49 lines
2 KiB
Markdown
49 lines
2 KiB
Markdown
---
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stage: Ecosystem
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group: Integrations
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# reCAPTCHA **(FREE SELF)**
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GitLab leverages [Google's reCAPTCHA](https://www.google.com/recaptcha/about/)
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to protect against spam and abuse. GitLab displays the CAPTCHA form on the sign-up page
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to confirm that a real user, not a bot, is attempting to create an account.
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## Configuration
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To use reCAPTCHA, first create a site and private key.
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1. Go to the [Google reCAPTCHA page](https://www.google.com/recaptcha/admin).
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1. To get reCAPTCHA v2 keys, fill in the form and select **Submit**.
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1. Sign in to your GitLab server as an administrator.
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1. On the top bar, select **Menu > Admin**.
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1. On the left sidebar, select **Settings > Reporting** (`admin/application_settings/reporting`).
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1. Expand **Spam and Anti-bot Protection**.
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1. In the reCAPTCHA fields, enter the keys you obtained in the previous steps.
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1. Select the **Enable reCAPTCHA** checkbox.
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1. To enable reCAPTCHA for logins via password, select the **Enable reCAPTCHA for login** checkbox.
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1. Select **Save changes**.
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1. To short-circuit the spam check and trigger the response to return `recaptcha_html`:
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1. Open `app/services/spam/spam_verdict_service.rb`.
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1. Change the first line of the `#execute` method to `return CONDITIONAL_ALLOW`.
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NOTE:
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Make sure you are viewing an issuable in a project that is public. If you're working with an issue, the issue is public.
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## Enable reCAPTCHA for user logins using the HTTP header
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You can enable reCAPTCHA for user logins via password [in the user interface](#configuration)
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or by setting the `X-GitLab-Show-Login-Captcha` HTTP header.
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For example, in NGINX, this can be done via the `proxy_set_header`
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configuration variable:
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```nginx
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proxy_set_header X-GitLab-Show-Login-Captcha 1;
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```
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In Omnibus GitLab, this can be configured via `/etc/gitlab/gitlab.rb`:
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```ruby
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nginx['proxy_set_headers'] = { 'X-GitLab-Show-Login-Captcha' => '1' }
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```
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