【摘要】 随着PDM系统中涉及的客户多样化,数据安全仅依靠用户名和密码方式已不能适应要求,虚拟专用网(VPN)的出现和与PDM的结合,并通过隧道技术等加强了系统的安全。更多还原

【Abstract】 With the diversity of clients involved in PDM (Product Data Management) system, it has not adapted to the new requirements only depending on software method with user name and password for the data security. With the appearance of VPN (Virtual Private Network) and its combination with PDM and tunneling technology, etc., the security of network system can be strengthened.更多还原