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HP OpenVMS Systems |
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HP Advanced Server for OpenVMS
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Use the /WORKSTATIONS qualifier to restrict the workstations from which users can log on to domain accounts. The default is to allow a user to log on from any workstation, but you can optionally restrict a user's logons to certain workstations. You can specify up to eight workstations for the user account.
To manage logon workstations, use the ADD USER, COPY USER, or MODIFY USER command, with the /WORKSTATION qualifier. For example:
LANDOFOZ\\TINMAN> ADD USER LION /WORKSTATION=(LIONS_DEN) %PWRK-S-USERADD, user "LION" added to domain "LANDOFOZ" |
This command creates the new user account LION and specifies that the
user can log on from the LIONS_DEN workstation.
3.1.10 Specifying Home Directories
A user's home directory is accessible to the user and contains files and programs for that user. When a user logs on at a workstation, a connection can be made to that user's home directory automatically. Depending on the client computer, you may need to specify the home directory in a logon script. The home directory becomes the user's default directory for file access and for all applications that do not have a defined working directory. Home directories can make it easier for an administrator to back up user files because they keep many or all of a user's files in one location.
On a server running Advanced Server software, the default parent directory for user account home directories is:
PWRK$LMROOT:[LANMAN.ACCOUNTS.USERDIRS]
You can specify a home directory as an absolute path name or as a UNC (Universal Naming Convention) path name, which is domain wide. To specify the default parent directory for user account home directories, enter:
\\server\LANMAN\ACCOUNTS\USERDIRS |
If you omit the /HOME qualifier when you create a user account, no home directory is defined for a user.
The Advanced Server home directory is not associated with the OpenVMS SYS$LOGIN directory. |
A home directory can be assigned to a single user or it can be shared by several users. It can be a local directory on a user's workstation or a shared network directory. If you specify a network path for the home directory, an attempt is made to create that home directory. If the directory cannot be created, a message instructs you to create the directory manually.
To specify a home directory, use the ADD USER, COPY USER, or MODIFY USER command, with the /HOME=(PATH=pathname) qualifier. The home directory pathname must be specified in one of the following forms:
\\servername\sharename\directoryname |
For example, to modify user account LION, specifying a home directory on server TINMAN to be associated with drive D, enter the following command:
LANDOFOZ\\TINMAN> MODIFY USER LION/HOME=(PATH=\\TINMAN\USERS\LION,DRIVE=D:) %PWRK-S-USERMOD, user "LION" modified on domain "LANDOFOZ" LANDOFOZ\\TINMAN> |
You can assign an expiration date for a user account, at which time the account is automatically expired but not removed from the accounts database. You can reactivate an expired account by removing the expiration date or by assigning a new date.
By default, there is no expiration date for a user account. Use the ADD USER, COPY USER, or MODIFY USER command with the /EXPIRATION qualifier to define the account expiration date for a user account.
When an account has an expiration date, the account is disabled at the end of the previous day. When an account expires, a user who is logged on remains logged on, but cannot establish new network connections or log on again after logging off.
For example, to add a user named FRIENDLY to the domain LANDOFOZ and set the account to expire on June 9, 2007, enter the following command:
LANDOFOZ\\TINMAN> ADD USER FRIENDLY/PASSWORD="PotOfGold"- _LANDOFOZ\\TINMAN>/EXPIRATION_DATE=09-JUN-2007 %PWRK-S-USERADD, user "FRIENDLY" added to domain "LANDOFOZ" |
User profiles allow you to set up the user's environment so that it can be downloaded to the user's workstation when the user logs on to the network. The user profile contains configuration information such as:
When the user logs on, the user profile is downloaded and the user's workstation is configured accordingly.
You create user profiles using the Windows NT Server tool User Profile Editor. Refer to your Windows NT Server documentation for more information.
When you add a user, you can specify a profile and its path.
To specify a profile, use the ADD USER or MODIFY USER command with the /PROFILE qualifier. For example, to add user SCARECROW with a profile that is stored on the server TINMAN, enter the following command:
LANDOFOZ\\TINMAN> ADD USER SCARECROW/PROFILE="\\TINMAN\PROFILES\SCARECROW.USR" %PWRK-S-USERADD, user "SCARECROW" added to domain "LANDOFOZ" LANDOFOZ\\TINMAN> |
Note that the network path to the profile is enclosed in quotation
marks.
3.1.13 Displaying User Accounts
To display information about user accounts, use the SHOW USERS command. For example:
LANDOFOZ\\TINMAN> SHOW USERS
User accounts in domain "LANDOFOZ":
User Name Full Name Type Description
-------------- ----------- ------ ------------------------
Administrator Global Built-in account for
administering the domain
Guest Global Built-in account for
guest access to the domain
LION Lion,Cowardly Global Cowardly Lion
SCARECROW Man, Straw Global The Straw Man
Total of 4 user accounts
LANDOFOZ\\TINMAN>
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To sort the display by user full name, use the SHOW USERS/SORT=FULLNAME command, as in the following example:
LANDOFOZ\\TINMAN> SHOW USERS/SORT=FULLNAME
User accounts in domain "LANDOFOZ:"
Full Name User Name Type Description
-------------- ------------- ------ ---------------------------
Administrator Global Built-in account for
administering the domain
Guest Global Built-in account for guest
access to the domain
Lion, Cowardly LION Global Cowardly Lion
Man, Straw SCARECROW Global The Straw Man
Total of 4 user accounts
LANDOFOZ\\TINMAN>
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To display user account settings for a specific user, use the SHOW USERS/FULL command. For example, the following display shows the settings for user LION.
LANDOFOZ\\TINMAN> SHOW USERS LION/FULL User accounts in domain "LANDOFOZ": User Name Full Name Type Description --------------- --------------- ------- ------------- LION Lion, Cowardly Global Cowardly Lion User profile: Logon script: Home Path: D: Path: \\TINMAN\USERS\LION Primary Group: Domain Users Member of groups: Domain Users, MUNCHKINS Workstations: No workstation restrictions Logon Flags: Logon script is executed, Password is expired Account Type: Global Account Expires: Never Logon hours (All hours) Last Log On: 08/23/00 05:07 PM Password Last Set: 06/30/00 11:03 AM Password Changeable: 06/30/00 11:03 AM Password Expires: 09/11/00 11:03 AM Total of 1 user account LANDOFOZ\\TINMAN> |
Use the MODIFY USER command to change the attributes of an existing user account. You can:
To add an existing user to a group, use the MODIFY USER/ADD_TO_GROUPS command, as in the following example:
LANDOFOZ\\TINMAN> MODIFY USER SCARECROW/ADD_TO_GROUPS=MUNCHKINS %PWRK-S-USERMOD, user "SCARECROW" modified on domain "LANDOFOZ" |
You can then enter the SHOW GROUPS/FULL command to see that the group MUNCHKINS now includes the user SCARECROW:
LANDOFOZ\\TINMAN> SHOW GROUPS MUNCHKINS/FULL
Groups in domain "LANDOFOZ":
Group Name Type Description
-------------------- ------ ------------------------------------
MUNCHKINS Global Users in the Land of Oz
Members: [US]LION, [US]SCARECROW)
Total of 1 group)
LANDOFOZ\\TINMAN>
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To change the hours when a user can log on, use the MODIFY USER/HOURS command. For example, to restrict a user to logging on only on Monday from 8 a.m. to 9 a.m. and from 3 p.m. to 8 p.m., specify /HOURS=(MON=(8-9,15-20)).
For example, to modify LION's logon hours, use the MODIFY USER command, as follows.
LANDOFOZ\\TINMAN> MODIFY USER LION/HOURS=(MON=(8-9,15-20)) %PWRK-S-USERMOD, user "LION" modified on domain "LANDOFOZ" LANDOFOZ\\TINMAN> |
You can verify that the change was made correctly using the SHOW USERS/FULL command. For example:
LANDOFOZ\\TINMAN> SHOW USERS LION/FULL
User accounts in domain "LANDOFOZ":
User Name Full Name Type Description
--------------- --------------- ------- -------------
LION Lion, Cowardly Global Cowardly Lion
User profile:
Logon script:
Home Path: D: Path: \\TINMAN\USERS\LION
Primary Group: Domain Users
Member of groups: Domain Users, MUNCHKINS
Workstations: No workstation restrictions
Logon Flags: Logon script is executed, Password is expired
Account Type: Global
Account Expires: Never
Logon hours: 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 2 2 2 2
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
Sunday: - - - - - - - - - - - - - - - - - - - - - - - -
Monday: - - - - - - - - X X - - - - - X X X X X X - - -
Tuesday: - - - - - - - - - - - - - - - - - - - - - - - -
Wednesday: - - - - - - - - - - - - - - - - - - - - - - - -
Thursday: - - - - - - - - - - - - - - - - - - - - - - - -
Friday: - - - - - - - - - - - - - - - - - - - - - - - -
Saturday: - - - - - - - - - - - - - - - - - - - - - - - -
Last Log On: 08/23/00 05:07 PM
Password Last Set: 06/30/00 11:03 AM
Password Changeable: 06/30/00 11:03 AM
Password Expires: 09/11/00 11:03 AM
Total of 1 user account
LANDOFOZ\\TINMAN>
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A user's ability to log on can be rescinded by either disabling or removing the user account. A disabled user account still exists, but the user is not permitted to log on. It continues to appear in the user accounts list. It can be restored to enabled status at any time. A removed account is permanently removed and cannot be recreated with the same security settings.
Each user in a domain is identified by a unique security identifier
(SID). The SID is created when a user account is created and is used
when assigning permissions to a resource. Because a SID is unique to an
account, a new account, even with the same user name, is assigned a new
SID. Therefore, if you delete a user account and then need to create
another user account for the same user with the same user name, the new
user account will not have the rights or permissions that previously
were granted to the old user account, because the user account will
have a different SID. To avoid problems, first disable a user account
you want to remove and then remove it after a reasonable time.
3.1.15.1 Disabling a User Account
Set the account to Disabled, using the MODIFY USER/FLAGS=(DISUSER)
command.
3.1.15.2 Deleting a User Account
To delete a user account, use the REMOVE USER command. You are prompted for confirmation before the command executes.
A deleted user account is removed from the user accounts list and cannot be restored or recreated. Make sure that you want to delete a user account before doing so. For example:
LANDOFOZ\\TINMAN> REMOVE USER LION Each user account is represented by a unique identifier which is independent of the user name. Once the user account is deleted, even creating an identically named user account in the future will not restore access to resources which currently name this user account in the access control list. Remove user "LION" [YES or NO] (YES) : YES %PWRK-S-USERREM, user "LION" removed from domain "LANDOFOZ" LANDOFOZ\\TINMAN> |
Advanced Server provides user account host mapping, which associates a network user account with an OpenVMS user account, simplifying the management of both user accounts. Host mapping is required for users who are externally authenticated, as described in Section 3.1.17, External Authentication.
Every file on an OpenVMS system must have an owner. Host mapping
establishes which OpenVMS account is assigned as the owner when an
Advanced Server user creates files or directories. Host mapping is also
used to determine the OpenVMS user name when logging on to OpenVMS
using external authentication. Additionally, when the Advanced Server
and OpenVMS security model is enabled, host mappings are used to
determine the OpenVMS access rights permitted to the user. The security
models are selected using the Configuration Manager, as described in
Section 7.2, Managing File Server Parameters Affecting System Resources.
3.1.16.1 Implicit and Explicit Host Mapping
The Advanced Server supports both explicit and implicit host mapping between OpenVMS and Advanced Server user accounts. You can explicitly map a network user name to an OpenVMS user name using the ADMINISTER command ADD HOSTMAP.
Implicit host mapping is established when:
Host mapping is used to determine the OpenVMS user name when logging on to OpenVMS using external authentication. The user account Administrator is implicitly mapped to the OpenVMS user account SYSTEM. Therefore, if you enable the OpenVMS user account SYSTEM for external authentication, you can log in to the SYSTEM account using the Administrator user name and password, without explicitly defining any host map information. See Section 3.1.17, External Authentication, for more information.
Implicit host mapping is based on the user account names. Therefore, if
you copy the Administrator account or the Guest account, you must
specifically set up host mapping for the new user accounts. If you
rename the Administrator or Guest account, the implicit mapping is not
preserved. You must explicitly map the newly renamed account name to
the OpenVMS SYSTEM account using the ADMINISTER command ADD HOSTMAP.
3.1.16.2 Establishing User Account Host Mapping
By default, if a user name for a network user account is identical to the user name for an OpenVMS user account, the user accounts are host mapped. Files created by the network user are automatically designated with the OpenVMS owner setting. This feature is controlled by a set of server configuration parameters, described in Section 7.3, Managing Server Configuration Parameters Stored in the OpenVMS Registry, and listed in Appendix A, Server Configuration Parameters, including:
When a user creates a file or directory using the Advanced Server, the
resource is assigned the OpenVMS ownership associated with the user's
mapped account. The mapped account is used for OpenVMS resource
ownership. (For more information about enabling this security model,
see Section 7.2, Managing File Server Parameters Affecting System Resources.)
3.1.16.2.1 Setting Up Explicit Host Mapping
To set up explicit host mapping, use the ADD HOSTMAP command in the following form:
ADD HOSTMAP network-user-name OpenVMS-user-name
In the following example, the network user account for SCARECROW is host mapped to the user's OpenVMS user account STRAWMAN. If SCARECROW creates a file, the file is assigned the RMS ownership attributes associated with the OpenVMS account STRAWMAN.
LANDOFOZ\\TINMAN> ADD HOSTMAP SCARECROW STRAWMAN %PWRK-S-HOSTMAPADD, user "SCARECROW" mapped to host user "STRAWMAN" LANDOFOZ\\TINMAN> |
To display host mapping, use the SHOW HOSTMAP command. For example:
LANDOFOZ\\TINMAN> SHOW HOSTMAP Host Mappings for server "TINMAN": User Name Host Name ---------------------------- ----------- Guest PWRK$GUEST SCARECROW STRAWMAN LION CLION Total of 3 host mappings LANDOFOZ\\TINMAN> |
External authentication allows the OpenVMS system manager to set up an
OpenVMS user-account for which login authentication can be verified by
the Advanced Server. External authentication uses the Advanced Server
to perform user authentication for network accounts as well as OpenVMS
accounts. The main advantage is that users only have to maintain one
username/password-combination for access to multiple environments. The
Microsoft Lanman domain mechanism that Advanced Server is compatible
with, takes care of pass-through authentication if a trusted domain
network account is used to log on to OpenVMS.
3.1.17.1 Enabling External Authentication Per User
The user flag EXTAUTH in the SYSUAF allows you as a system-manager to enable external authentication per user. This setting forces each user to be authenticated externally. In case you have to enable external authentication for all users, remember you can use an asterix (*) with SYSUAF and further disable external authentication for any user that does not need it, like SYSTEM and FIELD. By default, the Advanced Server assumes that you use the same account name in OpenVMS as is residing in the configured Windows-domain. If the account names defer, or the network-account resides in another domain you must create a link by adding a hostmap between the OpenVMS account name and the Windows account.
External authentication cannot occur if the network connection to the user's domain-authentication server is down. If a user needs to bypass external authentication, at the OpenVMS login prompt you can specify the /LOCAL_PASSWORD qualifier after the OpenVMS user name. To do this, the user must have either:
External authentication is an option for users who have both OpenVMS and Advanced Server domain user accounts. User host mapping provides the link between these two accounts, as described in Section 3.1.16, User Account Host Mapping
With external authentication, users get automatic password synchronization between their OpenVMS account and their corresponding network domain accounts. If the domain account password is changed, the OpenVMS LOGINOUT program sets the OpenVMS account password to the domain account password the next time the user logs in to the OpenVMS account.
If the user changes the OpenVMS password with the DCL SET PASSWORD command, the SET PASSWORD command sends the password change to the Advanced Server external authenticator. For synchronization to succeed a domain controller that is capable of updating the users's domain account must be available to Advanced Server. It may be the Advanced Server itself acting as a PDC for the corresponding domain. Further the domain account password must meet OpenVMS syntax requirements simultaneously. Externally authenticated users are considered to have a single password and are not subject to OpenVMS password policies such as password expiration, password history, and minimum and maximum password length restrictions. Users are however, subject to the Advanced Server domain user account policy that is defined. All other OpenVMS account restrictions remain in effect, such as disabled accounts, time restrictions, and quotas. For information about enabling external authentication, as well as information about setting up external authentication in OpenVMS Clusters, refer to the HP Advanced Server for OpenVMS Server Installation and Configuration Guide. For information about setting up the system and enabling OpenVMS user accounts for external authentication, refer to HP OpenVMS Guide to System Security.
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