Many enterpises promote to integrate various services into IP network. Those services are TV conference, telephony, and so on. The network system is needed for users to utilize those services properly. We call this network system ``User-Oriented Network System''. User-Oriented Network System manages service quality and provides services corresponding to each user's property. We propose VLAN based dedicated network and Multi-VLAN access method to control service access from users. We equip an user terminal with multiple virtual interfaces. And each virtual interface has unique MAC address. In this way we realize multiple service access. The management server manages service - user mapping table, which realizes easy management. Forthermore to examine the feasibility of the proposed method we develop the network device driver which realizes the virtual interface and find multiple VLAN access is realized.