All the resources except (Diagnostics, Security/Authenticate and Security/UserGroups) require a Basic authentication header.
The header needs four pieces of information. UserName, UserGroup, Location and Password.
The four pieces of information above should be joined using : and then base64 encoded.
The user should belong to the usergroup and the password should match. The user group information is also used for control group restrictions and location is validated and is used for auditing.