services Defender and Authentication Services are configured according to this guide.

Figure 1: Defender Integration

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