说明：  　本书介绍Linux系统安全维护的技术。主要内容包括：一般性安全问题、高级安全问题、安全策略、信任机制以及猝发入侵和最近的入侵方法，如何为入侵做准备，如何进行入侵检测，如何成功、安全、快速地从遇到的入侵中进行恢复等。本书内容丰富、章节安排合理，适合广大Linux或UNIX系统管理员以及对安全方面感兴趣的读者阅读
(The book introduced the Linux system security technologies. The main contents include: general safety issues, advanced security, security policies, trust mechanisms, as well as burst and the recent invasion invasion methods, how to prepare for the invasion, how to conduct intrusion detection, how successful, safe, fast from the experience of invasion in recovery. The book is rich in content, organization and reasonable for the vast numbers of Linux or UNIX system administrators and security interest to readers)