How can I temporarily bypass Cloudflare to test my origin server during a 521 error troubleshooting?

You can temporarily bypass Cloudflare to test your origin server by editing your local `hosts` file. Add an entry mapping your domain name to your origin server's direct IP address. This tells your computer to resolve your domain to your server's IP directly, bypassing Cloudflare's DNS and proxy. Alternatively, you can use a cURL command or a `dig` command specifying your server's IP to test connectivity. Remember to remove the `hosts` file entry after testing.