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One Identity Safeguard for Privileged Sessions 7.5 - 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 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 Cleaning up audit data Using plugins Forwarding data to third-party systems Starling integration
User management and access control
Login settings Managing One Identity Safeguard for Privileged Sessions (SPS) users locally Setting password policies for local users Managing local user groups Managing One Identity Safeguard for Privileged Sessions (SPS) users from an LDAP database Authenticating users to a RADIUS server Authenticating users with X.509 certificates Authenticating users with SAML2 Managing user rights and usergroups Creating rules for restricting access to search audit data Displaying the privileges of users and user groups Listing and searching configuration changes
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

Relayed authentication methods

For the server-side connection (between One Identity Safeguard for Privileged Sessions (SPS) and the target server), the following authentication methods are available.

NOTE: Even though these settings refer to the server-side connection, the client must support the selected authentication method and have it enabled. For example, to use publickey authentication on the server side, the client must support publickey authentication as well as provide a fake publickey, even if a different authentication method is used on the client side.

The Connection Policy will ignore the settings for server-side authentication (set under Relayed authentication methods for SSH protocol) if a Credential Store is used in the Connection Policy.

Figure 237: Traffic Controls > SSH > Authentication Policies — Configuring relayed authentication methods

  • Password: Authentication based on username and password. The server will request a password from the user, even if a password-based authentication was already successful on the client-side.

  • Keyboard-Interactive: Authentication based on exchanging messages between the user and the server. This method includes authentication schemes like S/Key or TIS authentication. Note that depending on the configuration of the SSH server, password-based authentication can also require using the keyboard-interactive authentication method.

  • Public Key: Authentication based on public-private encryption keypairs. SPS supports the following public-key authentication scenarios:

    • Publish to LDAP: SPS generates a keypair, and uses this keypair in the server-side connection. The public key of this keypair is also uploaded to the LDAP database set in the LDAP Server of the connection policy. That way the server can authenticate the client to the generated public key stored under the user's username in the LDAP database.

    • Fix: Uses the specified private key in the server-side connection.

    • Agent: Allow the client to use agent-forwarding, and use its own keypair on the server-side.

      During agent-forwarding, the following keys are accepted:

      • rsa

      • ed25519

      • ecdsa-sha2-nistp256

      • ecdsa-sha2-nistp384

      • ecdsa-sha2-nistp521

      If this option is used, SPS requests the client to use its SSH agent to authenticate on the target server. Therefore, you must configure your clients to enable agent forwarding, otherwise authentication will fail. For details on enabling agent forwarding in your SSH application, see the documentation of the application.

      TIP: Some clients may override agent forwarding requests for SFTP and SCP by default. For further information about ensuring access to the server in this case, see Using SCP with agent-forwarding.

    TIP: One Identity recommends using 2048-bit RSA keys (or stronger).

  • Kerberos: Authentication based on Kerberos. Only available if you selected Kerberos as the gateway authentication method. For more information, see Kerberos authentication settings.

Configuring your Kerberos environment

To integrate One Identity Safeguard for Privileged Sessions (SPS) with your Kerberos environment, so that your clients can authenticate on the target servers using Kerberos tickets, you have to configure your environment appropriately.

To configure your Kerberos environment

  1. Configure your DNS server.

    1. On your Domain Name Server (DNS), add SRV records that describe which Key Distribution Center (KDC) belongs to the domain. Add both TCP and UDP entries for each domain. For example, if your domain is example.com and the hostname of your KDC server is kdc.example.com, this entry looks like:

      _kerberos._tcp.example.com 0 0 88 kdc.example.com
_kerberos._udp.example.com 0 0 88 kdc.example.com

    2. If your environment uses multiple realms, repeat the previous step for every realm.

    3. Verify that the servers that your clients will connect to via SPS have proper reverse-dns entries. Otherwise, your clients cannot access the target servers if you use the Inband destination selection feature of SPS.

  2. Create a keytab file for SPS.

    1. On your KDC server, create a principal for the SPS host, using the domain name of your SPS. For example:

      host/scb.example.com@EXAMPLE.COM

    2. If your environment uses multiple realms, repeat the previous step on the KDC of every realm.

    3. Export the key of the principal into a keytab file.

    4. If your environment uses multiple realms, merge the keytab files of the different realms into a single file, for example, using the ktadd or the ktutil utilities.

    5. If your environment uses multiple realms, repeat the previous step on the KDC of every realm.

  3. Configure the SSH application of your client hosts to enable Kerberos (GSSAPI) ticket forwarding. (In most applications this is disabled by default.)

Expected result

You have configured your environment to use Kerberos authentication with SPS, and created a keytab file for your SPS host. For details on uploading the keytab file and configuring SPS see Kerberos authentication settings.

Kerberos authentication settings

The following describes how to perform authentication with Kerberos. One Identity Safeguard for Privileged Sessions (SPS) supports both end-to-end Kerberos authentication, when the client authenticates on SPS gateway and on the target server using Kerberos, and also the half-sided Kerberos scenario when Kerberos is used only on the SPS gateway.

Prerequisites

Before configuring Kerberos authentication on One Identity Safeguard for Privileged Sessions (SPS), make sure you have configured your Kerberos environment correctly and have retrieved the keytab file. For details, see Configuring your Kerberos environment.

To perform authentication with Kerberos

  1. Navigate to Traffic Controls > SSH > Authentication Policies.

  2. Create a new Authentication Policy.

  3. Select the authentication methods to use on the SPS gateway and on the target server.

    • To use Kerberos authentication on the target server, you must use Kerberos authentication both on the SPS gateway and on the target server. Select Gateway authentication method > Kerberos and Relayed authentication methods > Kerberos.

    • To use Kerberos authentication only on the SPS gateway (that is, in the client-side connection), select Gateway authentication method > Kerberos. If required, you can select other gateway authentication methods in addition to Kerberos, and also authentication backends and related to the selected gateway authentication methods.

      Select the authentication methods you want to use on the target server in the Relayed authentication methods field.

  4. Click .

  5. Navigate to Traffic Controls > SSH > Global Options > GSSAPI.

  6. Browse for the Kerberos keytab file, and click Upload. The uploaded principals are displayed in Currently uploaded principals.

    If a Connection Policy uses an SSH Authentication Policy with Kerberos authentication together with a Usermapping Policy, then SPS stores the user principal as the gateway user, and the target username as the server username in the session database. If you want to allow your users to use a username on the target server that is different from their principal, configure a Usermapping Policy for your SSH connections. For details, see "Configuring usermapping policies" in the Administration Guide.

    Click .

  7. (Optional) If more than one realm is deployed on your network, you have to specify the mapping from the server's DNS domain name to the name of its realm. To map hostnames onto Kerberos realms, click .

  8. Navigate to Traffic Controls > SSH > Connections and configure the SSH connection as follows. For details on configuring connections in general, see Configuring connections.

    1. Select Use fixed address or Inband destination selection as Target.

    2. Select the Kerberos Authentication policy.

    3. Click .

Server host keys

The host keys of the trusted servers can be managed on the Traffic Controls > SSH > Server Host Keys page. When a client tries to connect to a server, One Identity Safeguard for Privileged Sessions (SPS) verifies the host key of the server. SPS allows connections only to the servers listed on this page, unless the Accept key for the first time or the Accept certificate for the first time option is enabled in the connection policy.

Figure 238: Traffic Controls > SSH > Server Host Keys — Server host keys

To filter, start typing into the Filter field. For example, enter rsa or an IP address and only relevant results are displayed.

Figure 239: Traffic Controls > SSH > Server Host Keys — Filtered RSA host keys

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