IDOL 12.13

# Retrieve Groups from Azure Active Directory

This section describes how to retrieve user and group information from an Azure Active Directory. OmniGroupServer retrieves information from Azure Active Directory through the Microsoft Graph API.

## Set up an OAuth Service Application

To use the Microsoft Graph API, you must go to the Azure portal and register an application to represent OmniGroupServer. Full instructions about how to create an application are available in the Microsoft documentation.

To set up an OAuth Service Application

1. Go to the Microsoft Azure Portal.

2. Click New registration.

   1. Type a name for the new application.

   2. Specify a redirect URL. The "type" of the redirect URL should be "Web". The redirect URL must match the value of the `RedirectUrl` parameter in the OAuth tool configuration file, `oauth_tool.cfg`, that is supplied with OmniGroupServer. The default value is `http://localhost:7878/oauth`.

3. Click Certificates and Secrets and upload a certificate to use to authenticate the OmniGroupServer. You can use a self-signed certificate.

   To generate a self-signed certificate using OpenSSL

   The following commands demonstrate how to use OpenSSL to generate a self-signed certificate. The output file `certificate.cer` is the file to upload to Azure. The file `certificate.pfx` is a PKCS#12 file that includes the private key. You will need this file in a later step, to use the OAuth configuration tool.

       openssl req -x509 -days 365 -newkey rsa:2048 -keyout certificate.pem -out certificate.pem

       openssl pkcs12 -export -in certificate.pem -out certificate.pfx

       openssl x509 -pubkey -outform der -in certificate.pem -out certificate.cer

4. Click API Permissions > Add a permission.

   The Request API permissions dialog box opens.

5. Click Microsoft Graph, followed by Application permissions and select the following permissions.

   Permissions
   Directory.Read.All
   Group.Read.All
   GroupMember.Read.All
   OrgContact.Read.All
   User.Read
   User.Read.All

6. Run the OAuth configuration tool that is supplied with OmniGroupServer.

   1. Open the OAuth tool configuration file, `oauth_tool.cfg`, in a text editor.

   2. In the `[Default]` section, set any SSL or proxy settings that are required to access the Graph API:

      `SSLMethod` | The version of SSL/TLS to use.
      `ProxyHost` | The host name or IP address of the proxy server to use.
      `ProxyPort` | The port of the proxy server to use.

      For example:

          SSLMethod=NEGOTIATE
          ProxyHost=10.0.0.1
          ProxyPort=8080

   3. In the `[Azure]` section, set the following parameters:

      `AdminConsentUrl` | Replace the placeholder `{TenantId}` with your Microsoft 365 Tenant, for example `mydomain.onmicrosoft.com`.
      `TokenUrl` | Replace the placeholder `{TenantId}` with your Microsoft 365 Tenant, for example `mydomain.onmicrosoft.com`.
      `CustomValue0` | The path to the `.pfx` file that contains the certificate and private key to use to authenticate the OmniGroupServer.
      `CustomValue1` | The password for the private key.
      `AppKey` | The application (client) ID that was provided when you created the OAuth application.

   4. Open a command-line window and run the following command:

      `oauth_tool.exe oauth_tool.cfg Azure`

      A web browser opens, asking you to log in and grant admin consent.

   5. Log in and grant admin consent.

      The web page displays a message stating that the OAuth details have been successfully stored, and the OAuth tool creates the files `oauth.cfg` and `oauth2_sites.bin`. When you configure OmniGroupServer, import the parameters from `oauth.cfg` into your task configuration.

## Configure OmniGroupServer

This section describes how to configure an OmniGroupServer repository to store information from Azure Active Directory.

To retrieve security information from Azure Active Directory

1. Open the OmniGroupServer configuration file.

2. In the `[Repositories]` section, create a repository. For example:

       [Repositories]
       Number=1
       0=AzureAD

       [AzureAD]

3. Include the OAuth configuration parameters necessary to authenticate with the Azure Active Directory. For example:

       [AzureAD] < "oauth.cfg" [OAUTH]

   For information about how to generate the `oauth.cfg` file, see Set up an OAuth Service Application.

4. Set the following configuration parameters:

   `GroupServerLibrary` | The path (including the file name) to the library file that allows the group server to access the repository. Use the library `ogs_azure`.
   `UseSystemProxy` | Specifies whether to obtain details about your HTTP proxy from the system. You might need to configure a proxy server to access the Microsoft Graph API.
   `SSLMethod` | The SSL/TLS version to use.

   For example:

       [AzureAD] < "oauth.cfg" [OAUTH]
       GroupServerLibrary=ogs_azure
       UseSystemProxy=true
       SSLMethod=negotiate

   For a complete list of configuration parameters that you can use, refer to the OmniGroupServer Reference.

5. Save and close the OmniGroupServer configuration file.

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Version 12.13 | Last updated October 2022

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Product: IDOL 12.13

Topic Title: Retrieve Groups from Azure Active Directory