Set permission to a published service application (SharePoint Foundation 2010)
In Microsoft SharePoint Foundation 2010, you must establish a relationship between the publishing farm and the consuming farm by giving the consuming farm permission to the Application Discovery and Load Balancing Service Application on the publishing farm. After doing this, the consuming farm can be given permission to other service applications. This article describes how to configure permissions to the Application Discovery and Load Balancing Service Application and published service applications for the consuming farm.