Configure SSO login for apps/websites using Slack as OAuth IDP

Slack Single Sign-On (SSO) login Solution using OAuth Protocol by miniorange helps users to easily and automatically sign-in to multiple apps/websites with single Slack login credentials. Here in this guide we will see the step-by-step process of configuring SSO login between websites/applications and Slack by considering Slack as an IdP (Identity provider) and miniOrange as SP (Service provider). Once configured successfully Slack Single Sign-On will let you securely access your website/application using existing Slack Credentials via OAuth Protocol.

Step 1: Configure miniOrange as Service Provider (SP) in Slack

Go to https://api.slack.com/apps and log into your Slack account.
You will be presented with following screen. Click on Create new App.

You will be shown a form where you have to enter Application Name and Development Slack Workspace. Fill the form with appropriate information and click on Create App.

After creating the slack application, you will be brought to Application Management page. Scroll down to “App Credentials” section. Here you will find given Client ID and Client Secret for your slack application.

Copy these credentials in MO OAuth App configuration on corresponding fields.
Go to OAuth & Permissions

To get the Redirect URL:

Go to miniOrange Admin Console.
From the left navigation bar select Identity Provider.

Copy the Callback URL as Redirect URL required for next step.

Add Redirect URL: In slack application's Redirect URLs section, Click on Add New Redirect URL and enter the same from the MO OAuth Client. Click on Save URLs.

Scope: Go to OAuth & Permissions, select scope from Select Permission Scopes dropdown list and Save Changes. Identity basic is required scope.

Then, scroll Down to Scopes section and add necessary scopes like so and then click on Save Changes.
Most importantly, these scopes must be same on the MO OAuth Application Configuration page.

You have successfully completed your Slack App configurations.

Step 2: Configure Slack as OAuth 2.0 Provider in miniOrange.

Go to miniOrange Admin Console.
From the left navigation bar select Identity Provider. Select Oauth

Enter the following values.

IdP Name	Custom Provider
IdP Display Name	Choose appropriate Name
OAuth Authorize Endpoint	https://slack.com/oauth/authorize
OAuth Access Token Endpoint	https://slack.com/api/oauth.access
OAuth Get User Info Endpoint (optional)	https://slack.com/api/users.profile.get
Client ID	From step 1
Client secret	From step 1
Scope	users.profile:read

Step 3: Configure Your application in miniOrange

Note:

If you have already configured your application in miniOrange you can skip the following steps.

With us, You can configure application according to the the protocol it supports like SAML, OAuth, JWT, Ws-fed etc.
For example lets say the application supports SAML. Then go with the configurations Shown in SAML Application Tab.

SAML Application

Login to miniOrange Admin Console.
Go to Apps >> Manage Apps. Click on Configure Apps button.

Then click on Create App under SAML.

Search for you Application. In case you do not find your app, search for Custom SAML App.

Get the ACS URL and SP Entity ID from your application.
Enter the following values OR click on Import SP Metadata:

Service Provider Name	Choose appropriate name according to your choice
SP Entity ID or Issuer	Your Application Entity ID
ACS URL X.509 Certificate (optional)	Your Application Assertion Consumer Service URL
NameID Format	Select urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress
Response Signed	Unchecked
Assertion Signed	Checked
Encrypted Assertion	Unchecked
Group policy	Default
Login Method	Password

Click on Save to configure Your applcation.
Now to get the IDP metadata of the app configured, Go to apps >> your_app >> select >> metadata tab.

Click on the Show Metadata details in the Information required to Authenticate via External IDPs section. Download the metadata XML file by clicking on Download Metadata button or copy the Metadata URL link.

You need to Upload this metadata in your application.

OAuth Application

To configure OAuth application in miniOrange, login to miniOrange Admin Console.
Go to Apps >> Manage Apps Click Configure Apps button.

Click on Create App under OAuth/OIDC. Click on Open ID Connect App .

You can add any OAuth Client app here to enable miniOrange as OAuth Server. Few popular OAuth client apps for single sign-on are Salesforce, WordPress, Joomla, Atlassian, etc.

Enter following Values:

Client Name	Add appropriate Name
Redirect URL	Get the Redirect-URL from your OAuth Client
Descrption	Add if required
Group Name	Default
Policy Name	As per your Choice
Login Method	Password

Click on Save
Now to provide the required data to OAuth client go to the app configured i.e apps >> your_app >> select >> edit.

Note: Choose the Authorization Endpoint according to the identity source you configure.

When you want to use you want to use miniOrange as OAuth identity server use this endpoint: https://{mycompany.domainname.com}/moas/idp/openidsso
If you are configuring any Identity Provider in Identity Providers Menu and not using miniOrange as IDP use this endpoint: https://{mycompany.domainname.com}/broker/login/oauth{customerid}

JWT Application

Click on Create App under JWT.

Select JWT App.

Configure the name for your application and configure Redirect-URL which tells where to send JWT response. Redirect-URL should be an endpoint on your application where you want to achieve SSO.

In case you are setting up SSO with Mobile Applications where you can't create an endpoint for Redirect or Callback URL, use below URL.

https://login.xecurify.com/moas/jwt/mobile

Click Save
To get the SSO link for your application, Go to Apps >> your_app >> select >> Edit.

Then, copy the Single Sign On Url and verify SSO setup by browsing that url.

On successful authentication, you will be redirected to configured Redirect or Callback URL with JWT token
You will need to download a certificate from App > Manage Apps, and click Certificate link against your configured application. This certificate will be used for signature validation of JWT response.

Download certificate to proceed with SSO

Step 4: Login using IDP selection page (Optional)

You can configure multiple IDPs (Identity Providers) and give users the option to select the IDP of their choice to authenticate with.
For Example - It could be multiple AD domains belonging to different departments or multiple okta organizations.

Few usecases where customers configure multiple IDPs -

Suppose you have a product which many of your clients use and each client has their own unique IDP so you want them to SSO into your product as well using their existing IDP only. miniOrange provides a centralized way to connect with all IDPs in a very easy manner and integrate SSO into your application.
Suppose you are providing a course to many universities, each having a unique SAML, OAuth protocol supported IDP's like Shibboleth, ADFS, CAS, etc. You can provide Single Sign-On (SSO) into your course application to all these universities by integrating with all of them using a single platform provided by miniOrange.
This is the endpoint to call from your SAML application -

For Cloud IDP - https://login.xecurify.com/moas/discovery?customerId=<customer_id>

For On-Premise IDP - https://yourdomain.com/discovery?customerId=<customer_id>
You should copy the Customer Key from admin console-> Settings -> and replace it with <customer_id> here. Once configured in SP, when you initiate the login from Service Provider, a user will be redirected to IDP Selection Page listing all IDPs configured for that account.

You can see the screenshot below of the IDP Selection Page with a list of IDPs .

Note: To view the IDP in drop-down list, go to Identity Providers tab > against your configured IDP > Select >Edit , here Enable the Show IdP to Users option.

Select your IDP (Identity Provider) to login

You can also change the look and feel of this page. Login to miniOrange Admin console. Navigate to Customization -> Branding Configuration. See the below screenshot for reference-

You can customize the title of this page.
Change the logo and favicon for this page.
Change the background and button color for this page from admin UI.

In this guide, you have learnt how to successfully configure the Slack Single Sign-On (SSO) by integrating Slack as OAuth IdP Provider with miniorange as SP. This solution will let your users securely authenticate themselves for apps/websites using their existing Slack login credentials.

Additional Resources

We can connect with any External IDP via SAML, OAuth, CAS or User Directory via LDAP, Database Connection or APIs.
Contact us on idpsupport@xecurify.com for quick guidance(via email/meeting) on your requirement and our team will help you set up SSO with your IdP in no time.

Step 1Configure miniOrange as SP in Slack Portal
Step 2Configure Slack as OAuth IDP 2.0 Provider in miniOrange.
Step 3Configure your application in miniOrange

A] SAML Application
B] OAuth Application
C] JWT Application

Step 4Login using IDP selection page(optional)
Additional Resources

Single Sign-On (SSO) for your Apps/Websites using Slack as OAuth Identity Provider (IDP) | Slack OAuth SSO Login

Step 1: Configure miniOrange as Service Provider (SP) in Slack

Step 2: Configure Slack as OAuth 2.0 Provider in miniOrange.

Step 3: Configure Your application in miniOrange

Note:

If you have already configured your application in miniOrange you can skip the following steps.

SAML Application

OAuth Application

JWT Application

Step 4: Login using IDP selection page (Optional)

Additional Resources

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For Cloud IDP -	https://login.xecurify.com/moas/discovery?customerId=<customer_id>
For On-Premise IDP -	https://yourdomain.com/discovery?customerId=<customer_id>