2016-01-14 18:37:52 +05:30
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# reCAPTCHA
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GitLab leverages [Google's reCAPTCHA](https://www.google.com/recaptcha/intro/index.html)
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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 you must create a site and private key.
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1. Go to the URL: https://www.google.com/recaptcha/admin
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2. Fill out the form necessary to obtain reCAPTCHA keys.
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3. Login to your GitLab server, with administrator credentials.
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4. Go to Applications Settings on Admin Area (`admin/application_settings`)
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5. Fill all recaptcha fields with keys from previous steps
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6. Check the `Enable reCAPTCHA` checkbox
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2018-11-08 19:23:39 +05:30
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7. Save the configuration.
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## Enabling reCAPTCHA for user logins via passwords
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By default, reCAPTCHA is only enabled for user registrations. To enable it for
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user logins via passwords, the `X-GitLab-Show-Login-Captcha` HTTP header must
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be set. For example, in NGINX, this can be done via the `proxy_set_header`
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configuration variable:
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```
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proxy_set_header X-GitLab-Show-Login-Captcha 1;
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```
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In GitLab Omnibus, 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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