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21.5. Migrating from NIS to IdM

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Server Suite This section describes the activities that are specific to preparing your environment to handle agentless authentication and authorization. If you only plan to use Delinea Network Information Service adnisd to publish network information, such as automount mount points, netgroup membership rules, or custom maps, you can skip this chapter. Normally, the adclient agent is installed locally on a computer to handle all account authentication and lookup requests that need to be passed to Active Directory. On computers and devices where you cannot install a Delinea Agent locally, you may be able to use the Delinea Network Information Service adnisd to provide agentless authentication. With agentless authentication, computers that have older or unsupported operating systems that can be, or already are, configured as NIS clients can submit NIS requests to the Delinea Network Information Service. The Delinea Network Information Service can then check its cached Active Directory information to verify whether a user or group has valid credentials and is authorized to log on. The Delinea Network Information Service can then use the information in these maps to respond to NIS client requests for authentication or other services. Network information and custom maps can also be published for a zone, but those maps must be manually imported or created. The maps for agentless authentication only require you to add and enable a profile for each Active Directory user and group who should have access to the zone. In this way, the Delinea Network Information Service can be used to service agentless authentication requests from computers or devices where adclient itself cannot be installed. In planning a deployment that supports agentless authentication for NIS clients, you should keep in mind that the zone associated with the computer where adnisd is installed defines the scope of information available to the NIS clients that the adnisd process serves. Each instance of adnisd supports one and only one zone, which is equivalent to a single NIS domain. The adnisd process can only look up information for the computers, groups, and users that exist in the same zone as the local computer account, and all instances of the adnisd in the same zone respond to queries using the same information from Active Directory. For users and groups to be available for agentless authentication, therefore, they must be enabled for the zone the Delinea Network Information Service serves. In addition, each zone that supports agentless authentication requires an Active Directory attribute for storing the password hash for UNIX-enabled users. The password hash is not created in Active Directory by default, so it must be generated then maintained using a password synchronization service installed on all of your domain controllers. The Active Directory attribute that holds the password hash must be accessible to the computers you are using as NIS servers in each zone. If you decide you want to use the Delinea Network Information Service to support agentless authentication, you should:. Identify the zones for which you want to publish information. For example, if you want user and group information broadly available to NIS clients across the network and you have a parent zone, you may want to allow agentless authentication for all of the users in that zone. If you want to strictly control which users can be authenticated to NIS clients, you may want to create a separate agentless-authentication child zone that only contains those users and their groups. For each zone that supports agentless authentication, you must specify the Active Directory attribute for storing the password hash. Identify the computers that should service NIS client requests in each zone. You can designate any computer that has the Delinea Agent installed to also act as the Delinea Network Information Server in the zone. Install a password synchronization service on all of the domain controllers in the joined domain. Install and configure the Delinea Network Information Service adnisd on the selected computers in each zone. On the computers that will act as NIS servers in a zone, you must manually install and start the adnisd service. Alternatively, you can modify the startup script on each local computer so that the adnisd process starts whenever the local computer is rebooted. You also may want to customize the configuration parameters that control the operation of the adnisd process. Configure computers and devices as NIS clients that bind to the Delinea Network Information Service on the selected computers in each zone. Import and enable the users and groups who need to be authenticated to NIS clients for the zone. For example, you can import network maps such as netgroup and automount NIS maps or create custom maps using the Access Manager console. Each instance of the Delinea Network Information Service supports one and only one zone. All instances of the Delinea Network Information Service in the same zone respond to queries using the same information from Active Directory. If user information from a zone needs to be available to NIS clients for agentless authentication, the Delinea Network Information Service must be able to access the password hash for zone users. Select the zone that will service NIS client requests, right-click, then click Properties. For example, if you want to work with a child zone, sanfrancisco , expand the parent zone and Child Zones nodes, select the sanfrancisco zone right-click, then click Properties. Depending on the password synchronization service you are using and the Active Directory schema, select one of these attributes:. By default, the zone name is used as the NIS domain name because this makes it easy to identify the scope of the information available to NIS clients. You can type a different name in the zone properties if you choose. Whether you use the default name or another name for the NIS domain, you must use the same name when you configure the NIS clients. For example, expand the Computers node in the zone that will service NIS client requests, select the computer account, right-click to select Properties , then click the Delinea Profile tab to set this option. The computer account acting as a NIS server for the zone must be able to access the attribute containing the password hash for agentless authentication to be successful. This property setting enables the computer account to access the password hash so that it can authenticate users in response to NIS client requests. However, you must manually install and start the Delinea Network Information Service on the physical computer before the computer can act as a NIS server. The Delinea Network Information Service must be able to retrieve the current password hash for zone users in order for it to respond to agentless authentication requests from NIS clients. Active Directory, however, does not generate a password hash for users by default. This task is handled by the password synchronization service. Therefore, to generate the password hash for zone users, you first need to install a password synchronization service. You can install the password synchronization service with the Server Suite or separately using a standalone setup program. Once deployed, it ensures the passwords served by the Delinea Network Information Service are always up-to-date. With a password synchronization service, any time users change their Active Directory password, the corresponding password hash in their user profile is updated to reflect the change. Depending on your environment, you can choose to install one of the following:. Alternatively, you can install Delinea Password Synchronization independent of the the Server Suite using it own setup program. If you install the Delinea Password Synchronization program using the setup program, you can skip this section. To install the Delinea Password Synchronization program:. Review the terms of the license agreement. If you accept the license agreement, select I accept the terms of the license agreement , then click Next. Type your name and company, select who should be able to use this application on the computer, then click Next. Once installed, the Delinea Password Synchronization program will generate the initial password hash when users next change their password, then update the password hash at each password change thereafter. The password hashes are created using DES encryption with a two character salt. If the password hash is stored in the altSecurityIdentities attribute, it has a prefix of cdcPasswordHash , for example:. If the password hash is stored in one of the other supported attributes, it is stored without a prefix. When a user changes his Active Directory password, the Delinea Password Synchronization program discovers the zones to which that user has access and updates the appropriate attribute that holds the password hash for that user in each zone. If you choose to use one of the password synchronization services provided by Microsoft instead of the Delinea Password Synchronization program, follow the instructions provided with the software to install the service. In general, you need to do the following to use the Microsoft password synchronization services:. Set the NIS domain name to the zone name you specified when you joined the domain. For example, if you are using the default zone, set the NIS domain to default. Set the NIS Server name to the host name of the computer running both the adclient and adnisd services. Give user accounts access to the zone and NIS domain. Only Active Directory users with a UNIX profile created using the Access Manager console include the attribute parentLink needed to look up their zone information for password synchronization. You can use the Orphan Unix data objects option in the Analyze Wizard to check the forest for accounts missing this attribute setting and attempt to correct the problem. If the Analysis Results display a Warning for the Orphan Unix data objects check, you can right-click, then select Properties to view additional details. If the profile is missing the parentLink attribute, select the warning, right-click, then select Populate parentLink attribute to define this attribute for the user. Contact Us. Your Privacy Choices. Account Settings Logout. All Files. Submit Search. Heading link copied to clipboard. Preparing for Agentless Authentication for NIS Clients This section describes the activities that are specific to preparing your environment to handle agentless authentication and authorization. Deciding to Use Agentless Authentication Normally, the adclient agent is installed locally on a computer to handle all account authentication and lookup requests that need to be passed to Active Directory. The following figure provides a simplified view of this environment. Planning for Agentless Authentication In planning a deployment that supports agentless authentication for NIS clients, you should keep in mind that the zone associated with the computer where adnisd is installed defines the scope of information available to the NIS clients that the adnisd process serves. If you install the Delinea Network Information Service on multiple computers, whether in the same zone or across multiple zones, all of these instances are zone-specific peers. Importing existing NIS maps simply provides a mechanism for migrating information to the Active Directory. Once the information is stored in Active Directory, any original NIS maps you imported are no longer used. Instead, the Delinea Network Information Service uses the information stored in Active Directory to automatically generate the maps it needs to service authentication and lookup requests. This local cache of data is updated at a regular interval. Regardless of the password synchronization service you choose to use, the service must be installed on all domain controllers in the Active Directory domain where you are enabling agentless authentication. You can run the setup program interactively or silently if you use the Microsoft software installation. If you are installing silently using the msiexec program, you can skip the steps in this section. The initial password hash is only generated when the user changes his password. You may want to force users to change their password at the next logon to get the password set at the earliest opportunity. Client authentication requests may fail for users who do not have a password hash available. If the password hash field in the passwd. 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