Slack SAML Single Sign-On (SSO) | Login into Slack using WordPress

Slack SAML Single Sign-On (SSO) | Login into Slack using WordPress


Slack

Slack SSO - Login using WordPress Users (WP as SAML IDP) Plugin enables Single Sign-On (SSO) login into Slack using WordPress Login credentials. In this guide we will Setup SAML Single Sign-On (SSO) with WordPress in Slack by configuring Slack as Service Provider (SP) and WordPress as Identity Provider (IDP).

Note: Premium Version of WP SAML IDP Plugin is required to set up SSO with Slack.

Pre-requisites: Download And Installation

To integrate the WordPress site as an Identity Provider, you will need to install the miniOrange Login using WordPress Users (WP as SAML IDP) plugin:

Login with WordPress users to any application. SAML SSO or WSFED SSO into Tableau, Zoom, Moodle LMS, etc using WP users. [24×7 SUPPORT]

 Tested with 5.8.2

Guide to configure Slack Single Sign-On (SSO) Login with WordPress

1. Setup Slack as SP (Service Provider)

  • Go to the WordPress IDP plugin, navigate to the IDP Metadata tab.
  • Here, you can find the Identity Provider Metadata URL /XML Metadata or endpoints like IDP Entity ID, SAML Login URL, SAML Logout URL (Premium Feature), Certificate for SP configuration.
  • Configure SAML SSO in Slack (SP) with WordPress - Slack WordPress SSO Login
  • Open a new browser tab or window, Log in to your Slack account as Account Admin.
  • Go to Settings & administration and select Workplace settings.
  • Selct workplace settings - SSO Login with WordPress
  • Select Authentication and click on Configure for SAML Authentication.
  • Configure SAML Authentication - SSO Login with WordPress
  • Enter the following values in the respective fields:
  • SAML 2.0 Endpoint (HTTP) You can find this in IDP Metadata tab as SAML Login URL
    Identity Provider Issuer You can find this in IDP Metadata tab as IDP-EntityID
    Public Certificate You can find this in IDP Metadata tab as Certificate
    Enter required details - SSO Login with WordPress
  • Under Advanced Options, use the default value for the Service Provider Issuer, it must be https://slack.com.
  • use of default value - SSO Login with WordPress
  • Under Settings, select the desired options for SAML Authentication for users and workspace.
  • Note: It's recommended to use 'It’s optional' for the Authentication for your workspace must be used by until the SAML configuration is fully tested. This will allow you to use both – username/password and SAML authentication options.

  • Click on Save Configuration.
  • Save Configuration - SSO Login with WordPress

You have successfully configured Slack as Service Provider.

2. Configure WordPress (WP) as IdP (Identity Provider)

  • In the WordPress IDP plugin, navigate to the Service Provider tab and enter the values corresponding to the information from Slack.
  • Service Provider Name Slack
    SP Entity ID or Issuer https://slack.com
    ACS URL https://<yourdomain.slack.com>/sso/saml
    NameID Format urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress
    Assertion Signed Check to sign the SAML Assertion.
    WordPress details - SSO Login with WordPress
  • Click on the Save button to save your configuration.

3. Attribute Mapping (This is a premium feature)

  • In the WordPress IDP plugin, navigate to the Attribute/Role Mapping tab.
  • In the User Attributes section, enter the following information and click on Save .
  • You can also add more attributes by clicking on + sign to add attributes.
  • Name User Meta Data
    User.Email user_email
    User.Username user_login
    first_name first_name
    last_name last_name
    WP Attribute Mapping - SSO Login with WordPress

In this Guide, you have successfully integrated Slack - SAML Single Sign-On (SSO) with plugin- Login using WordPress Users (WP as SAML IDP). Configuring Slack as SP and WordPress as IDP. This solution ensures that you are ready to roll out secure Single Sign-On (SSO) access with SAML 2.0 Authentication into Slack using WordPress login credentials.

Additional Resources

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