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<!doctype html><html lang=en-us><head><meta charset=utf-8><meta http-equiv=x-ua-compatible content="ie=edge"><meta name=viewport content="width=device-width,initial-scale=1,shrink-to-fit=no"><link rel=preload as=font href=/fonts/vendor/jost/jost-v4-latin-regular.woff2 type=font/woff2 crossorigin><link rel=preload as=font href=/fonts/vendor/jost/jost-v4-latin-700.woff2 type=font/woff2 crossorigin><link rel=stylesheet href=/main.f998e900ad1763639b2de999d219c60a588fb531888a0672d99b77aca3c151f84bdf80fcc8ca4046d0c23b9d5873eb2d32c59c17011fead4bedea7bc2b062d61.css integrity="sha512-+ZjpAK0XY2ObLemZ0hnGCliPtTGIigZy2Zt3rKPBUfhL34D8yMpARtDCO51Yc+stMsWcFwEf6tS+3qe8KwYtYQ==" crossorigin=anonymous><noscript><style>img.lazyload{display:none}</style></noscript><meta name=robots content="index, follow"><meta name=googlebot content="index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1"><meta name=bingbot content="index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1"><title>Configuring Difficulty Factor - mCaptcha</title><meta name=description content="mCaptcha has options to configure its proof of work engine behavior, this page explains how to determine difficulty facotrs that work best for your website!"><link rel=canonical href=/docs/webmasters/configuring-difficulty-factor/><meta name=twitter:card content="summary_large_image"><meta name=twitter:image content="/icon.png"><meta name=twitter:title content="Configuring Difficulty Factor"><meta name=twitter:description content="mCaptcha has options to configure its proof of work engine behavior, this page explains how to determine difficulty facotrs that work best for your website!"><meta name=twitter:site content="@"><meta name=twitter:creator content="@"><meta property="og:title" content="Configuring Difficulty Factor"><meta property="og:description" content="mCaptcha has options to configure its proof of work engine behavior, this page explains how to determine difficulty facotrs that work best for your website!"><meta property="og:type" content="article"><meta property="og:url" content="/docs/webmasters/configuring-difficulty-factor/"><meta property="og:image" content="/icon.png"><meta property="article:published_time" content="2022-06-22T00:00:00+00:00"><meta property="article:modified_time" content="2023-10-27T21:39:40+05:30"><meta property="og:site_name" content="mCaptcha"><meta property="article:publisher" content="https://www.facebook.com/"><meta property="article:author" content="https://www.facebook.com/"><meta property="og:locale" content="en_US"><script type=application/ld+json>{"@context":"http://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"\/"},{"@type":"ListItem","position":2,"name":"Docswebmastersconfiguring Difficulty Factor","item":"\/docswebmastersconfiguring-difficulty-factor\/"}]}</script><meta name=theme-color content="#fff"><link rel=apple-touch-icon sizes=180x180 href=/apple-touch-icon.png><link rel=icon type=image/png sizes=32x32 href=/favicon-32x32.png><link rel=icon type=image/png sizes=16x16 href=/favicon-16x16.png><link rel=manifest href=/site.webmanifest></head><body class="docs single"><div class="header-bar fixed-top"></div><header class="navbar fixed-top navbar-expand-md navbar-light"><div class=container><input class="menu-btn order-0" type=checkbox id=menu-btn>
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<span class=toggle-dark><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-moon"><path d="M21 12.79A9 9 0 1111.21 3 7 7 0 0021 12.79z"/></svg></span><span class=toggle-light><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-sun"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg></span></button><ul class="navbar-nav social-nav order-3 order-md-5"><li class=nav-item><a class=nav-link href=https://github.com/mCaptcha><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-github"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37.0 00-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44.0 0020 4.77 5.07 5.07.0 0019.91 1S18.73.65 16 2.48a13.38 13.38.0 00-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07.0 005 4.77 5.44 5.44.0 003.5 8.55c0 5.42 3.3 6.61 6.44 7A3.37 3.37.0 009 18.13V22"/></svg><span class="ms-2 visually-hidden">GitHub</span></a></li></ul><div class="collapse navbar-collapse order-4 order-md-1"><ul class="navbar-nav main-nav me-auto order-5 order-md-2"><li class=nav-item><a class=nav-link href=/blog/>Blog</a></li><li class=nav-item><a class=nav-link href=/community/>Community</a></li><li class=nav-item><a class=nav-link href=/contact/>Contact</a></li><li class=nav-item><a class=nav-link href=/about/>About</a></li><li class="nav-item active"><a class=nav-link href=/docs/webmasters/installing-captcha/>Docs</a></li></ul><div class="break order-6 d-md-none"></div><form class="navbar-form flex-grow-1 order-7 order-md-3"><input id=userinput class="form-control is-search" type=search placeholder="Search docs..." aria-label="Search docs..." autocomplete=off><div id=suggestions class="shadow bg-white rounded"></div></form></div></div></header><div class="wrap container" role=document><div class=content><div class="row flex-xl-nowrap"><div class="col-lg-5 col-xl-4 docs-sidebar"><nav class=docs-links aria-label="Main navigation"><h3>Webmasters</h3><ul class=list-unstyled><li><a class=docs-link href=/docs/webmasters/installing-captcha/>Installing mCaptcha on your website</a></li><li><a class="docs-link active" href=/docs/webmasters/configuring-difficulty-factor/>Configuring Difficulty Factor</a></li><li><a class=docs-link href=/docs/webmasters/terminology/>Terminology</a></li><li><a class=docs-link href=/docs/webmasters/faq/>Webmasters FAQ</a></li></ul><h3>User Manual</h3><ul class=list-unstyled><li><a class=docs-link href=/docs/user-manual/cli/>CLI tool</a></li><li><a class=docs-link href=/docs/user-manual/how-to-mcaptcha-without-js/>Use mCaptcha without JavaScript</a></li></ul><h3>Self-Hosting</h3><ul class=list-unstyled><li><a class=docs-link href=/docs/self-hosting/getting-started/>Getting started</a></li><li><a class=docs-link href=/docs/self-hosting/bare-metal/>Deploy bare metal</a></li><li><a class=docs-link href=/docs/self-hosting/ansible/>Using Ansible</a></li><li><a class=docs-link href=/docs/self-hosting/docker/>Using Docker</a></li></ul><h3>API</h3><ul class=list-unstyled><li><a class=docs-link href=/docs/api/browser/>Browser libraries</a></li><li><a class=docs-link href=/docs/api/mcaptcha-system/>mCaptcha System Library</a></li><li><a class=docs-link href=/docs/api/pow-sha256/>pow_sha256</a></li></ul><h3>Help</h3><ul class=list-unstyled><li><a class=docs-link href=/docs/help/troubleshooting/>Troubleshooting</a></li><li><a class=docs-link href=/docs/help/faq/>FAQ</a></li></ul></nav></div><nav class="docs-toc d-none d-xl-block col-xl-3" aria-label="Secondary navigation"><div class=page-links><h3>On this page</h3><nav id=TableOfContents><ul><li><ul><li><a href=#easy-option>Easy option</a></li><li><a href=#advance-option>Advance option</a></li></ul></li></ul></nav></div></nav><main class="docs-content col-lg-11 col-xl-9"><h1>Configuring Difficulty Factor</h1><p class=lead></p><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><p><strong>Lowest advisable difficulty factor is 5000.</strong></p><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><p>There are two modes to setting difficulty factor for your website on
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mCaptcha:</p><h3 id=easy-option>Easy option<a href=#easy-option class=anchor aria-hidden=true>#</a></h3><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><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><figure><img class="img-fluid lazyload blur-up" data-sizes=auto src=/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_20x0_resize_box_2.png data-srcset="/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_900x0_resize_box_2.png 900w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_800x0_resize_box_2.png 800w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_700x0_resize_box_2.png 700w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_600x0_resize_box_2.png 600w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_500x0_resize_box_2.png 500w" width=720 height=452 alt="new sitekey form in easy mode"><noscript><img class=img-fluid sizes=100vw srcset="/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_900x0_resize_box_2.png 900w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_800x0_resize_box_2.png 800w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_700x0_resize_box_2.png 700w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_600x0_resize_box_2.png 600w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode_hu3f66189ea53484ac6603a2d78fa015c8_26636_500x0_resize_box_2.png 500w" src=/docs/webmasters/configuring-difficulty-factor/new-sitekey-easy-mode.png width=720 height=452 alt="new sitekey form in easy mode"></noscript></figure><h3 id=advance-option>Advance option<a href=#advance-option class=anchor aria-hidden=true>#</a></h3><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><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><figure><img class="img-fluid lazyload blur-up" data-sizes=auto src=/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_20x0_resize_box_2.png data-srcset="/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_900x0_resize_box_2.png 900w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_800x0_resize_box_2.png 800w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_700x0_resize_box_2.png 700w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_600x0_resize_box_2.png 600w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_500x0_resize_box_2.png 500w" width=720 height=407 alt="new sitekey form in advance mode"><noscript><img class=img-fluid sizes=100vw srcset="/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_900x0_resize_box_2.png 900w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_800x0_resize_box_2.png 800w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_700x0_resize_box_2.png 700w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_600x0_resize_box_2.png 600w,/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode_huc4867c6295dc4be195d832a52b37239b_23312_500x0_resize_box_2.png 500w" src=/docs/webmasters/configuring-difficulty-factor/new-sitekey-adv-mode.png width=720 height=407 alt="new sitekey form in advance mode"></noscript></figure><p class=edit-page><a href=https://git.batsense.net/mCaptcha/website/blob/master/content/docs/webmasters/configuring-difficulty-factor/index.md><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-edit-2"><path d="M17 3a2.828 2.828.0 114 4L7.5 20.5 2 22l1.5-5.5L17 3z"/></svg>Edit this page on git.batsense.net</a></p><div class="docs-navigation d-flex justify-content-between"><a href=/docs/webmasters/installing-captcha/><div class="card my-1"><div class="card-body py-2">← Installing mCaptcha on your website</div></div></a><a class=ms-auto href=/docs/self-hosting/getting-started/><div class="card my-1"><div class="card-body py-2">Getting started →</div></div></a></div></main></div></div></div><footer class="footer text-muted"><div class=container><div class=row><div class="col-lg-8 order-last order-lg-first"><ul class=list-inline><li class=list-inline-item>Powered by <a href=https://gohugo.io/>Hugo</a>, and <a href=https://getdoks.org/>Doks</a></li></ul></div><div class="col-lg-8 order-first order-lg-last text-lg-end"><ul class=list-inline><li class=list-inline-item><a href=/about/>About</a></li><li class=list-inline-item><a href=/donate>Donate</a></li><li class=list-inline-item><a href=/privacy-policy/>Privacy</a></li><li class=list-inline-item><a href=/security>Security</a></li><li class=list-inline-item><a href=https://stats.uptimerobot.com/GK7VLFJnBl>Status</a></li><li class=list-inline-item><a href=/thanks>Thanks</a></li></ul></div></div></div></footer><script src=/main.min.993b2b4c58b07e7a4bb3423cf18ccd78a85d0063680c0fc9bf6d9cc02be98e08793034d984dd8f7c60ad5b70f3186cc8bc280b1077b7e37c2d64f36f118099bb.js integrity="sha512-mTsrTFiwfnpLs0I88YzNeKhdAGNoDA/Jv22cwCvpjgh5MDTZhN2PfGCtW3DzGGzIvCgLEHe343wtZPNvEYCZuw==" crossorigin=anonymous defer></script><script src=/index.min.54509ba7c5e639f5ec4ae9409f76e99f01de45aae0c450b398bb04083016dc4213a82a49528708fd7d36c22e60debacd894f3dbdc3a30fa796132f9a541ccdab.js integrity="sha512-VFCbp8XmOfXsSulAn3bpnwHeRargxFCzmLsECDAW3EITqCpJUocI/X02wi5g3rrNiU89vcOjD6eWEy+aVBzNqw==" crossorigin=anonymous defer></script></body></html> |