# What ports does the red box use? * TCP: 80, 443, 1337 for the UI and admin things, don't let outside users on them. * UDP: 1352, 30066 - that's where streams are served from. You normaly do not need to open or forward these ports explicitly but should not block them. * There is a case where a data buyer is on a restricted newtork (symmetric NAT) which you will not be able to serve if he's on a restricted network too. {% content-ref url="/pages/Ac9vno3nIIXV7jS9sooJ" %} [Advanced Security](/setup-instructions/advanced-security.md) {% endcontent-ref %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.4dsky.com/most-common-issues/what-ports-does-the-red-box-use.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. 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.