# External services
Chevereto includes built-in support for CDN, reCAPTCHA, comment systems, analytics and Cloudflare. The external services can be configured at Dashboard > Settings > External services.
Detailed information about the integration with this service can be found at the CDN documentation.
reCAPTCHA helps to prevent bots from signing up and try to brute-force an user password. To enable this feature you will need to get a reCAPTCHA key.
# Comment systems
This allows you to paste the comment code from serveral comment systems providers like Disqus, LiveFyre or Facebook. This code will be inserted in the image viewer comments section.
# Analytics codes
This allows you to paste the code provided from your analytics service provider like Google Analytics. This code will be printed in each page.