> For the complete documentation index, see [llms.txt](https://docs.vdo.ninja/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vdo.ninja/common-errors-and-known-issues/enterprise-firewall-checklist.md). # Enterprise firewall checklist What to ask IT for when enterprise firewalls break calls When guests frequently reconnect or can’t see/hear each other on enterprise networks: * Prefer UDP: Permit outbound UDP for WebRTC to STUN/TURN and peers; avoid DPI that times out UDP flows. * TURN fallback: Allow relay (TURN) over TCP/TLS when UDP is restricted. Use your own TURN if needed. * Open ports: Follow the port guidance documented for VDO.Ninja traffic. * Alternate paths: Try `backup.vdo.ninja`, WHEP/WHIP viewers, or Meshcast when strict egress control is required. Related * `common-errors-and-known-issues/relay-candidate-being-selected.md` * `turnserver.md` * `advanced-settings/whip-parameters/and-whep.md` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.vdo.ninja/common-errors-and-known-issues/enterprise-firewall-checklist.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. 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.