6222081fd7dcea7dfb193788d138c457?s=60 avatar

6222081fd7dcea7dfb193788d138c457?s=60

Former Auth0 Employee

Jerrie Pelser

Learn how to use the new OAuth middleware in ASP.NET Core to authenticate a user.

Authenticating a user with LinkedIn in ASP.NET Core

eugenio-pace-new-avatar

Pace co-founded Auth0 in early 2013 with CTO and “brother-in-arms” Matias Woloski while living 7,000 miles apart from each other. Since then, Pace has played an instrumental role in growing Auth0 into a leading identity management company that is loved by developers and trusted by global enterprises. He loves traveling and has visited more than 35 countries for business and pleasure. He currently lives in Redmond, Washington with his wife, two sons, and their labrador retriever. In his spare time, he enjoys the outdoors, rowing, riding bikes, spending time with his family, restoring his 1970 Karmann Ghia, writing his blog, and reading history and philosophy.

CEO and Co-Founder

Eugenio Pace

If your app uses Auth0 for authenticating users, adding SSO with LinkedIn, PayPal, GitHub, Twitter and Facebook is just a click away.

If your app uses Auth0 for authenticating users, adding SSO with LinkedIn, PayPal, GitHub, Twitter and Facebook is just a click away:

![SSO LinkedIn PayPal Twitter Facebook](https://images.ctfassets.net/23aumh6u8s0i/5QzfRB3mY8rZ1sdvo9M1Z5/d79b7816acedd5a96f4b3b3b1e1972fe/auth0-li-pp-gh-tw-fb)

Each provider configuration page will allow you to fine tune the information you'd like your customers to disclose. As an example, when selecting PayPal you can choose to request:



![SSO PayPal](https://images.ctfassets.net/23aumh6u8s0i/60ridb4T2az6GMSuVUTjt/0d8cb7b520a8f1fb0c868146e52b89f3/auth0-paypal)

Facebook is particularly prolific in profile scopes, but we've added explanations to each one to help you choose the right ones:

![SSO PayPal](https://images.ctfassets.net/23aumh6u8s0i/JPdCVyLWfLxDW0yarDsmZ/6f7c2e1ac52fc3ad4af8e97f272cfc62/auth0-fb)

Registration of apps with each of these providers is different and sometimes difficult to find online. We've documented all of them, accesible right from each configuration screen:

![SSO GitHub](https://images.ctfassets.net/23aumh6u8s0i/6SGWlvUK5rL7MxwuOYyD8N/11e6f5145684a18d84edb3941b8cf045/auth0-github)

Here's a list for your reference:

* [Facebook](https://docs.auth0.com/facebook-clientid)
* [LinkedIn](https://docs.auth0.com/linkedin-clientid)
* [GitHub](https://docs.auth0.com/github-clientid)
* [Twitter](https://docs.auth0.com/twitter-clientid)
* [PayPal](https://docs.auth0.com/paypal-clientid)

Finally, the __Auth0 Login Widget__ will show the new connections if you enable them:

![SSO social login widget](https://images.ctfassets.net/23aumh6u8s0i/425HUU680SM4phAquCqxaE/d08b3317ec442e877635db6dfe7deaec/auth0-social-login-widget)


[Try Auth0 yourself!](https://auth0.com)

"linkedin"