debian-mirror-gitlab/doc/integration/recaptcha.md

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---
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stage: Create
group: Ecosystem
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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---
# reCAPTCHA
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GitLab leverages [Google's reCAPTCHA](https://www.google.com/recaptcha/about/)
to protect against spam and abuse. GitLab displays the CAPTCHA form on the sign-up page
to confirm that a real user, not a bot, is attempting to create an account.
## Configuration
To use reCAPTCHA, first you must create a site and private key.
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1. Go to the URL: <https://www.google.com/recaptcha/admin>.
1. Fill out the form necessary to obtain reCAPTCHA v2 keys.
1. Log in to your GitLab server, with administrator credentials.
1. Go to Reporting Applications Settings in the Admin Area (`admin/application_settings/reporting`).
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1. Fill all reCAPTCHA fields with keys from previous steps.
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1. Check the `Enable reCAPTCHA` checkbox.
1. Save the configuration.
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1. Change the first line of the `#execute` method in `app/services/spam/spam_verdict_service.rb`
to `return CONDITONAL_ALLOW` so that the spam check short-circuits and triggers the response to
return `recaptcha_html`.
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NOTE:
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Make sure you are viewing an issuable in a project that is public, and if you're working with an issue, the issue is public.
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## Enabling reCAPTCHA for user logins via passwords
By default, reCAPTCHA is only enabled for user registrations. To enable it for
user logins via passwords, the `X-GitLab-Show-Login-Captcha` HTTP header must
be set. For example, in NGINX, this can be done via the `proxy_set_header`
configuration variable:
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```nginx
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proxy_set_header X-GitLab-Show-Login-Captcha 1;
```
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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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```