> For the complete documentation index, see [llms.txt](https://docs.voting.works/vxsuite-tdp-v4/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.voting.works/vxsuite-tdp-v4/system-security-auditing-and-logging/software-security/networking.md). # Networking All VxSuite components are blocked from connecting to any network. Thus, there is no networking in a VxSuite implementation. Our network design is secure by virtue of it being completely absent. Networking is disabled through several layers of defense: * Network drivers and known network connections are purged in the software setup process. See [these lines in the setup-machine.sh](https://github.com/votingworks/vxsuite-complete-system/blob/v4.0.2/setup-machine.sh#L443-L445) script. * Secure boot ensures that the hard drive is not modified, thus preventing software that isn’t part of the approved VotingWorks bundle from running. * The network stack is disabled in the BIOS. * Wi-fi or bluetooth hardware is not present on the machines. * Ethernet ports are blocked. * As a final layer of defense, a [firewall configuration](https://github.com/votingworks/vxsuite-build-system/blob/v4.0.2/playbooks/trusted_build/firewalld.yaml) is defined to block any incoming or outgoing traffic in the event a connection was somehow created. Because there is no networking, all electronic data transfer is air-gapped via USB drives. --- # 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 dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.voting.works/vxsuite-tdp-v4/system-security-auditing-and-logging/software-security/networking.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.