support.mozilla.org Open in urlscan Pro
34.149.128.2  Public Scan

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

Form analysis 7 forms found in the DOM

GET /en-US/search/

<form data-instant-search="form" id="support-search" action="/en-US/search/" method="get" class="simple-search-form">
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  <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>
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  <input type="hidden" name="referrer" value="https://detectportal.firefox.com/"><input type="hidden" name="query" value="">
</form>

POST /en-US/kb/captive-portal/vote

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  <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>
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    <option value="no">Norsk</option>
    <option value="pl">Polski</option>
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    <option value="pt-PT">Português (Europeu)</option>
    <option value="ro">română</option>
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    <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>
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    <option value="ta">தமிழ்</option>
    <option value="ta-LK">தமிழ் (இலங்கை)</option>
    <option value="te">తెలుగు</option>
    <option value="th">ไทย</option>
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    <option value="zu">isiZulu</option>
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  <!-- form submit button is shown when JavaScript is not enabled -->
  <button type="submit">Go</button>
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Text Content

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 1. Home
 2. Firefox
 3. Troubleshooting
 4. Unblock Firefox from...
 5. Captive portal detection

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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?

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These fine people helped write this article:

Michele Rodaro, Mozinet, Joni, Mark Heijl, Valentin, k_alex, BD, meleansgar03,
Dave Rose, Cyprian Ojide


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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
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