Of course. With the popularization of metropolitan area network technology, all walks of life have their own private networks, such as education private networks, enterprise private networks, medical private networks, environmental protection private networks, etc., which can easily share resources and exchange information in metropolitan area networks. However, private networks can't directly access the Internet, and the interconnection between environmental protection private networks and the Internet can be realized by configuring on dual-network routers. Private network is a private network. In the Internet address architecture, a private network refers to a network that conforms to RFC 19 18 and RFC4 193 and uses a private IP address space.