Security is a key issue in design and deployment of wireless network. Security technologies mainly used in existing equipment include SSID, MAC address filtering, WEP, 802.11X etc, which are of certain security flaws in the design and can not well protect wireless network. This paper presents a deployment solution that applying VPN technology in wireless network, which designs a VPN gateway in a Linux system environment by SSL technology, so as to solve the current security issues in accessing resources within the network through wireless network.