In SharePoint webparts are the reusable sections in a SharePoint web page. We can add the functionality to SharePoint site by customizing webparts. We can connect the links to one WebPart to another WebPart by using WebPart connections.
We can manage the security of webparts from SharePoint central administration. To manage the security, Navigate to Security section in SharePoint central Administration, Click on Manage Web Part security link in General security section.
Select web application in Security for Web Part Pages page, Web Application section. In “Web Part Connections” section, we can specify the users to allow the connections by passing data or values from a source Web Part to target Web Part. By Selecting “Allow users to create connections between Web Parts” option we can allow people to create the connection. By Selecting “Prevents users from creating connections between Web Parts, and helps to improve security and performance”
In Online Web Part Gallery section, we can specify users to access the online Web Part gallery. By Selecting “Allow users to access the online Web Part Gallery” option we can allow users to access the online WebPart.
We can allow the scriptable webparts by specifying “allow contributors to add or edit scriptable Web Parts” option in Scriptable Web Parts section. Click on Ok to save the settings