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One Identity Safeguard for Privileged Sessions 6.0.3 - RADIUS Multi-Factor Authentication - Overview

Introduction

This document describes how you can use the services of RADIUS server (for example, RSA SecurID Access and FreeRADIUS) to authenticate the sessions of your privileged users with One Identity Safeguard for Privileged Sessions (SPS).

One Identity Safeguard for Privileged Sessions:

One Identity Safeguard for Privileged Sessions (SPS) controls privileged access to remote IT systems, records activities in searchable, movie-like audit trails, and prevents malicious actions. SPS is a quickly deployable enterprise device, completely independent from clients and servers — integrating seamlessly into existing networks. It captures the activity data necessary for user profiling and enables full user session drill down for forensic investigations.

SPS acts as a central authentication gateway, enforcing strong authentication before users access sensitive IT assets. SPS can integrate with remote user directories to resolve the group memberships of users who access nonpublic information. Credentials for accessing information systems can be retrieved transparently from SPS's local Credential Store or a third-party password management system. This method protects the confidentiality of passwords as users can never access them. When used together with RADIUS server (or another Multi-Factor Authentication (MFA) provider), SPS directs all connections to the authentication tool, and upon successful authentication, it permits the user to access the information system.

Integrating RSA with SPS:

SPS can interact with your RSA Authentication Manager and can automatically request strong Multi-Factor Authentication for your privileged users who are accessing the servers and services protected by SPS. When used together with RSA SecurID Access, SPS prompts the user for a second factor authentication, and upon successful authentication, it permits the user to access the information system.

The integration adds an additional security layer to the gateway authentication performed on SPS. If the user has a RSA SecurID Hardware Token, the user can generate a One-Time Password (OTP) using the device. This will be used for the authentication to the One Identity platform. The one-time password is changed after 60 seconds.

Integrating a generic RADIUS server with SPS:

SPS can interact with your RADIUS server and can automatically request strong multi-factor authentication for your privileged users who are accessing the servers and services protected by SPS.

The integration adds an additional security layer to the gateway authentication performed on SPS. Your RADIUS server can use any hardware or software token as long as it provides standard RADIUS interface.

Meet compliance requirements

ISO 27001, ISO 27018, SOC 2, and other regulations and industry standards include authentication-related requirements, (for example, Multi-Factor Authentication (MFA) for accessing production systems, and the logging of all administrative sessions). In addition to other requirements, using SPS and RADIUS server helps you comply with the following requirements:

  • PCI DSS 8.3: Secure all individual non-console administrative access and all remote access to the cardholder data environment (CDE) using MFA.

  • PART 500.12 Multi-Factor Authentication: Covered entities are required to apply MFA for:

    • Each individual accessing the covered entity’s internal systems.

    • Authorized access to database servers that allow access to nonpublic information.

    • Third parties accessing nonpublic information.

  • NIST 800-53 IA-2, Identification and Authentication, network access to privileged accounts: The information system implements MFA for network access to privileged accounts.

How SPS and RADIUS MFA work together

Figure 1: How SPS and RADIUS server work together

  1. A user attempts to log in to a protected server.

  2. Gateway authentication on SPS

    SPS receives the connection request and authenticates the user. SPS can authenticate the user to a number of external user directories, for example, LDAP, Microsoft Active Directory, or RADIUS. This authentication is the first factor.

  3. Authentication using RADIUS server

    If gateway authentication is successful, SPS connects to the RADIUS server. Then SPS requests the second authentication factor from the user and sends it to the RADIUS server for verification.

  4. If multi-factor authentication is successful, the user can start working, while SPS records the user's activities. (Optionally, SPS can retrieve credentials from a local or external credential store or password vault, and perform authentication on the server with credentials that are not known to the user.)

    Alternatively, the RADIUS server might request Access-Challenge response. The challenge is displayed to the user and they have to respond to the challenge. After a successful response, the user can start working. In RSA SecurID, this process is used for next token mode. This means that if the password is entered incorrectly several times, two subsequent RSA SecurID tokens have to be entered for a successful authentication.

Technical requirements

In order to successfully connect SPS with RADIUS server, you need the following components.

In RSA:
  • An RSA Authentication Manager deployed.

  • RADIUS access parameters, (for example, host, port, and an RSA shared secret). You will need it to configure the SPS plugin.

  • Your users must be enrolled in RSA Authentication Manager.

  • The users must be able to perform the authentication required for the factor (for example, possess the required RSA SecurID Hardware Token).

  • Only CHAP and PAP authentication methods are supported.

In a generic RADIUS server:
  • RADIUS access parameters, (for example, host, port, and a shared secret). You will need it to configure the SPS plugin.

  • Your users must be enrolled in the RADIUS server or its backend.

  • Only CHAP and PAP authentication methods are supported.

In SPS:
  • A One Identity Safeguard for Privileged Sessions appliance (virtual or physical), at least version 5 F11.

  • A copy of the SPS RADIUS (RSA) Multi-Factor Authentication plugin. This plugin is an Authentication and Authorization (AA) plugin customized to work with the RSA multi-factor authentication service.

  • SPS must be able to access the RADIUS port of the RADIUS server.

Availability and support of the plugin

The SPS RADIUS (RSA) Multi-Factor Authentication plugin is available as-is, free of charge to every SPS customer from the Plugin Page. In case you need any customizations or additional features, contact our Support Team.

Caution:

Using custom plugins in SPS is recommended only if you are familiar with both Python and SPS. Product support applies only to SPS: that is, until the entry point of the Python code and passing the specified arguments to the Python code. One Identity is not responsible for the quality, resource requirements, or any bugs in the Python code, nor any crashes, service outages, or any other damage caused by the improper use of this feature, unless explicitly stated in a contract with One Identity. If you want to create a custom plugin, contact our Support Team for details and instructions.

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