# GitHub

This document describes the use of GitHub as an identity provider for Pomerium.

Before we proceed, please be aware that GitHub API does not support OpenID Connect, just OAuth 2.0. For this reason, it was challenging to implement revocation of a user's Access Token (a string representing the granted permissions) when they sign out from Pomerium's dashboard.

In addition, the teams of the organization(s) a user belongs to, will be used as groups on Pomerium.

# Setting up GitHub OAuth 2.0 for your Application

  1. Log in to Github or create an account.

  2. Navigate to your profile using the avatar on the navigation bar.

  3. Go to your settings.

GitHub settings

  1. Click the Developers settings and create a new OAuth Application.

GitHub OAuth2 Application creation

  1. Create a new OAuth2 application by filling the form fields above with the following parameters:
Field Description
Application name The name of your web app
Homepage URL The homepage URL of the application to be integrated with Pomerium
Authorization callback URL https://${authenticate_service_url}/oauth2/callback, authenticate_service_url from pomerium configuration

After the application had been created, you will have access to the credentials, the Client ID and Client Secret.

# Pomerium Configuration

After creating your GitHub OAuth application, you can create your Pomerium configuration like the example below:

authenticate_service_url: https://authenticate.localhost.pomerium.io
idp_provider: "github"
idp_client_id: "REDACTED"   // github application ID
idp_client_secret: "REDACTED"   // github application secret

Whenever a user tries to access your application integrated with Pomerium, they will be presented with a sign-on page as below:

GitHub Sign-on Page