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One Identity Safeguard for Privileged Sessions 6.0.14 LTS - Administration Guide

Preface Introduction The concepts of 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 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 RDP-specific settings SSH-specific settings Telnet-specific settings VMware Horizon View connections VNC-specific settings Indexing audit trails Using the Search interface Searching session data on a central node in a cluster 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 Appendix: Deprecated features Glossary

POSIX LDAP backend

In addition to the common parameters, the POSIX backend has the following configurable parameters:

  • username_attribute: Username (user ID) attribute name is the name of the attribute in the user object, which contains the user’s plain username.

  • membership_check: Enable POSIX group membership check enables POSIX primary and supplementary group membership checking. When enabled, it has the following configurable parameter:

    • member_uid_attribute: the optional POSIX group membership attribute name is the name of the attribute in a posixGroup group object, which lists the plain usernames that are members of the group. These groups are usually referred to as supplementary groups of the referred user.

User identification in POSIX

To determine the user entry for a given plain username, One Identity Safeguard for Privileged Sessions (SPS) performs a search under user_base_dn for objects having the username_attribute equal to the plain username of the user. The objectClass of the user object is not restricted.

The user object returned here is used for group membership checks.

Group membership resolution in POSIX

For all group membership checks, only the LDAP user object returned during user identification phase is used.

The plain group name is always compared to the cn attribute of the group object.

A user is treated as a member of a group given by its plain group name if the plain group name matches the cn attribute of the group object, and any of the following is true:

  • The group is the user’s primary group. That is, the group is a posixGroup, and the user’s gidNumber attribute is equal to the group’s gidNumber attribute.

    This check is performed only when the membership_check option is enabled for POSIX.

    Note

    It is OK for the user to have no gidNumber attribute, in which case this check will be skipped.

  • The group lists the user’s short username. That is, the group is a posixGroup, and it’s member_uid_attribute contains the short username from the user object.

    This check is performed only when the membership_check option is enabled, and the member_uid_attribute is configured.

    Note

    For the purpose of this check, the user’s short username is retrieved from the user object’s username_attribute. Currently, this attribute should only contain a single username. A warning will appear in the logs if this is not the case, and the first value of the attribute will be used as returned by the server. This is a known limitation.

  • The group lists the user’s dn in any of the additional group objects configured in user_dn_in_groups.

    For example, if a row is added with objectClass set to groupOfNames and attribute set to member, SPS will treat the user as a member of all groups where the group is a groupOfNames, and the group’s member attribute contains the user’s dn.

  • The user lists the group’s dn. That is, the user’s memberof_user_attribute contains the dn of the group, and the objectClass of the referred group is memberof_group_objectclass.

    This check is performed only when the memberof_check option is enabled for POSIX.

    Note

    SPS compares the dn stored in the memberof_user_attribute to the dn of the group object itself in a strict stringwise manner. Therefore, the user attribute must contain the group DN exactly as it would be returned by the LDAP server. No case or accent differences are allowed.

Active Directory LDAP backend

In addition to the common parameters, the Active Directory (AD) backend has the following additional configurable parameters:

  • membership_check: Enable AD group membership check enables AD specific non-primary group membership checking.

    Note

    The AD user’s primary group is always checked regardless of this setting.

    • nested_groups: Enable nested groups allows AD nested group support. See below for details.

Additionally, AD supports case and accent insensitive matching in many of the user and group name attributes. Since One Identity Safeguard for Privileged Sessions (SPS) relies on the server to perform comparisons, case and accent insensitive user and group name support depends solely on the server configuration.

User identification in AD

To determine the user entry for a given plain username, SPS performs a search under user_base_dn for objects having either the sAMAccountName or the userPrincipalName equal to the plain username of the user. The objectClass of the user object is not restricted.

Note

Although userPrincipalName in AD is a Internet-style name like user@example.com, it matches simple names like user.

Only the user object returned here is used for group membership checks.

Group membership resolution in AD

For all group membership checks, only the LDAP user object returned during user identification phase is used.

The plain group name is always compared to the cn attribute of the group object.

A user is treated as a member of a group if both the group object’s objectClass and objectCategory is group, and any of the following is true:

  • The group is the user’s primary group. That is, the objectSID attribute of the group matches the Security Identifier calculated from the user object’s objectSID and primaryGroupID attributes, as described in the Microsoft Support article How to use the PrimaryGroupID attribute to find the primary group for a user.

    Note

    When using the AD backend, this check is always performed, even if the membership_check option is disabled. However, it is OK for the user to have no primary group.

  • The group lists the user’s short username. That is, the group’s memberUid attribute contains the short username from the user object.

    This check is performed only when the membership_check option is enabled for AD.

    Note

    For the purpose of this check, the user’s short username is retrieved from the user object’s sAMAccountName attribute only, which is a single-valued attribute in AD. This is a known limitation.

    It is OK for the sAMAccountName attribute to be missing, in which case this check will be skipped.

  • The group lists the user’s dn. That is, the group object’s member attribute contains the user’s dn.

    This check is performed only when the membership_check option is enabled for AD.

    This is the only place where nested groups are supported. When the nested_groups setting is enabled in the configuration, SPS will also find groups which do not directly contain the user’s dn in their member attribute, but do contain an intermediate group’s dn, which in turn contains the user dn in its member attribute. This nesting can be arbitrarily deep, limited only by AD.

    Note

    Due to the nature of the way AD resolves the nested group chain, intermediate groups might be outside the configured group_base_dn.

Note

Although an objectCategory in AD is a DN-valued attribute, it does match simple names like group.

Additionally, a user is treated as a member of a group if:

  • The group lists the user’s dn in any of the additional group objects configured in user_dn_in_groups.

    For example, if a row is added with objectClass set to groupOfNames and attribute set to member, SPS will treat the user as a member of all groups where the group is a groupOfNames, and the group’s member attribute contains the user’s dn.

    Note

    There is no additional restriction on the group’s objectClass in this case.

  • The user lists the group’s dn. That is, the user’s memberof_user_attribute contains the dn of the group, and the objectClass of the referred group is group.

    This check is performed only when the memberof_check option is enabled for AD.

    Note

    SPS compares the dn stored in the memberof_user_attribute to the dn of the group object itself in a strict stringwise manner. Therefore, this user attribute must contain the group DN exactly as it would be returned by the LDAP server. No case or accent differences are allowed.

Appendix: Deprecated features

These features have been deprecated and will be removed from the upcoming releases.

Deprecated: Using the Search (classic) interface

IMPORTANT: Support for the Search (classic) interface is deprecated. This feature will be removed from the upcoming releases. One Identity recommends using the supported Search interface instead. For more information, see Using the Search interface.

This section describes how to browse the audit trails stored on One Identity Safeguard for Privileged Sessions (SPS), or archived to a remote server, how to search for a specific audit trail, and also how to replay them from the browser.

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