support.mozilla.org
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34.149.128.2
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Submitted URL: http://detectportal.firefox.com/canonical.html
Effective URL: https://support.mozilla.org/en-US/kb/captive-portal
Submission: On May 14 via api from US — Scanned from DE
Effective URL: https://support.mozilla.org/en-US/kb/captive-portal
Submission: On May 14 via api from US — Scanned from DE
Form analysis
7 forms found in the DOMGET /en-US/search/
<form data-instant-search="form" id="support-search" action="/en-US/search/" method="get" class="simple-search-form">
<input type="hidden" name="product" value="firefox">
<input spellcheck="true" type="search" autocomplete="off" name="q" aria-required="true" placeholder="Find help..." class="searchbox" id="search-q">
<button type="submit" title="Search" class="search-button">Search</button>
</form>
GET /en-US/search/
<form data-instant-search="form" id="mobile-search-results" action="/en-US/search/" method="get" class="simple-search-form">
<input type="hidden" name="product" value="firefox">
<input spellcheck="true" type="search" autocomplete="off" name="q" aria-required="true" placeholder="Find help..." class="searchbox" id="search-q">
<button type="submit" title="Search" class="search-button">Search</button>
</form>
GET /en-US/search/
<form data-instant-search="form" id="hidden-search" action="/en-US/search/" method="get" class="simple-search-form">
<input type="hidden" name="product" value="firefox">
<input spellcheck="true" type="search" autocomplete="off" name="q" aria-required="true" placeholder="Find help..." class="searchbox" id="search-q">
<button type="submit" title="Search" class="search-button">Search</button>
</form>
GET /en-US/search/
<form data-instant-search="form" id="support-search-sidebar" action="/en-US/search/" method="get" class="simple-search-form">
<input type="hidden" name="product" value="firefox">
<input spellcheck="true" type="search" autocomplete="off" name="q" aria-required="true" placeholder="Find help..." class="searchbox" id="search-q">
<button type="submit" title="Search" class="search-button">Search</button>
</form>
POST /en-US/kb/captive-portal/vote
<form class="document-vote--form helpful" action="/en-US/kb/captive-portal/vote" method="post">
<input type="hidden" name="csrfmiddlewaretoken" value="kkb1xPdF231cXyVTOoeU9ZUFkxvVo7hLNBqM0aJ6fYufrhrPqrMIDZCi6afFn6mM">
<h4 class="document-vote--heading">Was this article helpful?</h4>
<div class="document-vote--buttons">
<input type="hidden" name="revision_id" value="274419">
<input type="hidden" name="source" value="footer">
<button type="submit" class="btn helpful-button" name="helpful"><span class="hidden-text">Yes</span>👍</button>
<button type="submit" class="btn not-helpful-button" name="not-helpful"><span class="hidden-text">No</span>👎</button>
<img class="wait" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/spinner.18d6c26adc937688.gif" alt="Please wait...">
</div>
<input type="hidden" name="referrer" value="https://detectportal.firefox.com/"><input type="hidden" name="query" value="">
</form>
POST /en-US/kb/captive-portal/vote
<form class="document-vote--form helpful" action="/en-US/kb/captive-portal/vote" method="post">
<input type="hidden" name="csrfmiddlewaretoken" value="kkb1xPdF231cXyVTOoeU9ZUFkxvVo7hLNBqM0aJ6fYufrhrPqrMIDZCi6afFn6mM">
<h4 class="document-vote--heading">Was this article helpful?</h4>
<div class="document-vote--buttons">
<input type="hidden" name="revision_id" value="274419">
<input type="hidden" name="source" value="footer">
<button type="submit" class="btn helpful-button" name="helpful"><span class="hidden-text">Yes</span>👍</button>
<button type="submit" class="btn not-helpful-button" name="not-helpful"><span class="hidden-text">No</span>👎</button>
<img class="wait" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/spinner.18d6c26adc937688.gif" alt="Please wait...">
</div>
<input type="hidden" name="referrer" value="https://detectportal.firefox.com/"><input type="hidden" name="query" value="">
</form>
GET #
<form class="mzp-c-language-switcher" method="get" action="#">
<a class="mzp-c-language-switcher-link" href="https://www.mozilla.org/locales/">Language</a>
<label for="mzp-c-language-switcher-select">Language</label>
<select id="mzp-c-language-switcher-select" class="mzp-js-language-switcher-select" name="lang" data-previous-language="en-US">
<option value="af">Afrikaans</option>
<option value="ar">عربي</option>
<option value="az">Azərbaycanca</option>
<option value="bg">Български</option>
<option value="bm">Bamanankan</option>
<option value="bn">বাংলা</option>
<option value="bs">Bosanski</option>
<option value="ca">català</option>
<option value="cs">Čeština</option>
<option value="da">Dansk</option>
<option value="de">Deutsch</option>
<option value="ee">Èʋegbe</option>
<option value="el">Ελληνικά</option>
<option value="en-US" selected="">English</option>
<option value="es">Español</option>
<option value="et">eesti keel</option>
<option value="eu">Euskara</option>
<option value="fa">فارسی</option>
<option value="fi">suomi</option>
<option value="fr">Français</option>
<option value="fy-NL">Frysk</option>
<option value="ga-IE">Gaeilge (Éire)</option>
<option value="gl">Galego</option>
<option value="gn">Avañe'ẽ</option>
<option value="gu-IN">ગુજરાતી</option>
<option value="ha">هَرْشَن هَوْسَ</option>
<option value="he">עברית</option>
<option value="hi-IN">हिन्दी (भारत)</option>
<option value="hr">Hrvatski</option>
<option value="hu">Magyar</option>
<option value="dsb">Dolnoserbšćina</option>
<option value="hsb">Hornjoserbsce</option>
<option value="id">Bahasa Indonesia</option>
<option value="ig">Asụsụ Igbo</option>
<option value="it">Italiano</option>
<option value="ja">日本語</option>
<option value="ka">ქართული</option>
<option value="km">ខ្មែរ</option>
<option value="kn">ಕನ್ನಡ</option>
<option value="ko">한국어</option>
<option value="ln">Lingála</option>
<option value="lt">lietuvių kalba</option>
<option value="mg">Malagasy</option>
<option value="mk">Македонски</option>
<option value="ml">മലയാളം</option>
<option value="ms">Bahasa Melayu</option>
<option value="ne-NP">नेपाली</option>
<option value="nl">Nederlands</option>
<option value="no">Norsk</option>
<option value="pl">Polski</option>
<option value="pt-BR">Português (do Brasil)</option>
<option value="pt-PT">Português (Europeu)</option>
<option value="ro">română</option>
<option value="ru">Русский</option>
<option value="si">සිංහල</option>
<option value="sk">slovenčina</option>
<option value="sl">slovenščina</option>
<option value="sq">Shqip</option>
<option value="sr">Српски</option>
<option value="sw">Kiswahili</option>
<option value="sv">Svenska</option>
<option value="ta">தமிழ்</option>
<option value="ta-LK">தமிழ் (இலங்கை)</option>
<option value="te">తెలుగు</option>
<option value="th">ไทย</option>
<option value="tn">Setswana</option>
<option value="tr">Türkçe</option>
<option value="uk">Українська</option>
<option value="ur">اُردو</option>
<option value="vi">Tiếng Việt</option>
<option value="wo">Wolof</option>
<option value="xh">isiXhosa</option>
<option value="yo">èdè Yorùbá</option>
<option value="zh-CN">中文 (简体)</option>
<option value="zh-TW">正體中文 (繁體)</option>
<option value="zu">isiZulu</option>
</select>
<!-- form submit button is shown when JavaScript is not enabled -->
<button type="submit">Go</button>
</form>
Text Content
* Skip to main content * Switch language * Skip to search Search Menu * Get Help Close Firefox menu ASK A QUESTION Get support from our contributors or staff members. * Firefox Browser * Mozilla VPN * Firefox for iOS * Firefox Focus * Firefox for Android * Browse All Products EXPLORE OUR HELP ARTICLES Dig into the knowledge base, tips and tricks, troubleshooting, and so much more. * Firefox Browser * Mozilla VPN * Firefox for iOS * Firefox Focus * Firefox for Android * Browse All Articles MOZILLA ACCOUNT Find help for common issues and learn about the benefits a Mozilla account provides. * What Is It? * Get Help * Reset Password * * Sync Your Data * Contribute * Search * Sign In/Up Search SEARCH SUPPORT Search 1. Home 2. Firefox 3. Troubleshooting 4. Unblock Firefox from... 5. Captive portal detection Search * * CUSTOMIZE THIS ARTICLE Firefox Version 128 Version 127 Version 126 Version 125 Version 124 Version 123 Version 122 Version 121 Version 120 Version 119 Version 118 Version 117 Version 116 Version 115 Windows 8 Windows 7/Vista Windows XP Mac Linux Windows 10 Windows 11 WAS THIS ARTICLE HELPFUL? Yes👍 No👎 Download Firefox * Systems and Languages * What's New * Privacy Give Firefox a tune up Refresh Firefox * How does it work? * Download a fresh copy CAPTIVE PORTAL DETECTION CAPTIVE PORTAL CHECKS Firefox's captive portal detector tests whether the network connection requires you to log in or accept the network's terms before permitting you to use the network. This is most often the case when using a public Wi-Fi hotspot, but it can also be a corporate guest network that prompts you to agree to its acceptable use policy. Firefox tests if the connection is a captive portal by regularly connecting to http://detectportal.firefox.com/canonical.html. Firefox will also make connections to this URL to check if your current network supports certain technologies such as IPv6. WHAT TO DO AFTER THE CAPTIVE PORTAL CHECK If the page was left open by Firefox, you may simply close it. If this happens frequently please file a Networking bug and describe your case (requires creating a Bugzilla account). HOW CAPTIVE PORTALS WORK Most captive portals redirect you to a login page or a page where you must agree to an Acceptable Use Policy - AUP. Firefox will make automatic connections to detect these redirects and will notify you by indicating that you may need to log into the network. After doing this, the tab should be closed automatically by Firefox. Occasionally, it will be kept around to display a message from the network's owners. Share this article: https://mzl.la/3vWY4y1 WAS THIS ARTICLE HELPFUL? Yes👍 No👎 These fine people helped write this article: Michele Rodaro, Mozinet, Joni, Mark Heijl, Valentin, k_alex, BD, meleansgar03, Dave Rose, Cyprian Ojide VOLUNTEER Grow and share your expertise with others. Answer questions and improve our knowledge base. Learn More RELATED ARTICLES HOW TO STOP FIREFOX FROM MAKING AUTOMATIC CONNECTIONS Some people are concerned about the connections Firefox makes to the Internet, especially when those connections are made for no apparent reason... MOZILLA * Report Trademark Abuse * Source code * Twitter * Join our Community * Explore Help Articles FIREFOX * Download * Firefox Desktop * Android Browser * iOS Browser * Focus Browser FIREFOX FOR DEVELOPERS * Developer Edition * Beta * Beta for Android * Nightly * Nightly for Android MOZILLA ACCOUNT * Sign In/Up * What Is It? * Reset Password * Sync Your Data * Get Help Language Language Afrikaans عربي Azərbaycanca Български Bamanankan বাংলা Bosanski català Čeština Dansk Deutsch Èʋegbe Ελληνικά English Español eesti keel Euskara فارسی suomi Français Frysk Gaeilge (Éire) Galego Avañe'ẽ ગુજરાતી هَرْشَن هَوْسَ עברית हिन्दी (भारत) Hrvatski Magyar Dolnoserbšćina Hornjoserbsce Bahasa Indonesia Asụsụ Igbo Italiano 日本語 ქართული ខ្មែរ ಕನ್ನಡ 한국어 Lingála lietuvių kalba Malagasy Македонски മലയാളം Bahasa Melayu नेपाली Nederlands Norsk Polski Português (do Brasil) Português (Europeu) română Русский සිංහල slovenčina slovenščina Shqip Српски Kiswahili Svenska தமிழ் தமிழ் (இலங்கை) తెలుగు ไทย Setswana Türkçe Українська اُردو Tiếng Việt Wolof isiXhosa èdè Yorùbá 中文 (简体) 正體中文 (繁體) isiZulu Go * Twitter(@firefox) * YouTube (firefoxchannel) * Instagram (firefox) Mozilla * mozilla.org * Terms of Service * Privacy * Cookies * Contact Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation. Portions of this content are ©1998–2024 by individual mozilla.org contributors. Content available under a Creative Commons license.