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defined in this profile allow auditing and accounting, printer administration, batch processing, device installation and configuration, file system repairs, e-mail administration, name and directory service configuration, process administration, and new software installation and configuration. The Operator profile has very few privileges at all: only printer and backup administration is permitted. Note that the Operator is not allowed to restore data: this privilege is reserved for the SA or PA. As an alternative to the Operator, the Printer Manager profile allows only printer administration tasks to be performed. Typical authorizations that are permitted include solaris.admin.printer.delete, solaris.admin.printer.modify, and solaris.admin.printer.read, encompassing commands like lpsched, lpstat, and lpq. A slightly different approach is taken for the definition of the Basic Solaris User: this policy is contained within the policy.conf file. Typical authorizations permitted for the Basic Solaris User include the following:
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solaris.admin.dcmgr.read solaris.admin.logsvc.read solaris.admin.prodreg.read solaris.compsys.read solaris.admin.diskmgr.read solaris.admin.printer.read solaris.admin.serialmgr.read solaris.jobs.user solaris.admin.fsmgr.read solaris.admin.procmgr.user solaris.admin.usermgr.read solaris.profmgr.read
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The following reference provides details on the different databases that are used with RBAC.
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The user_attr file is the RBAC user database. This file primarily shows the relationship between the user and profiles that apply to the user. It contains a single entry by default, which defines the security information for every user that has access to RBAC. The following entry gives the root user permission to do everything on the system:
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root::::type=normal;auths=solaris.*,solaris.grant;profiles=All
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Clearly, if the power of root were to be reduced, solaris.* would need to be replaced with something more restricted in scope, such as solaris.admin.*. For an explanation of the fields not shown, please see the man page.
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The auth_attr file is the RBAC authorization database. This file primarily depicts the available authorizations. It contains lists of all authorizations defined on the system. Some sample entries are shown here:
solaris.admin.fsmgr.:::Mounts and Shares:: solaris.admin.fsmgr.read:::View Mounts and Shares::help=
11:
Role-Based Access Control
AuthFsmgrRead.html solaris.admin.fsmgr.write:::Mount and Share Files::help= AuthFsmgrWrite.html solaris.admin.logsvc.:::Log Viewer:: solaris.admin.logsvc.purge:::Remove Log Files::help= AuthLogsvcPurge.html solaris.admin.logsvc.read:::View Log Files::help=AuthLogsvcRead.html solaris.admin.logsvc.write:::Manage Log Settings::help= AuthLogsvcWrite.html solaris.admin.serialmgr.:::Serial Port Manager:: solaris.admin.usermgr.:::User Accounts:: solaris.admin.usermgr.pswd:::Change Password::help=AuthUserMgrPswd.html solaris.admin.usermgr.read:::View Users and Roles:: help=AuthUsermgrRead.html solaris.admin.usermgr.write:::Manage Users::help=AuthUsermgrWrite.html
prof_attr
The prof_attr file is the RBAC profile database. This file displays the relationship between the profiles and the corresponding authorizations. Sample prof_attr entries for the Basic Solaris User, User Management, and User Security are shown here:
Basic Solaris User:::Automatically assigned rights: auths=solaris.profmgr.read,solaris.jobs.users, solaris.admin.usermgr.read,solaris.admin.logsvc.read, solaris.admin.fsmgr.read,solaris.admin.serialmgr.read, solaris.admin.diskmgr.read,solaris.admin.procmgr.user, solaris.compsys.read,solaris.admin.printer.read, solaris.admin.prodreg.read,solaris.admin.dcmgr.read; profiles=All;help=RtDefault.html User Management:::Manage users, groups, home directory: auths=profmgr.read,solaris.admin.usermgr.write, solaris.admin.usermgr.read;help=RtUserMngmnt.html User Security:::Manage passwords, clearances: auths=solaris.role.*,solaris.profmgr.*,solaris.admin.usermgr.*; help=RtUserSecurity.html
exec_attr
The exec_attr file is the RBAC command database. It contains lists of commands associated with a specific profile. For example, a set of entries for the User Manager profile would look like this:
User Management:suser:cmd:::/etc/init.d/utmpd:uid=0;gid=sys User Management:suser:cmd:::/usr/sbin/grpck:euid=0 User Management:suser:cmd:::/usr/sbin/pwck:euid=0
Part III:
Security
Example
Although much of the material in this chapter is conceptual, the following example shows you how to use RBAC practically. For each role that you want to create, you should develop a planning table and then follow the steps required to configure and activate the role on the system. By preplanning roles, scripts can be created to automate the process across a number of different servers. An example of planning table entries is shown here:
Role User Administration Web Management Purpose/Description Add users to the system Allow the Web server to be operated Users Assigned Commands Used useradd, usermod, userdel, pwck, httpd, apachectl
paul, nalneesh paul, jane, jessica
Once you ve identified the roles, users, and commands, the following three steps need to be taken: 1. Create each role using the smrole command. 2. Create each profile using smprofile. 3. Assign each user to the role using smrole. 4. Verify the changes in the files.
Command Reference
The following reference provides details on the different commands that are used with RBAC.
smexec
The smexec command is used to create, update, and delete rows in the exec_attr database. One of three options must be passed to the command upon execution: add, which adds an entry; delete, which deletes an entry; or modify, which updates an entry. In order to use smexec, the user must have the solaris.profmgr.execattr.write authorization. There are two sets of parameters that can be passed to smexec (depending on which option has been selected): authorization parameters and specific parameters for each option. The authorization parameters are common to each option, and they specify the following characteristics:
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