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href="/docs/category/guides/"><span itemprop="name">Guides</span></a><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/docs/category/self-hosting/"><span itemprop="name">Self Hosting</span></a><meta itemprop="position" content="2"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/docs/category/oauth/"><span itemprop="name">OAuth</span></a><meta itemprop="position" content="3"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">OAuth Public Frontend Configuration</span><meta itemprop="position" content="4"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>OAuth Public Frontend Configuration</h1>
<p>As of <code>v0.4.7</code>, <code>zrok</code> includes OAuth integration for both Google and GitHub for <code>zrok access public</code> public frontends.</p>
<p>This integration allows you to create public shares and request that the public frontend authenticate your users against either the Google or GitHub OAuth endpoints (using the user&#x27;s Google or GitHub accounts). Additionally, you can restrict the email address domain associated with the count to a list of domains that you provide when you create the share.</p>
<p>This is a first step towards a more comprehensive portfolio of user authentication strategies in future <code>zrok</code> releases.</p>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="planning-for-the-oauth-frontend">Planning for the OAuth Frontend<a href="#planning-for-the-oauth-frontend" class="hash-link" aria-label="Direct link to Planning for the OAuth Frontend" title="Direct link to Planning for the OAuth Frontend"></a></h2>
<p>The current implementation of the OAuth public frontend uses a HTTP listener to handle redirects from OAuth providers. You&#x27;ll need to configure a DNS name and a port for this listener that is accessible by your end users. We&#x27;ll refer to this listener as the &quot;OAuth frontend&quot; in this guide.</p>
<p>We&#x27;ll use the public DNS address of the OAuth frontend when creating the Google and GitHub OAuth clients below. This address is typically configured into these clients as the &quot;redirect URL&quot; where these clients will send the authenticated users after authentication.</p>
<p>The <code>zrok</code> OAuth frontend will capture the successful authentication and forward the user back to their original destination.</p>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="configuring-a-google-oauth-client-id">Configuring a Google OAuth Client ID<a href="#configuring-a-google-oauth-client-id" class="hash-link" aria-label="Direct link to Configuring a Google OAuth Client ID" title="Direct link to Configuring a Google OAuth Client ID"></a></h2>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="oauth-content-screen">OAuth Content Screen<a href="#oauth-content-screen" class="hash-link" aria-label="Direct link to OAuth Content Screen" title="Direct link to OAuth Content Screen"></a></h3>
<p>Before you can configure an OAuth Client ID in Google Cloud, you have to configure the &quot;OAuth content screen&quot;.</p>
<p>In the Google Cloud console, navigate to: <code>APIs &amp; Services &gt; Credentials &gt; OAuth content screen</code></p>
<p><img decoding="async" loading="lazy" src="/assets/images/google_oauth_content_screen_2-b94a6456ce9b13e053b4c07d8f233e84.png" width="1469" height="1141" class="img_ev3q"></p>
<p>Here you can give your <code>zrok</code> public frontend an identity and branding to match your deployment.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/google_oauth_content_screen_3-edf62ea2b291b58093289d31c2dae58d.png" width="1469" height="1141" class="img_ev3q"></p>
<p>Describe what domains are authorized to access your public frontend and establish contact information.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/google_oauth_content_screen_4-4bc7e07b06c8a9a3c1e8f766f6f1c5a6.png" width="1469" height="1179" class="img_ev3q"></p>
<p>Add a non-sensitive scope for <code>../auth/userinfo.email</code>. This is important as it allows the <code>zrok</code> OAuth frontend to receive the email address of the authenticated user.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/google_oauth_content_screen_5-7c375cf49d8e2e392ca12b584462ab59.png" width="1469" height="1179" class="img_ev3q"></p>
<p><img decoding="async" loading="lazy" src="/assets/images/google_oauth_content_screen_6-9b0fe216a782ef378313650e99ea52a1.png" width="1469" height="1179" class="img_ev3q"></p>
<p>Now your OAuth content screen is configured.</p>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-the-oauth-20-client-id">Create the OAuth 2.0 Client ID<a href="#create-the-oauth-20-client-id" class="hash-link" aria-label="Direct link to Create the OAuth 2.0 Client ID" title="Direct link to Create the OAuth 2.0 Client ID"></a></h3>
<p>Next we create the OAuth Client ID for your public frontend.</p>
<p>In the Google Cloud Console, navigate to: <code>APIs &amp; Services &gt; Credentials &gt; + Create Credentials</code></p>
<p><img decoding="async" loading="lazy" src="/assets/images/google_create_credentials_1-e61ee7e8fa51bdc93feab84235a90673.png" width="1469" height="1179" class="img_ev3q"></p>
<p>Select <code>OAuth client ID</code> from the <code>+ Create Credentials</code> dropdown.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/google_create_credentials_2-60cf4edb52f453d605907c17400e0800.png" width="1469" height="1179" class="img_ev3q"></p>
<p>Application type is <code>Web Application</code>.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/google_create_credentials_3-1b3db3f9057d8626d64c5466dbb05ec7.png" width="1469" height="1179" class="img_ev3q"></p>
<p>The most important bit here is the &quot;Authorized redirect URIs&quot;. You&#x27;re going to want to put a URL here that matches the <code>zrok</code> OAuth frontend address that you configured at the start of this guide, but at the end of the URL you&#x27;re going to append <code>/google/oauth</code> to the URL.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/google_create_credentials_4-f720031df1d09f997a18842745e9ea0d.png" width="1469" height="1179" class="img_ev3q"></p>
<p>Save the client ID and the client secret. You&#x27;ll configure these into your <code>frontend.yml</code>.</p>
<p>With this your Google OAuth client should be configured and ready.</p>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="configuring-a-github-client-id">Configuring a GitHub Client ID<a href="#configuring-a-github-client-id" class="hash-link" aria-label="Direct link to Configuring a GitHub Client ID" title="Direct link to Configuring a GitHub Client ID"></a></h2>
<p>Register a new OAuth application through the GitHub settings for the account that owns the application.</p>
<p>Navigate to:<code>Settings &gt; Developer Settings &gt; OAuth Apps &gt; Register a new application</code></p>
<p><img decoding="async" loading="lazy" src="/assets/images/github_create_oauth_application_1-dbb289a694d0c99b50cb949654d818f8.png" width="1469" height="1179" class="img_ev3q"></p>
<p><img decoding="async" loading="lazy" src="/assets/images/github_create_oauth_application_2-bc9d4c3f25853d608870eb220d00e5ee.png" width="1469" height="1179" class="img_ev3q"></p>
<p>The &quot;Authorized callback URL&quot; should be configured to match the OAuth frontend address you configured at the start of this guide, with <code>/github/oauth</code> appended to the end.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/github_create_oauth_application_3-7973d63cd117eaba72fbaeb4ff119a39.png" width="1469" height="1179" class="img_ev3q"></p>
<p>Create a new client secret.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/github_create_oauth_application_4-6fed398013c9e6c3a31e5721adac4a4c.png" width="1469" height="1179" class="img_ev3q"></p>
<p>Save the client ID and the client secret. You&#x27;ll configure these into your <code>frontend.yml</code>.</p>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="configuring-your-public-frontend">Configuring your Public Frontend<a href="#configuring-your-public-frontend" class="hash-link" aria-label="Direct link to Configuring your Public Frontend" title="Direct link to Configuring your Public Frontend"></a></h2>
<p>The public frontend configuration includes a new <code>oauth</code> section:</p>
<div class="language-yaml codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-yaml codeBlock_bY9V thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key atrule">oauth</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token key atrule">bind_address</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> 0.0.0.0</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token number">8181</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token key atrule">redirect_url</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> https</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain">//oauth.zrok.io</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token key atrule">cookie_domain</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> zrok.io</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token key atrule">hash_key</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&quot;the quick brown fox jumped over the lazy dog&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token key atrule">providers</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain"> </span><span class="token key atrule">name</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> google</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token key atrule">client_id</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&quot;&lt;client id from google&gt;&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token key atrule">client_secret</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&quot;&lt;client secret from google&gt;&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain"> </span><span class="token key atrule">name</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> github</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token key atrule">client_id</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&quot;&lt;client id from github&gt;&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token key atrule">client_secret</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&quot;&lt;client secret from github&gt;&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
<p>The <code>bind_address</code> parameter determines where the OAuth frontend will bind. Should be in <code>ip:port</code> format.</p>
<p>The <code>redirect_url</code> parameter determines the base URL where OAuth frontend requests will be redirected.</p>
<p><code>cookie_domain</code> is the domain where authentication cookies should be stored.</p>
<p><code>hash_key</code> is a unique string for your installation that is used to secure the authentication payloads for your public frontend.</p>
<p><code>providers</code> is a list of configured providers for this public frontend. The current implementation supports <code>google</code> and <code>github</code> as options.</p>
<p>Both the <code>google</code> and <code>github</code> providers accept a <code>client_id</code> and <code>client_secret</code> parameter. These values are provided when you configure the OAuth clients at Google or GitHub.</p>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="enabling-oauth-on-a-public-share">Enabling OAuth on a Public Share<a href="#enabling-oauth-on-a-public-share" class="hash-link" aria-label="Direct link to Enabling OAuth on a Public Share" title="Direct link to Enabling OAuth on a Public Share"></a></h2>
<p>With your public frontend configured to support OAuth, you can test this by creating a public share. There are new command line options to support this:</p>
<div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">$ zrok share public --help</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Share a target resource publicly</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Usage:</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> zrok share public &lt;target&gt; [flags]</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Flags:</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -b, --backend-mode string The backend mode {proxy, web, caddy, drive} (default &quot;proxy&quot;)</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --basic-auth stringArray Basic authentication users (&lt;username:password&gt;,...)</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --frontends stringArray Selected frontends to use for the share (default [public])</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --headless Disable TUI and run headless</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -h, --help help for public</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --insecure Enable insecure TLS certificate validation for &lt;target&gt;</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --oauth-check-interval duration Maximum lifetime for OAuth authentication; reauthenticate after expiry (default 3h0m0s)</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --oauth-email-address-patterns stringArray Allow only these email domain globs to authenticate via OAuth</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --oauth-provider string Enable OAuth provider [google, github]</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Global Flags:</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -p, --panic Panic instead of showing pretty errors</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -v, --verbose Enable verbose logging</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
<p>The <code>--oauth-provider</code> flag enables OAuth for the share using the specified provider.</p>
<p>The <code>--oauth-email-address-patterns</code> flag accepts a single glob pattern that matches an authenticated email address that is allowed to access the share. Use this flag multiple times to allow different patterns.</p>
<p>The <code>--oauth-check-interval</code> flag specifies how frequently the authentication must be checked.</p>
<p>An example public share:</p>
<div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">zrok share public --backend-mode web --oauth-provider github --oauth-email-address-patterns &#x27;*@zrok.io&#x27; ~/public</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="row margin-top--sm theme-doc-footer-edit-meta-row"><div class="col"><a href="https://github.com/openziti/zrok/blob/main/docs/../docs/guides/self-hosting/oauth/configuring-oauth.md" target="_blank" rel="noopener noreferrer" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_JAkA"></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/docs/category/oauth/"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">OAuth</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/docs/guides/self-hosting/instance-configuration/"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Instance Config</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#planning-for-the-oauth-frontend" class="table-of-contents__link toc-highlight">Planning for the OAuth Frontend</a></li><li><a href="#configuring-a-google-oauth-client-id" class="table-of-contents__link toc-highlight">Configuring a Google OAuth Client ID</a><ul><li><a href="#oauth-content-screen" class="table-of-contents__link toc-highlight">OAuth Content Screen</a></li><li><a href="#create-the-oauth-20-client-id" class="table-of-contents__link toc-highlight">Create the OAuth 2.0 Client ID</a></li></ul></li><li><a href="#configuring-a-github-client-id" class="table-of-contents__link toc-highlight">Configuring a GitHub Client ID</a></li><li><a href="#configuring-your-public-frontend" class="table-of-contents__link toc-highlight">Configuring your Public Frontend</a></li><li><a href="#enabling-oauth-on-a-public-share" class="table-of-contents__link toc-highlight">Enabling OAuth on a Public Share</a></li></ul></div></div></div></div></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2024 NetFoundry Inc. Built with Docusaurus.</div></div></div></footer></div>
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