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# Proxy

Use the **Proxy** tab to configure proxy settings to connect to online services and send API requests.

The **Use system proxy** and **Respect `HTTP_PROXY`, `HTTPS_PROXY`, and `NO_PROXY` environment variables** options are enabled by default. When these options are enabled, Postman uses the proxy settings from your operating system or environment variables. If you want to use a different proxy configuration, you can turn off these options and turn on the **Use custom proxy configuration** toggle. Learn more about [configuring a proxy](/docs/getting-started/installation/proxy/).