立即与支持人员聊天
与支持团队交流

One Identity Safeguard for Privileged Sessions 6.5.0 - Administration Guide

Preface Introduction The concepts of One Identity Safeguard for Privileged Sessions (SPS) 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 and cleanup Forwarding data to third-party systems Joining to One Identity Starling
User management and access control Managing One Identity Safeguard for Privileged Sessions (SPS)
Controlling One Identity Safeguard for Privileged Sessions (SPS): reboot, shutdown Managing 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 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) RPC API 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) 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

Managing local user groups

You can use local groups to control the privileges of One Identity Safeguard for Privileged Sessions (SPS) local users — who can view and configure what.

For the description of built-in groups, see Built-in usergroups of One Identity Safeguard for Privileged Sessions (SPS).

Use the Users & Access Control > Local User Groups page to:

  • Create a new user group.

  • Display which users belong to a particular local user group.

  • Edit group memberships.

To create a new group,

  1. Navigate to Users & Access Control > Local User Groups and click .

    Figure 69: Users & Access Control > Local User Groups — Group management

  2. Enter a name for the group.

  3. Enter the names of the users belonging to the group. Click to add more users.

  4. Click Commit.

    Once you have added your user groups, the next step is to start assigning privileges to them. For details on how to do that, see Assigning privileges to user groups for the One Identity Safeguard for Privileged Sessions (SPS) web interface.

Managing One Identity Safeguard for Privileged Sessions (SPS) users from an LDAP database

The One Identity Safeguard for Privileged Sessions (SPS) web interface can authenticate users to an external LDAP database to simplify the integration of SPS to your existing infrastructure. You can also specify multiple LDAP servers: if the first server is unavailable, SPS will try to connect to the second server.

NOTE:
  • The admin user is available by default and has all privileges. It is not possible to delete this user.

  • Enabling LDAP authentication automatically disables the access of every local user except for admin. The admin user can login to SPS even if LDAP authentication is used.

  • SPS accepts both pre-win2000-style and Win2003-style account names (User Principal Names). User Principal Names (UPNs) consist of a username, the at (@) character, and a domain name, for example administrator@example.com.

  • For the username of SSH users, only valid UTF-8 strings are allowed.

  • The following characters cannot be used in:

    • usernames: /\[]:;|=+*?<>"
    • group names: /\[]:;|=+*?<>"@,

  • When using RADIUS authentication together with LDAP users, the users are authenticated to the RADIUS server, only their group memberships must be managed in LDAP. For details, see "Authenticating users to a RADIUS server" in the Administration Guide.

  • SPS treats user and group names in a case insensitive manner if the matching rule for the attribute in question is case insensitive in the LDAP database.
Prerequisites

Make sure that the response timeout of the LDAP/Active Directory server is at least 120 seconds.

To enable LDAP authentication

  1. Navigate to Users & Access Control > Settings > Authentication settings.

  2. Select the LDAP option and enter the parameters of your LDAP server.

    Figure 70: Users & Access Control > Settings > Authentication settings — Configuring LDAP authentication

  3. Enter the IP address or hostname and port of the LDAP server into the Server Address field. If you want to encrypt the communication between SPS and the LDAP server, in case of TLS, enter 636 as the port number, or in case of STARTTLS, enter 389 as the port number.

    Use an IPv4 address.

    To add multiple servers, click and enter the address of the next server. If a server is unreachable, SPS will try to connect to the next server in the list in failover fashion.

    Caution:

    If you will use a TLS-encrypted with certificate verification to connect to the LDAP server, use the full domain name (for example ldap.example.com) in the Server Address field, otherwise the certificate verification might fail. The name of the LDAP server must appear in the Common Name of the certificate.

  4. Select the type of your LDAP server in the Type field. Select:

    • Active Directory to connect to Microsoft Active Directory servers.

      You can enable nested groups. Select Enable AD group membership check, then Enable nested groups.

      Caution:

      Nested groups can slow down the query and cause the connection to timeout if the LDAP tree is very large. In this case, disable the Enable nested groups option.

      To also check group membership based on group DNs in a user attribute, select Enable checking for group DNs in user objects and enter the name of the user attribute, for example, memberOf in the User attribute of group DNs field.

      Caution:

      Using this option significantly slows down log on to the SPS web interface if you have too many groups.

      Only use this option if you have an LDAP schema where the user groups can only be determined from a user attribute that contains the group DNs.

      To check for group membership based on user DNs in group attributes, use the Check the user DN in these groups options.

      For more information, see Active Directory LDAP backend.

    • POSIX to connect to servers that use the POSIX LDAP scheme.

      If your LDAP server uses a custom POSIX LDAP scheme, you might need to set which LDAP attributes store the username, or the attributes that set group memberships. For example, if your LDAP scheme does not use the uid attribute to store the usernames, set the Username (user ID) attribute name option.

      In addition to the primary group membership checking, you can allow checking for supplementary group memberships by selecting the Enable POSIX group membership check and specifying the POSIX group membership attribute name field.

      To also check group membership based on group DNs in a user attribute, select Enable checking for group DNs in user objects and enter the name of the user attribute, for example, memberOf in the User attribute of group DNs field and objectClass, for example, groupOfNames in the Group objectClass field.

      Caution:

      Using this option significantly slows down log on to the SPS web interface if you have too many groups.

      Only use this option if you have an LDAP schema where the user groups can only be determined from a user attribute that contains the group DNs.

      To check for group membership based on user DNs in group attributes, use the Check the user DN in these groups options.

      For more information, see POSIX LDAP backend.

      For an overview about LDAP user and group resolution in SPS, see Overview.

  5. In the User Base DN field, enter the name of the DN to be used as the base of queries regarding users (for example: OU=People,DC=demodomain,DC=exampleinc).

    NOTE:

    You must fill in this field. It is OK to use the same value for User Base DN and Group Base DN.

    However, note that specifying a sufficiently narrow base for the LDAP subtrees where users and groups are stored can speed up LDAP operations.

  6. In the Group Base DN field, enter the name of the DN to be used as the base of queries regarding groups (for example: OU=Groups,DC=demodomain,DC=exampleinc).

    NOTE:

    You must fill in this field. It is OK to use the same value for User Base DN and Group Base DN.

    However, note that specifying a sufficiently narrow base for the LDAP subtrees where users and groups are stored can speed up LDAP operations.

  7. In the Bind DN field, enter the Distinguished Name that SPS should use to bind to the LDAP directory (for example: CN=Administrator,DC=demodomain,DC=exampleinc).

    NOTE:

    SPS accepts both pre-win2000-style and Win2003-style account names (User Principal Names), for example administrator@example.com is also accepted.

  8. To configure or change the password to use when binding to the LDAP server, click Change and enter the password. Click Update. Click Commit.

    NOTE:

    One Identity Safeguard for Privileged Sessions (SPS) accepts passwords that are not longer than 150 characters. Unicode characters as well as the following special characters can be used: !"#$%&'()*+,-./:;<=>?@[\]^-`{|}

  9. If you want to encrypt the communication between SPS and the LDAP server, in Encryption, select the TLS or the STARTTLS option and complete the following steps:

    Figure 71: Policies > LDAP Servers — Configuring encryption

    NOTE:

    TLS-encrypted connection to Microsoft Active Directory is supported only on Windows 2003 Server and newer platforms. Windows 2000 Server is not supported.

    • If you want SPS to verify the certificate of the server, select Only accept certificates issued by the specified CA certificate and click the icon in the CA X.509 certificate field. A pop-up window is displayed.

      Click Browse, select the certificate of the Certificate Authority (CA) that issued the certificate of the LDAP server, then click Upload. Alternatively, you can paste the certificate into the Copy-paste field and click Set.

      SPS will use this CA certificate to verify the certificate of the server, and reject the connections if the verification fails.

      Caution:

      According to recent cryptographic research, SHA-1 algorithm cannot be trusted as secure anymore, because signatures can be forged with reasonable costs. As a result, SHA-1 algorithm is not supported in SPS for X.509 certificate chains. Starting from SPS versions 6.0.4 and 6.5.0, certificates with SHA1-based signatures are no longer trusted for Active Directory or LDAP authentication, and future versions might refuse to validate SHA-1 signatures altogether.

      Note that Root CA certificates may still contain SHA-1 signatures, because the signature is not validated for self-signed certificates. It is expected that other software such as clients and servers connected to SPS might reject SHA-1 signatures in a similar fashion.

      Signing CAs in SPS generate certificates with SHA-256 since versions 4.3.4 and 5.0.0.

      SPS checks if the Certificate Revocation List (CRL) has expired and that the CRL has been signed by the same Certificate Authority (CA).

      Caution:

      If you will use a TLS-encrypted with certificate verification to connect to the LDAP server, use the full domain name (for example ldap.example.com) in the Server Address field, otherwise the certificate verification might fail. The name of the LDAP server must appear in the Common Name of the certificate.

    • If the LDAP server requires mutual authentication, that is, it expects a certificate from SPS, enable Authenticate as client. Generate and sign a certificate for SPS, then click in the Client X.509 certificate field to upload the certificate. After that, click in the Client key field and upload the private key corresponding to the certificate.

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

  10. Click Commit.

    NOTE:

    You also have to configure the usergroups in SPS and possibly in your LDAP database. For details on using usergroups, see Using usergroups.

  11. Click Test to test the connection.

Overview

Access control in SPS is based on groups. Whenever a user needs to access a protected resource, like navigating to a configuration page on the SPS web interface, or opening a channel in a connection, SPS checks the access control list associated with the resource in question.

The access control lists grant access to groups. Therefore, SPS needs to determine which groups the user is a member of to evaluate the access rules.

When you configure SPS to use an LDAP backend, SPS will:

  1. Identify the user. For more information, see User identification below.

  2. Determine the relevant groups the user is a member of. For more information, see Group membership resolution below.

User identification

SPS works with plain usernames, for example, administrator. This must be unambiguously resolved to an LDAP user object in order to determine the user’s groups. If a user identification returns multiple results, SPS treats this as an error, and access to the user in question is denied.

Only the user object returned in this phase is used for group membership checks, and not the original plain username.

User resolution depends on the type of the backend (POSIX or Active Directory).

For more information, see the backend-specific sections below.

Group membership resolution

SPS works with plain group names, for example, superusers. For group membership checks, SPS looks up a relevant group object in LDAP and checks if the user object returned during user identification is a member of that group. Since some of the group object’s attributes are always used for group membership checks, the group object must also exist in LDAP.

Group membership resolution depends on the LDAP backend type.

For more information, see the backend-specific sections below.

Common to all backends

All backends have configurable parameters relevant for user identification and group membership:

  • bind_dn and bind_password: Bind DN and Bind password are used for user identification and group membership check during authentication to the LDAP database. If you leave it empty, SPS will try to bind anonymously.

  • user_base_dn: User Base DN is where SPS searches for users.

  • group_base_dn: Group Base DN is where SPS searches for groups. Only groups under this base are considered for membership.

  • memberof_check: the Enable checking for group DNs in user objects setting allows checking a configurable attribute in the user object. This attribute contains a list of group DNs the user is additionally a member of. This user attribute is usually memberOf. For more information, see the backend-specific sections below.

  • user_dn_in_groups: Check the user DN in these groups is a list of additional group object classes and their respective attributes where SPS will look for member user DNs. For more information, see the backend-specific sections below.

All comparisons and searches are done by SPS in a way that plain user and group names are matched with attribute values by the LDAP server. As a result, user and group names are case insensitive if and only if the matching rule for the attribute in question is case insensitive in the LDAP database.

相关文档