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One Identity Safeguard for Privileged Sessions 7.0 LTS - Administration Guide

Preface Introduction The concepts of One Identity Safeguard for Privileged Sessions (SPS)
The philosophy of One Identity Safeguard for Privileged Sessions (SPS) Policies Credential Stores Plugin framework Indexing Supported protocols and client applications Modes of operation Connecting to a server through One Identity Safeguard for Privileged Sessions (SPS) Archive and backup concepts Maximizing the scope of auditing IPv6 in One Identity Safeguard for Privileged Sessions (SPS) SSH host keys Authenticating clients using public-key authentication in SSH The gateway authentication process Four-eyes authorization Network interfaces High Availability support in One Identity Safeguard for Privileged Sessions (SPS) Versions and releases of One Identity Safeguard for Privileged Sessions (SPS) Accessing and configuring One Identity Safeguard for Privileged Sessions (SPS)
Cloud deployment considerations The Welcome Wizard and the first login Basic settings
Supported web browsers and operating systems The structure of the web interface Network settings Configuring date and time System logging, SNMP and e-mail alerts Configuring system monitoring on SPS Data and configuration backups Archiving Using plugins Forwarding data to third-party systems Starling integration
User management and access control Managing One Identity Safeguard for Privileged Sessions (SPS)
Controlling One Identity Safeguard for Privileged Sessions (SPS): reboot, shutdown Managing One Identity Safeguard for Privileged Sessions (SPS) clusters Managing a High Availability One Identity Safeguard for Privileged Sessions (SPS) cluster Upgrading One Identity Safeguard for Privileged Sessions (SPS) Managing the One Identity Safeguard for Privileged Sessions (SPS) license Accessing the One Identity Safeguard for Privileged Sessions (SPS) console Sealed mode Out-of-band management of One Identity Safeguard for Privileged Sessions (SPS) Managing the certificates used on One Identity Safeguard for Privileged Sessions (SPS)
General connection settings HTTP-specific settings ICA-specific settings MSSQL-specific settings RDP-specific settings SSH-specific settings Using Sudo with SPS Telnet-specific settings VMware Horizon View connections VNC-specific settings Indexing audit trails Using the Search interface Advanced authentication and authorization techniques Reports The One Identity Safeguard for Privileged Sessions (SPS) REST API One Identity Safeguard for Privileged Sessions (SPS) scenarios Troubleshooting One Identity Safeguard for Privileged Sessions (SPS)
Network troubleshooting Gathering data about system problems Viewing logs on One Identity Safeguard for Privileged Sessions (SPS) Changing log verbosity level of One Identity Safeguard for Privileged Sessions (SPS) Collecting logs and system information for error reporting Collecting logs and system information of the boot process for error reporting Support hotfixes Status history and statistics Troubleshooting a One Identity Safeguard for Privileged Sessions (SPS) cluster Understanding One Identity Safeguard for Privileged Sessions (SPS) RAID status Restoring One Identity Safeguard for Privileged Sessions (SPS) configuration and data VNC is not working with TLS Configuring the IPMI from the BIOS after losing IPMI password Incomplete TSA response received Using UPN usernames in audited SSH connections
Using SPS with SPP Configuring external devices Using SCP with agent-forwarding Security checklist for configuring One Identity Safeguard for Privileged Sessions (SPS) Jumplists for in-product help Configuring SPS to use an LDAP backend Glossary

Using a custom Credential Store plugin to authenticate on the target hosts

The following describes how to configure One Identity Safeguard for Privileged Sessions (SPS) to retrieve the credentials used to login to the target host using a custom plugin.

Prerequisites
  • To use a custom Credential Store plugin, you have to upload a working Credential Store plugin to SPS. This plugin is a script that can be used to access an external Credential Store or Password Manager. If you want to create such a custom Credential Store plugin, contact our Support Team or see the documentation about custom Credential Store plugins.

    For more information on uploading plugins, see Uploading plugins.

    NOTE: Users accessing connections that use Credential Stores to authenticate on the target server must authenticate on SPS using gateway authentication. Therefore, gateway authentication must be configured for these connections. For details, see Configuring gateway authentication.

  • Verify the integrity of the plugin.

    For more information on verifying the integrity of plugins, see Verifying the integrity of a plugin.

To configure SPS to retrieve the credentials used to login to the target host using a custom plugin

  1. Navigate to Policies > Credential Stores.

  2. Click and enter a name for the Credential Store.

  3. Select External Plugin, then select the plugin to use from the Plugin list.

  4. If your plugin supports configuration, then you can create multiple customized configuration instances of the plugin for your site. The Configuration textbox displays the example configuration of the plugin you selected. If you wish to create a customized configuration instance of the plugin for your site, then edit the configuration here.

    NOTE: Plugins created and issued before the release of SPS 5.1 do not support configuration. If you create a configuration for a plugin that does not support this, the affected connection will stop with an error message.

  5. Click .

  6. Navigate to the Connection policy where you want to use the Credential Store (for example, to SSH Control > Connections), select the Credential Store configuration instance to use in the Credential Store field, then click .

Integrating external authentication and authorization systems

One Identity Safeguard for Privileged Sessions (SPS) provides a plugin framework to integrate SPS to external systems to authenticate or authorize the user before authenticating on the target server. Such plugins can also be used to request additional information from the users, for example, to perform multi-factor authentication.

You can use an Authentication and Authorization plugin (aa-plugin) in the following protocols:

  • MSSQL

    Remote Desktop (RDP)

  • Secure Shell (SSH)

  • TELNET

Topics:

How Authentication and Authorization plugins work

If a Connection Policy has an Authentication and Authorization plugin (AA plugin) configured, One Identity Safeguard for Privileged Sessions (SPS) executes the plugin as the last step of the connection authorization phase. SPS can request the client to perform other types of authentication before executing the plugin. Using an AA plugin in a Connection Policy is treated as gateway authentication if:

  • the plugin authenticates the user

  • authentication is successful

  • the plugin returns the gateway_user and gateway_groups elements, identifying the user it has authenticated

Other types of gateway authentication will come before authentication by the AA plugin, so information from any other type of gateway authentication (for example, the username and usergroups of this authentication) will already be available and therefore can be used by the plugin. If the Authentication and Authorization plugin does perform gateway authentication, you can use a Credential Store as well.

However, for technical reasons, the web-based gateway authentication (that is, authenticating on the SPS web interface if the Require Gatweay Authentication on the SPS Web Interface option is selected in the Connection Policy) is performed after the AA plugin, so using AA plugin and ticking Require Gateway Authentication on the SPS Web Interface at the same time is not a valid configuration.

The plugin can interactively request additional information from the client in the SSH, Telnet, and RDP protocols.

NOTE: In SPS 5.8, a user's group membership is determined by querying only the relevant groups configured for the connection from the LDAP/AD server, instead of retrieving all groups of a given user.

This may cause problems when using AD/LDAP-based gateway authentication together with an AA plugin. The AA plugin authorize() hook may be called with only a subset of groups as group membership lookup does not consider groups referenced in the AA plugin code.

As a possible workaround, you can add a rule to the channel policy assigned to the connection that never matches (for example, set the From address to 0.0.0.0/32), but contains all the gateway groups that the plugin requires. This channel rule will never match, but it will cause SPS to evaluate if a user is a member of those groups, and will make them available for the plugin if so.

Note that only groups queried by SPS are affected. Gateway groups returned by the AA plugin authenticate() hook are passed to the authorize() hook unchanged.

SPS executes the authorize method after the authentication method and any inband gateway authentication or inband destination selection steps. As a result, the authorize method already has access to the IP address of the target server and the remote username (the username used in the server-side connection).

Optionally, the plugin can return the gateway_user and gateway_groups values. SPS will only update the gateway username and gateway groups fields in the connection database if the plugin returns the gateway_user and gateway_groups values. The returned gateway_user and gateway_groups values override any such attributes already available on SPS about the connection (that means that channel policy evaluations will be affected), so make sure that the plugin uses the original values appropriately.

If the plugin returns the gateway_user and gateway_groups values, you may have to configure an appropriate Usermapping policy in the Connection Policy. If the plugin returns a gateway_user that is different from the remote user, the connection will fail without a usermapping policy. For details on usermapping policies, see "Configuring usermapping policies" in the Administration Guide.

Prerequisites
  • SPS supports Authentication and Authorization plugins in the RDP, SSH, and TELNET protocols.
  • In RDP, using an AA plugin together with Network Level Authentication in a Connection Policy has the same limitations as using Network Level Authentication without domain membership.
  • In RDP, using an AA plugin requires TLS-encrypted RDP connections. For details, see "Enabling TLS-encryption for RDP connections" in the Administration Guide.

Optionally, the plugin can return the gateway_user and gateway_groups elements. SPS will only update the gateway username and gateway groups fields in the connection database if the plugin returns the gateway_user and gateway_groups elements. The returned gateway username and gateway groups override any such attributes already available on SPS about the connection, so make sure that the plugin uses the original values appropriately.

If the plugin returns the gateway_user and gateway_groups elements, you may have to configure an appropriate Usermapping Policy in the Connection Policy. If the plugin returns a gateway_user that is different from the remote user, the connection will fail without a Usermapping Policy. For details on Usermapping Policies, see "Configuring usermapping policies" in the Administration Guide.

Using a custom Authentication and Authorization plugin to authenticate on the target hosts

The following describes how to configure One Identity Safeguard for Privileged Sessions (SPS) to use an Authentication and Authorization plugin (AA plugin) before accessing the target host.

Prerequisites
  • SPS supports AA plugins in the MSSQL, RDP, SSH, and Telnet protocols.

  • In RDP, using an AA plugin together with Network Level Authentication in a Connection Policy has the same limitations as using Network Level Authentication without domain membership.

  • In RDP, using an AA plugin requires TLS-encrypted RDP connections. For details, see "Enabling TLS-encryption for RDP connections" in the Administration Guide.

To configure SPS to use an Authentication and Authorization plugin before accessing the target host

  1. If your plugin supports configuration, then you can create multiple customized configuration instances of the plugin for your site. Create an instance by completing the following steps:

    1. Navigate to Policies > AA Plugin Configurations. Select the plugin to use from the Plugin list.

    2. The Configuration textbox displays the example configuration of the plugin you selected. You can edit the configuration here if you wish to create a customized instance of the plugin.

      NOTE: Plugins created and issued before the release of SPS 5.1 do not support configuration. If you create a configuration for a plugin that does not support this, the affected connection will stop with an error message.

      Figure 338: Policies > AA Plugin Configurations — Creating a customized plugin configuration instance

  2. Navigate to the Connection policy where you want to use the plugin (for example, to RDP Control > Connections), select the plugin configuration instance to use in the AA plugin field, then click .

  3. If the plugin sets or overrides the gateway username of the connection, configure a Usermapping policy and use it in the Connection policy. For details, see "Configuring usermapping policies" in the Administration Guide.

  4. Verify that the configuration works properly: try to establish a test connection. For details, see "Performing authentication with AA plugin in Remote Desktop connections" in the Administration Guide. If the plugin is configured to store any metadata about the connection, these data will be available in the Additional metadata field of the SPS Search interface.

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