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Security In Business Connectivity Services In SharePoint 2013

There are some types of authentication scenarios where the external system isn’t allowed to accept credentials directly from Business Connectivity Services. Yet the external system is able to accept them from 3rd parties and an authentication service that it is able to trust. That 3rd party is generally going to be a security token provider.

 They will accept a grouping of information called assertions about a user. The entire grouping is called the claim, and it can have plenty of information about the person requesting it. This can extend well beyond the username and password. The claim may contain metadata including the email address of that requestor or a security group that they belong to.

 With 3rd party authentication, the service performed will create a security token from the user. The Business Connectivity Service is then going to present that security token to the external system. It will look to see what the data is that the user is authorized to have access to.

When the external system in use doesn’t support credentials based or claims based authentication, then you have to create a customized solution that will take your own needs into consideration. It will take the credentials that you create with Business Connectivity Services and create a format that the external system is going to accept. This is possible to create for OData that has been secured either with OAuth or a custom ASP.NET HTTP module.

You are going to have to find out what the stakeholders of the business see as the solution as well as how they feel users should interact with it. They may need to interact with the data through Apps for Office, External lists, External web parts, Office 2013 , On premises SharePoint installation, SharePoint Online, and SharePoint Server.

The way in which the users will access the data determines how you will set up the external content type for Business Connectivity Services. This is how the users will be able to access that external data. When Business Connectivity Services offers a solution requiring apps for Office and SharePoint application, the external content type has to be customized to such an application.

If you don’t have to rely on apps for Business Connectivity Services, then the external content type has to be developed for the Business Data Connectivity only. Such external content is stored in the BDC Metadata Store. With on premises SharePoint 2013 installation, the external content type is stored in the BDC Metadata Store. A farm administrator will need to manage the security for them.

It is possible to share those external content types with multiple Business Connectivity Services web application. With SharePoint Online, the external content types have to be stored for you to use them in an all on site collection. The apps for SharePoint and Office scoped external content gets stored as XML file in the app for these applications. They can’t be used by other apps regardless of if they are on premises or SharePoint Online.

The connection setting objects offer the connection information including Names for any certificates required, Service address for the external data, Type of authentication in use, and URL.

With connection settings objects, they are separate from an external content type. The Business Connectivity Services solution has to connect with an external system. It uses the information that you select to define that connection separately from the external content type that was developed. You can only use connection settings objects with OData. Both of the apps are external content types.

The connection settings objects get managed in SharePoint Central Administration. All of the solutions have to be granted permission to use connection settings object. They can be used by multiple Business Connectivity Service solutions.  If the apps for SharePoint and Office are accessed through an OData source, you can create an automated app scoped external content type.

This is completed with the use of Visual Studio 2013. It has tools built into it that allow you to create external content types. Just point the Visual Studio 2013 at the OData service URL. The external content type can be used by an external data list. The app scoped external content type can also be used with a custom code including .NET using CSOM or JavaScript using JS CSOM.

You will have to include in your plan who will have permissions for which objects within that Business Connectivity Services solution. You will be able to grand as well as to restrict access based on the solution that you select. You will need to work with the external system administrator as well as the farm administrators for SharePoint to successfully set this up. The online administrators can configure the permission. There are three roles that must be involved with any Business Connectivity Services solution:

There are many roles that fall into this particular category. They include Managing permissions on the external system, Creating and managing Business Data Connectivity Service application, Importing Business Data Connectivity models, and Managing permissions on the BDC Metadata Store.

The SharePoint farm administrators have to be involved with publishing the application and creating the management connection objectives if the apps for SharePoint are using Business Connectivity Services.

This role involves understanding the various business needs for the solution. The common tasks include Creating external content types, Creating BDC models, and Creating the apps for SharePoint that Business Connectivity Services will use.

These are the users that will manipulate and use the external data from the Business Connectivity Services solution. There can be many user roles for a solution, and the users can have different levels of permission. That level will depend on their role within the organization.

There are four main elements to all Business Connectivity Services solutions that have to have managed permissions:

Each external system needs a method for authentication to take place as well as for authorization. Working with the external system administrator allows for identifying a method to grant access to the solutions users that are parallel to the principle of least privileges. This offers a mapping of groups of users from the Business Connectivity Services to a single account on the external side of things.

It will restrict access until a user has been authenticated and authorized to access data. Mapping between individual accounts and each system is also a possibility to consider. The external system will need to use the Secure Store Service though for authentication unless the credentials are already found within SharePoint.

The central infrastructure of the Business Connectivity Services has to be looked at because it is a shared service application. It has to be configured and managed so that the permissions are accessible through Central Administration. Creating a shared service application requires the rights of a farm administrator.

It is an option to delegate administration to Business Data Connectivity service application after you create it. You can manage the assignment of permissions to BDC Metadata Store too in Central Administration. The permissions assigned allow for management of BDC models, External content types, and External Systems.

It is necessary to assign and execute permissions for an external content type to all users within the Business Connectivity Services solution. The tables below show a detailed mapping of those objections, permissions, and abilities.

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