US Patent 11880705 Virtual network function virtual domain isolation

Techniques for virtualized network functions (VNFs) that provide for domain isolation of networks coupled to the VNF are described. A virtual network function (VNF) includes a cloud virtual domain coupling the VNF to a cloud service, a management virtual domain coupling the VNF to a management service, and an external virtual domain having a public Internet Protocol (IP) address. The external virtual domain receives an authentication request providing access credentials for a VNF customer from a cloud client device, provides the authentication request to the management service via the management virtual domain, receives an authentication response from the management service, and, in response to determining that the VNF customer access credentials are valid, initiates application of a policy that allows the cloud client device to configure the cloud virtual domain or the cloud service and disallows configuration of the external virtual domain and the management virtual domain.