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<li><a class="docs-link active" href="/docs/introduction/configuring-difficulty-factor/">Configuring Difficulty Factor</a></li>
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<li><a class="docs-link" href="/docs/terminology/difficulty-factor/">Difficulty Factor</a></li>
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<h1>Configuring Difficulty Factor</h1>
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<p class="lead"></p>
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<p>mCaptcha is highly responsive to detecting DDoS attacks. Admins are
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advised to take advantage of it by setting low <a href="/docs/terminology/difficulty-factor/">difficulty
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factors</a> for normal traffic levels
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for their website.</p>
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<p><strong>Lowest advisable difficulty factor is 5000.</strong></p>
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<p>For instance, if it is normal for my website to get 2000 requests for
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every 30 seconds, I will set a <a href="/docs/terminology/cooldown-period">cool
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down</a> period of 30 seconds and the
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first level of difficulty configuration will have a <a href="/docs/terminology/visitor-threshold">visitor threshold</a> of 2000 with a
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difficulty factor of 5000.</p>
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<p>There are two modes to setting difficulty factor for your website on
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mCaptcha:</p>
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<h3 id="easy-option">Easy option<a href="#easy-option" class="anchor" aria-hidden="true">#</a> </h3>
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<p>Easy mode asks a few basic statistics about your website and generates a
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configuration that should work for your website. Currently, easy mode is
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guided by assumptions on suitable difficulty factors to protect a
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website but it will be fine-tuned as mCaptcha sees more deployment.</p>
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<p>Configuration generated by easy mode can be tweaked later using the
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advance mode, as you become more familiar with how mCaptcha works.</p>
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<figure>
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<img class="img-fluid lazyload blur-up" data-sizes="auto" src="/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_20x0_resize_box_3.png" data-srcset="/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_900x0_resize_box_3.png 900w,/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_800x0_resize_box_3.png 800w,/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_700x0_resize_box_3.png 700w,/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_600x0_resize_box_3.png 600w,/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_500x0_resize_box_3.png 500w" width="720" height="452" alt="new sitekey form in easy mode">
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<noscript><img class="img-fluid" sizes="100vw" srcset="/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_900x0_resize_box_3.png 900w,/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_800x0_resize_box_3.png 800w,/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_700x0_resize_box_3.png 700w,/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_600x0_resize_box_3.png 600w,/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_500x0_resize_box_3.png 500w" src="/docs/introduction/configuring-difficulty-factor/new-sitekey-easy-mode.png" width="720" height="452" alt="new sitekey form in easy mode"></noscript>
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</figure>
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<h3 id="advance-option">Advance option<a href="#advance-option" class="anchor" aria-hidden="true">#</a> </h3>
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<p>Advance mode gives the admin granular control over how mCaptcha behaves
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on their website. It has options to set the difficulty factor for each
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level of traffic(or visitor threshold, in mCaptcha speak), fully taking
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advantage of mCaptcha’s variable difficulty factor feature.</p>
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<p>For instance, if it is normal for a website to get 200 requests over 30
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seconds, then setting a very low difficulty factor for a visitor
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threshold of 200 and a cool down period of 30 seconds will allow the
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users to pass through without waiting on the CAPTCHA. But if 1000
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requests over 30 seconds will bring down the service, then the admin can
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configure increasing levels of difficulty factor of increasing traffic
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levels, effectively rate limiting its users and protecting the
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underlying website.</p>
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<figure>
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<img class="img-fluid lazyload blur-up" data-sizes="auto" src="/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_20x0_resize_box_3.png" data-srcset="/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_900x0_resize_box_3.png 900w,/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_800x0_resize_box_3.png 800w,/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_700x0_resize_box_3.png 700w,/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_600x0_resize_box_3.png 600w,/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_500x0_resize_box_3.png 500w" width="720" height="407" alt="new sitekey form in advance mode">
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<noscript><img class="img-fluid" sizes="100vw" srcset="/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_900x0_resize_box_3.png 900w,/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_800x0_resize_box_3.png 800w,/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_700x0_resize_box_3.png 700w,/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_600x0_resize_box_3.png 600w,/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_500x0_resize_box_3.png 500w" src="/docs/introduction/configuring-difficulty-factor/new-sitekey-adv-mode.png" width="720" height="407" alt="new sitekey form in advance mode"></noscript>
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</figure>
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