This documentation is for WSO2 Enterprise Mobility Manager 3.2.0. View the documentation for the latest release.
Key Concepts - Enterprise Mobility Manager 3.2.0 - WSO2 Documentation
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Let's take a look at some concepts and terminology that you need to know in order to follow the use cases of WSO2 Enterprise Mobility Manager (WSO2 EMM), which is bundled inside WSO2 IoT Server.

Please note that all the sections listed below take you to the WSO2 IoT Server documentation.

 


Devices 

A device is a physical computing unit capable of achieving one or multiple tasks. WSO2 IoT Server enables organizations to enroll, secure, manage, and monitor devices, irrespective of the mobile operator, service provider, or the organization.

Device Ownership 

In some corporate environments, mobile devices are used to carry out organizational tasks such as email access. These devices are categorized into two main groups based on the ownership:

  • Bring Your Own Device (BYOD): These devices are owned by the employee and managed by the employer. They are subject to policies and conventions enforced by the employer.
  • Corporate Owned, Personally Enabled (COPE): These devices are owned and managed by the employer. 

Mobile devices

These are hand-held devices that are usually used for day-to-day ordinary activities such as making phone calls, sending emails, and setting up alarms. WSO2 IoT Server supports managing Android, iOS and Windows mobile devices.


Device Groups

WSO2 IoT Server allows you to group multiple enrolled devices in order to monitor multiple devices in one go. 


Mobile Applications

A mobile application is a software application specifically created to run on mobile devices. WSO2 IoT Server enables managing Android, iOS, and Windows mobile applications.

WSO2 IoT Server supports the following two UIs to help Mobile App Creators/Publishers  manage mobile applications: 

  • App Publisher: This UI enables you to create and manage mobile applications.

  • App Store: This UI enables you to install and update mobile applications on mobile devices. It also comes with social features such as rating and liking that help Mobile App Creators to understand the popularity and usability of their mobile applications.

For more information on mobile application management: 


Configurations

WSO2 IoT Server enables two kinds of configurations:

To manage IoT devices supporting HTTP, preliminary configurations are sufficient. To manage other IoT devices you need to perform secondary configurations as well.


Operations

Each device supports a set of operations depending on its platform (i.e., Android, iOS, Windows),  such as screen lock, device unlock, and device reboot. WSO2 IoT Server facilitates these operations to be performed remotely via the Device Management Console.

Operations can be performed by the following roles: 

  • Device Admin: Users with this role can perform operations on multiple devices that are under their control.
  • Device Owner: Users with this role can perform operations on their own devices.

To view the list of operations supported for the Android, iOS, and Windows devices, see Supported Operations for Mobile Devices.


Policies

A policy is a set of configurations enforced on a device, that influences the device functionality. Policies are able to control the settings on devices, inform the user when the device is not responding as expected and much more. For example, you can disable the camera on a mobile device via a policy.

Policies can be created and applied to devices by the following user roles:

  • Device Admin: Users with this role can create and enforce policies on multiple devices, under their control, and monitor policy compliance. This behavior is more relevant to mobile device admins in a corporate environment.

  • Device Owner: Users with this role can create and enforce policies on their own devices. This behavior is more relevant to IoT device owners, but depending on your organizational policies and procedures it can apply to mobile device owners as well.

In WSO2 IoT Server, a collection of policies is called a profile. Policy profiles allow you to apply multiple policies to a device collectively.  WSO2 IoT Server has predefined policies in place to manage mobile devices and supports creating custom policies for IoT devices.

Let's take a look at how a policy is enforced on a device:

  • Step 1: Filtering based on the Platform (device type) Policies are filtered based on the mobile platform to match each policy with the platform of the registered device.
  • Step 2: Filtering based on the device ownership type Next, the policies are filtered based on the device ownership type (i.e., BYOD or COPE) to match with the device ownership type of the registered device.
  • Step 3: Filtering based on the user role or name The policies are filtered again to match the device owners username or role.
  • Step 4: Enforcing the policy Finally, the policy having the highest priority out of the pool of filtered policies is enforced on the registered device. 

For more information on creating and applying policies, see Policy Management


User Management

You can create user accounts, create roles, assign permissions, and manage the devices of the users in your organization using WSO2 IoT Server.

User Roles

There are several user categories that are serviced by WSO2 IoT Server:

  • Device Owner: These users own devices that need to be managed via WSO2 IoT Server.

  • Device Creator: These users register devices that need to be managed via WSO2 IoT Server. Depending on the organizational structure, this role might be played by a Device Admin.

  • Device Admin: These users perform administrative tasks related to WSO2 IoT Server, such as user management, configuring security, and installing features. For more information, see Product Administration.

  • Device Manufacturer: These users create innovative device types that need to be managed by WSO2 IoT Server. For more information, see Device Manufacturer Guide.

  • Mobile App Creator: These users create mobile applications using WSO2 IoT Server's App Publisher. Depending on the organizational structure, this role might be played by a Mobile App Publisher. For more information on mobile app creation see the following sections:

  • Mobile App Publisher: These users publish the mobile applications created by Mobile App Creators to the App Store.

For more information user role management, see Managing Roles.

Users

WSO2 IoT Server enables creating and managing users in your organization and assigning User Roles to them. You can create users manually or by integrating WSO2 IoT Server with an existing user store. For more information on user management, see Managing Users.


APIs

An Application Programming Interfaces (API) is a way of exposing software functionality without revealing its implementation. APIs enable software applications to interact with each other and exchange data. Following are the list of APIs WSO2 IoT Server supports:

  • Device Management APIs: These APIs expose the device management functionality associated with WSO2 IoT Server  Device Management Console. You can also use them to facilitate device management functionality through a third-party UI as well.
  • Device APIs: These APIs ensure communication between devices and the WSO2 IoT Server.

  • App Management APIs: These APIs expose app publishing and app portal functionality associated with WSO2 IoT Server App Publisher and App Store respectively. You can also use them to facilitate app publishing and app portal functionality through third-party UIs as well.

  • API Management APIs: These APIs expose API publishing and API portal functionality associated with WSO2 IoT Server.  

  • Certificate Management APIs: These APIs implement  Simple Certificate Enrollment Protocol (SCEP)  so that WSO2 IoT Server can authenticate and authorize devices with SSL certificates.

For more information, see  Device Management REST APIs.


Security

Security refers to the means through which computer systems are protected from damage and disruption without being compromised to risks and vulnerabilities. WSO2 IoT Server implements security at the application level and transport level.

Application-level Security

Application-level security refers to the security requirements at the application level. Following is a list of concepts related to application-level security:

Encryption

Encryption is the process of translating/encoding data/messages (plaintext) using an algorithm (cipher) into a secret code (ciphertext) that can only be accessed by authorized entities with a secret key or a password. 

Authentication

Authentication is the process used to distinctly identify a certain entity using the following factors:

  • Knowledge factor: This is something the user knows, e.g., password, PIN, and security question.
  • Ownership factor: This is something the user has, e.g., identity card, mobile phone, and security token.
  • Inherence factor: This is something the user is/does, i.e., biometrics. 

Authentication is implemented in either of the following forms:

  • Single-factor authentication: This mechanism utilizes a single factor to authenticate an entity.
  • Two-factor authentication: This mechanism utilizes two factors to authenticate an entity, e.g., password and security token.
  • Multi-factor authentication: This mechanism utilizes more than two factors to authenticate an entity.

WSO2 IoT Server uses OAuth, Basic Auth, JWT, and mutual SSL for authentication.

Authorization

Authorization is the process via which an entity is granted permission to access to another entity, e.g., data, resources, system. In general, authorization takes places subsequent to authentication. WSO2 IoT Server uses Role-based access control (RBAC) and scopes to implement authorization.

Certificates

A certificate (also known as SSL certificate) is an encryption tool issued by a trusted certification authority (CA) that encrypts data transmitted between a client and a server. WSO2 IoT Server uses Simple Certificate Enrollment Protocol (SCEP) to securely enroll and authenticate iOS devices by creating a certificate for each device. For more information, Certificate-based Authentication and Certificate Management.

Tokens

A token is a credential created by an authentication server that grants an entity to access protected resources. WSO2 IoT Server users tokens to identify devices and their ability to access protected resources. For more information, see Token-Based Authentication and Generating the Access Token.

Scopes

Scopes define the permission model that enables invoking an API. For more information, see Getting the Scope Details of an API and Device Management API Scopes

Single Sign-On

Single sign-on (SSO) enables users to provide their credentials once and obtain access to multiple applications. A user who has already signed in to an application is not prompted for credentials to access other applications until that session terminates. 

Once signed in to an application, users are not prompted for their credentials to access other applications until the session terminates. WSO2 IoT Server enables SSO for its web applications, i.e., Device Management Console, API Store, App Publisher, and App Store. 

Role-based Access Control

Role-based access control (RBAC) is a type of access control that restricts access to authorized users based on their role.

Transport-level Security

Transport-level security (TLS) is a mechanism that secures internet and intranet communications. WSO2 IoT Server uses mutual SSL, certificates, and keystores to implement transport-level security. 


User Interfaces

WSO2 IoT Server comes with the following user interfaces (UIs):

  • Device Management Console: This UI facilitates all the administrative tasks pertaining to WSO2 IoT Server.
  • API Store: This UI displays all the APIs associated with WSO2 IoT Server.
  • App Publisher: This UI enables you to create and manage mobile applications.
  • App Store: This UI enables you to install and update mobile applications on mobile devices. It also comes with social features such as rating and liking that help Mobile App Creators to understand the popularity and usability of their mobile applications.


Databases

A database is a collection of data structured in an easily accessible manner. WSO2 IoT Server is shipped with an H2 database, which serves as the default Carbondatabase that stores all the related data, e.g., device details and user details. 

The H2 databases enable starting the WSO2 IoT Server without performing any configurations. However, it is not recommended to use H2 databases in the production environments that store mission-critical information. 

Following are some important spaces maintained in the WSO2 IoT Server databases:

  • Registry: The registry is a virtual file system implemented on top of the JDBC layer that is utilized for persisting data and storing configurations. It is partitioned into the following three spaces:
    • Local: This partition contains the system configurations and the runtime data pertaining to a single product instance. This partition is not meant to be shared among multiple servers. 
    • Config: This partition contains product-specific configurations. These configurations can be shared across multiple instances.
    • Governance: This partition contains data and configurations that are shared across the platform, e.g., WSDLs, schemas, licenses, and APNS certificates.
  • User Store

Database Types

The following table lists out the databases associated with WSO2 IoT Server and their criticality.

Database TypeContentCriticality
CarbonRegistry details.Not Critical
RegistryConfiguration and governance registry details.Critical
User ManagerUser permissions, roles and superuser detailsCritical
CDMCore device management data, e.g., device details, device operations, and device policies.Critical
Plugin

These databases hold device type details. By default there are three types of plugin databases:

  • Android DB: Holds Android device details, e.g., magic tokens.
  • iOS DB: Holds iOS device details and push tokens to call APNS.
  • Windows DB: Holds Windows device details.
Critical
Certificate ManagementThe mutual SSL certificate details.
App ManagerApplication related details.Critical
StoreStore related data.Not Critical
SocialData related to application ranking, ratings, and comments.Depends on the use case
Analytics Event Store

Persisted incoming events streamed from WSO2 Data Analytics Server (WSO2 DAS) as raw data in a tabular structure

Critical
Analytics Processed Data StoreSummarized events data.Critical
MB Store

Messages passed through the broker.

Critical
Metrics

Metricspertaining to server performance.

Not Critical

Database configurations made in a standalone setup are different to the database configurations made in a production-ready distributed setup.

  • Standalone setup: The registry and the user manager databases use the same schema in a single SQL file. Therefore, in a standalone setup, the Carbon database acts as both the registry databse and the user manager database containing all three registry spaces, user permissions, and roles.
  • Distributed setup:
    • In a distributed setup we may share the user management data, configurations, and governance registry data with every product instance. Storing all those data within a single Carbon database in not an effective option. As an alternative they are split into three separate schemas, Carbon, registry, and user manager.
    • All the critical databases mentioned above should be pointed to the database used in the production setup. The non-critical databases can remain in the H2 databases.

Pointing Product Profiles to Databases

The following diagram depicts how databases should be pointed to WSO2 IoT Server profiles in a production-ready setup. 

Make sure to point the core profile and the analytics profile to the same registry and the user manager databases.




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