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    <p>HTTP_REFERER - sent by the browser, stating the last page the browser viewed!</p> <p>If you trusting [HTTP_REFERER] for any reason that is important, you should not, since it can be faked easily:</p> <ol> <li>Some browsers limit access to not allow HTTP_REFERER to be passed</li> <li>Type a address in the address bar will not pass the HTTP_REFERER</li> <li>open a new browser window will not pass the HTTP_REFERER, because HTTP_REFERER = NULL</li> <li>has some browser addon that blocks it for privacy reasons. Some firewalls and AVs do to.</li> </ol> <p>Try this firefox extension, you'll be able to set any headers you want:</p> <p>@Master of Celebration:</p> <p><strong>Firefox:</strong> </p> <p><em>extensions:</em> <a href="https://addons.mozilla.org/en-US/firefox/addon/refspoof/" rel="noreferrer">refspoof</a>, <a href="https://addons.mozilla.org/en-US/firefox/addon/refcontrol/" rel="noreferrer">refontrol</a>, <a href="https://addons.mozilla.org/en-US/firefox/addon/modify-headers/" rel="noreferrer">modify headers</a>, <a href="https://addons.mozilla.org/en-US/firefox/addon/no-referer/" rel="noreferrer">no-referer</a></p> <p><em>Completely disable:</em> the option is available in about:config under "network.http.sendRefererHeader" and you want to set this to 0 to disable referer passing.</p> <p><strong>Google chrome / Chromium:</strong></p> <p><em>extensions:</em> <a href="https://chrome.google.com/webstore/detail/dkpkjedlegmelkogpgamcaemgbanohip" rel="noreferrer">noref</a>, <a href="https://chrome.google.com/webstore/detail/kkcdhmhggbdgjiehnfkdklfegjlhjfmh" rel="noreferrer">spoofy</a>, <a href="https://chrome.google.com/webstore/detail/lobgjaciknombeehlellklmbakbphhll" rel="noreferrer">external noreferrer</a></p> <p><em>Completely disable:</em> Chnage ~/.config/google-chrome/Default/Preferences or ~/.config/chromium/Default/Preferences and set this:</p> <pre><code>{ ... "enable_referrers": false, ... } </code></pre> <p><em>Or simply add --no-referrers to shortcut or in cli:</em></p> <pre><code>google-chrome --no-referrers </code></pre> <p><strong>Opera:</strong></p> <p><em>Completely disable:</em> Settings > Preferences > Advanced > Network, and uncheck "Send referrer information"</p> <p><strong>Spoofing web service:</strong></p> <p><a href="http://referer.us/" rel="noreferrer">http://referer.us/</a></p> <p><strong>Standalone filtering proxy (spoof any header):</strong></p> <p><a href="http://www.privoxy.org/" rel="noreferrer">Privoxy</a></p> <p><strong>Spoofing http_referer when using wget</strong></p> <p>‘--referer=url’</p> <p><strong>Spoofing http_referer when using curl</strong></p> <p>-e, --referer </p> <p><strong>Spoofing http_referer wth telnet</strong></p> <pre><code>telnet www.yoursite.com 80 (press return) GET /index.html HTTP/1.0 (press return) Referer: http://www.hah-hah.com (press return) (press return again) </code></pre>
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