If you want to restrict access to your knowledge base, you can use it behind a Login Wall. If users are not logged in, they will be redirected to a login screen.

Internal Knowledge Bases

To make sure only connected users access your knowledge base:

• Click on your Profile Picture > Settings
• Access the Security Settings section
• Turn on the Using my knowledge base internally only option

When this option is enabled, all content will be created as Internal by default and you can also apply stricter rules by setting them to Private. For more information on Accessibility Rules, please check this article.

It is worth mentioned that your Login page can be customized in the Customize Area  

If you need any help customizing the look & feel of the Login page, you can submit a customization request and our development team will be more than happy to help!

Embedded Knowledge Bases

You also have the option to embed your knowledge base into your own website, where you have control over the user authentication and can leverage from an existing user base, but keep in mind that Helpjuice also supports several authentication methods that can leverage from an existing user base.

To go with this approach, you have to set your content as Public (the option Use your knowledge base internally only? needs to be toggled off), otherwise Helpjuice will keep showing the Sign In page to your users.

Go to Settings > Security Settings and toggle on the Accessibly only via Javascript option. This will ensure that nobody can access your knowledge base directly under yoursubdomain.helpjuice.com (Helpjuice will still allow authenticated users to see it though).

Then please check this article to learn how to embed your Knowledge Base into your website.