Providing rights

Access Management does not decide who has access to which IT services. Rather, Access Management executes the policies and regulations defined during Service Strategy and Service Design. Access Management enforces decisions to restrict or provide access, rather than making the decision.

As soon as a user has been verified, Access Management will provide that user with rights to use the requested service. In most cases this will result in a request to every team or department involved in supporting that service to take the necessary action. If possible, these tasks should be automated.

The more roles and groups that exist, the more likely that Role Conflict will arise. Role Conflict in this context refers to a situation where two specific roles or groups, if assigned to a single user, will create issues with separation of duties or conflict of interest. Examples of this include:

• One role requires detailed access, while another role prevents that access
• Two roles allow a user to perform two tasks that should not be combined (e.g. a contractor can log their time sheet for a project and then approve all payment on work for the same project).

Role Conflict can be avoided by careful creation of roles and groups, but more often they are caused by policies and decisions made outside of Service Operation – either by the business or by different project teams working during Service Design. In each case the conflict must be documented and escalated to the stakeholders to resolve.

Whenever roles and groups are defined, it is possible that they could be defined too broadly or too narrowly. There will always be users who need something slightly different from the pre-defined roles. In these cases, it is possible to use standard roles and then add or subtract specific rights as required – similar to the concept of Baselines and Variants in Configuration Management (see Service Transition publication). However, the decision to do this is not in the hands of individual operational staff members. Each exception should be coordinated by Access Management and approved through the originating process.

Access Management should perform a regular review of the roles and groups that it has created and manage to ensure that they are appropriate for the services that IT delivers and supports – and obsolete or unwanted roles/groups should be removed.

Date: 2014-12-29; view: 1015