A system securely provisions a resource for access by computing systems of an untrusted network. The provisioning is performed securely such that at no stage during the process the computing systems of the untrusted network have direct access to the computing systems of the trusted network. The system creates a temporary network connected to the trusted network and provisions the requested resource in the temporary network. The system connects the temporary network to the trusted network for provisioning of the resource. The system disconnects the trusted network from the temporary network before connecting the untrusted network to the temporary network for providing access to the resource.