Restrict access to Service Desk knowledge base spaces to Service Desk customers only

Problem Definition

Currently, when linking a Confluence Space to Service Desk the setting "Any active user can view this space" is enabled automatically in the Confluence space. That means, that any Confluence users, regardless of not being Service Desk customers will be able to view the space, regardless of the space permissions.

Suggested Solution

Restrict the access strictly to the Service Desk customers and the Confluece users specified in the space permissions.