# Headers

Website Unblocker support sending your own custom headers as part of your request.

Sending customer headers is done by adding the following header to your request `-H 'x-netnut-custom-header: true'`

Website Unblocker will add your custom headers into the headers defined by Website Unblocker and then use them when connecting to the destination website.

The Header feature supports standard headers like`Accept-Language` as well as your own custom headers or headers designed specific target websites. Note that some headers are blacklisted and blocked by default. You can find them in this list - 

* `accept`
* `accept-encoding`
* `af-ac-enc-dat`
* `authority`
* `authorization`
* `cache-control`
* `connection`
* `cookie`
* `cookie-control`
* `device_profile_ref_id`
* `downlink`
* `method`
* `origin`
* `pragma`
* `referer`
* `rtt`
* `scheme`
* `sec-ch-device-memory`
* `sec-ch-dpr`
* `sec-ch-ua`
* `sec-ch-ua-arch`
* `sec-ch-ua-full-version-list`
* `sec-ch-ua-mobile`
* `sec-ch-ua-model`
* `sec-ch-ua-platform`
* `sec-ch-viewport-width`
* `sec-fetch-dest`
* `sec-fetch-mode`
* `sec-fetch-site`
* `sec-fetch-user`
* `sec-websocket-extensions`
* `sec-websocket-key`
* `sec-websocket-version`
* `upgrade-insecure-requests`
* `user-context`
* `user-agent`


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```
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```

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.