Sample Use Cases - Rules with Passwordless Authentication

If you want to extend Auth0, we highly recommend you use Actions, which are a cornerstone of our overall extensibility product. With Actions, you have access to rich type information, inline documentation, and public npm packages, and can connect external integrations that enhance your overall extensibility experience. To learn more about what Actions offer, read Understand How Auth0 Actions Work.

With rules, you can handle more complicated cases than is possible with passwordless connections alone. For instance, you can add extra precautions to further ensure possession of an email address or device.

Require Multi-factor Authentication for users who are outside the corporate network

Let's say you want to require multi-factor authentication (MFA) for any users who are accessing the application using a passwordless connection from outside your corporate network.

Using a rule, you can check whether a user is authenticating using a passwordless method (sms, email) and if their session IP falls outside of the designated corporate network, prompt them for a second authentication factor.

You could also trigger this rule based on other criteria, such as whether the current IP matches the user's IP allowlist or whether geolocating the user reveals they are in a different country from the one listed in their user profile.

To do this, you would create the following rule:

function(user, context, callback) {
  const ipaddr = require('ipaddr.js');
  const corp_network = "192.168.1.134/26";
  const current_ip = ipaddr.parse(context.request.ip);
  // is auth method passwordless and IP outside corp network?
  const passwordlessOutside = context.authentication.methods.find(
    (method) => (
      ((method.name === 'sms') || (method.name === 'email')) && 
      (!current_ip.match(ipaddr.parseCIDR(corp_network)))
    )
  );

  // if yes, then require MFA
  if (passwordlessOutside) {
    context.multifactor = {
      provider: 'any',
      allowRememberBrowser: false
    };
  }
  callback(null, user, context);
}

Was this helpful?

Authenticate

Sample Use Cases - Rules with Passwordless Authentication

Require Multi-factor Authentication for users who are outside the corporate network