近年来,国内信息安全产业虽然有了较快发展,各种产品的技术性能也在不断改进,但与日益迫切的信息安全需求相比,信息安全产品在产品结构、技术水平等方面,仍存在明显的不适应,主要表现在:—现有的主流产品,如防火墙、杀毒软件、IDS、VPN等,往往只偏重于对网络进行边界防护,或者 In recent years, although the domestic information security industry has developed rapidly, and the technical performance of various products is constantly improving, compared with the increasingly urgent demand for information security, information security products still exist in product structure and technical level Obviously not suited, mainly in the following: - Existing mainstream products, such as firewalls, anti-virus software, IDS, VPN, etc., tend to focus only on the border of the network protection, or