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<nav class="navbar navbar--fixed-top"><div class="navbar__inner"><div class="navbar__items"><div aria-label="Navigation bar toggle" class="navbar__toggle" role="button" tabindex="0"><svg xmlns="http://www.w3.org/2000/svg" width="30" height="30" viewBox="0 0 30 30" role="img" focusable="false"><title>Menu</title><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"></path></svg></div><a class="navbar__brand" href="/oauth2-proxy/"><img class="navbar__logo" src="/oauth2-proxy/img/logos/OAuth2_Proxy_icon.svg" alt="OAuth2 Proxy"><strong class="navbar__title">OAuth2 Proxy</strong></a><a aria-current="page" class="navbar__item navbar__link navbar__link--active" href="/oauth2-proxy/docs/">Docs</a></div><div class="navbar__items navbar__items--right"><div class="navbar__item dropdown dropdown--hoverable dropdown--right"><a class="navbar__item navbar__link" href="/oauth2-proxy/docs/">7.2.x</a><ul class="dropdown__menu"><li><a 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aria-current="page" class="menu__link menu__link--active active" tabindex="0" href="/oauth2-proxy/docs/configuration/session_storage">Session Storage</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/oauth2-proxy/docs/configuration/tls">TLS Configuration</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/oauth2-proxy/docs/configuration/alpha-config">Alpha Configuration</a></li></ul></li><li class="menu__list-item"><a class="menu__link menu__link--sublist" href="#!">Features</a><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/oauth2-proxy/docs/features/endpoints">Endpoints</a></li></ul></li><li class="menu__list-item"><a class="menu__link menu__link--sublist" href="#!">Community</a><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/oauth2-proxy/docs/community/security">Security</a></li></ul></li></ul></div></div></div><main class="docMainContainer_3EyW"><div class="container padding-vert--lg docItemWrapper_1EkI"><div class="row"><div class="col docItemCol_2ASc"><div class="docItemContainer_3QWW"><article><div><span class="badge badge--secondary">Version: 7.2.x</span></div><header><h1 class="docTitle_1Lrw">Session Storage</h1></header><div class="markdown"><p>Sessions allow a user's authentication to be tracked between multiple HTTP
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requests to a service.</p><p>The OAuth2 Proxy uses a Cookie to track user sessions and will store the session
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data in one of the available session storage backends.</p><p>At present the available backends are (as passed to <code>--session-store-type</code>):</p><ul><li><a href="#cookie-storage">cookie</a> (default)</li><li><a href="#redis-storage">redis</a></li></ul><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_2cZh" id="cookie-storage"></a>Cookie Storage<a aria-hidden="true" tabindex="-1" class="hash-link" href="#cookie-storage" title="Direct link to heading">#</a></h3><p>The Cookie storage backend is the default backend implementation and has
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been used in the OAuth2 Proxy historically.</p><p>With the Cookie storage backend, all session information is stored in client
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side cookies and transferred with each and every request.</p><p>The following should be known when using this implementation:</p><ul><li>Since all state is stored client side, this storage backend means that the OAuth2 Proxy is completely stateless</li><li>Cookies are signed server side to prevent modification client-side</li><li>It is mandatory to set a <code>cookie-secret</code> which will ensure data is encrypted within the cookie data.</li><li>Since multiple requests can be made concurrently to the OAuth2 Proxy, this session implementation
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cannot lock sessions and while updating and refreshing sessions, there can be conflicts which force
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users to re-authenticate</li></ul><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_2cZh" id="redis-storage"></a>Redis Storage<a aria-hidden="true" tabindex="-1" class="hash-link" href="#redis-storage" title="Direct link to heading">#</a></h3><p>The Redis Storage backend stores sessions, encrypted, in redis. Instead sending all the information
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back the client for storage, as in the <a href="#cookie-storage">Cookie storage</a>, a ticket is sent back
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to the user as the cookie value instead.</p><p>A ticket is composed as the following:</p><p><code>{CookieName}-{ticketID}.{secret}</code></p><p>Where:</p><ul><li>The <code>CookieName</code> is the OAuth2 cookie name (_oauth2_proxy by default)</li><li>The <code>ticketID</code> is a 128 bit random number, hex-encoded</li><li>The <code>secret</code> is a 128 bit random number, base64url encoded (no padding). The secret is unique for every session.</li><li>The pair of <code>{CookieName}-{ticketID}</code> comprises a ticket handle, and thus, the redis key
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to which the session is stored. The encoded session is encrypted with the secret and stored
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in redis via the <code>SETEX</code> command.</li></ul><p>Encrypting every session uniquely protects the refresh/access/id tokens stored in the session from
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disclosure.</p><h4><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_2cZh" id="usage"></a>Usage<a aria-hidden="true" tabindex="-1" class="hash-link" href="#usage" title="Direct link to heading">#</a></h4><p>When using the redis store, specify <code>--session-store-type=redis</code> as well as the Redis connection URL, via
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<code>--redis-connection-url=redis://host[:port][/db-number]</code>.</p><p>You may also configure the store for Redis Sentinel. In this case, you will want to use the
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<code>--redis-use-sentinel=true</code> flag, as well as configure the flags <code>--redis-sentinel-master-name</code>
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and <code>--redis-sentinel-connection-urls</code> appropriately.</p><p>Redis Cluster is available to be the backend store as well. To leverage it, you will need to set the
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<code>--redis-use-cluster=true</code> flag, and configure the flags <code>--redis-cluster-connection-urls</code> appropriately.</p><p>Note that flags <code>--redis-use-sentinel=true</code> and <code>--redis-use-cluster=true</code> are mutually exclusive.</p></div></article><div class="margin-vert--xl"><div class="row"><div class="col"><a href="https://github.com/oauth2-proxy/oauth2-proxy/edit/master/docs/versioned_docs/version-7.2.x/configuration/sessions.md" target="_blank" rel="noreferrer noopener"><svg fill="currentColor" height="1.2em" width="1.2em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 40 40" style="margin-right:0.3em;vertical-align:sub"><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></div><div class="margin-vert--lg"><nav class="pagination-nav" aria-label="Blog list page navigation"><div class="pagination-nav__item"><a class="pagination-nav__link" href="/oauth2-proxy/docs/configuration/oauth_provider"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">« OAuth Provider Configuration</div></a></div><div class="pagination-nav__item pagination-nav__item--next"><a class="pagination-nav__link" href="/oauth2-proxy/docs/configuration/tls"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">TLS Configuration »</div></a></div></nav></div></div></div><div class="col col--3"><div class="tableOfContents_3SO_"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#cookie-storage" class="table-of-contents__link">Cookie Storage</a></li><li><a href="#redis-storage" class="table-of-contents__link">Redis Storage</a></li></ul></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container"><div class="text--center"><div>Copyright © 2022 OAuth2 Proxy.</div></div></div></footer></div>
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