Can be extended to. The municipal extranet dn 150 can only use the hub. The role of the hub is to reshape and amplify the ip of the public network and cannot be set to the local area network. You can set it as the WAN port of the router extranet. How to set up the government extranet can make the government extranet browse a variety of contents online like ordinary broadband, so the dn 150 of the municipal extranet can be extended to 250. Extranet generally refers to wide area network. Wideears Network (English: Wideears Network, abbreviated as WAN), also known as extranet and public network. It is a long-distance network connecting computers in local area networks or metropolitan area networks in different regions. It usually spans a large physical range.