计算机专业英语 作者 霍宏涛 Chapter11.pptVIP

Professional English in Computer Field Chapter Eleven Information Security technologies 在线教务辅导网： 教材其余课件及动画素材请查阅在线教务辅导网 QQ:349134187 或者直接输入下面地址： 内容 正文 Intrusion Detection Systems and Intrusion Response Mechanism An Introduction to Information Security 阅读材料 Introduction to Firewall Internet Security Architecture 1 Intrusion Detection Systems and Intrusion Response Mechanism 1. Introduction 2. Intrusion responses 2.1. Why Automatic Intrusion Response 2.2 The key factor of development of automatic intrusion response system Key Words intrusion detection system 入侵检测系统 anomaly n. 异常 intrusion response system 入侵反应系统 orifice n. 漏洞 Notes There are many solutions for the first problem, such as using new detection algorithms, improvement of old algorithms, fusion of multiple classifiers and extending detection range of systems etc. 第一个问题有很多种解决方案，比如使用新的检测算法、改进已有的算法、融合多种分类器并扩展检测范围等等。 Intrusion responses are a series actions and countermeasures when an intrusion is detected. These actions and measures can prevent further attacks or restore the system to a normal state. 入侵响应是当检测到入侵后采取的一系列的行动和对策，这些行动和对策可以防止进一步的攻击或者恢复系统到正常状态。 2 An Introduction to Information Security 1. Information Security and Cryptographic Systems 1.1 What is Information Security? 1.2 What Services do Cryptographic Systems Provide? 2. Types of Cryptographic Systems 3. Security Services using Public-Key Cryptosystems 3.1 Public-Key Encryption Confidentiality 3.2 Digital Signatures 3.3 Signed Challenges 3.4 Certification Authorities Key Words information security 信息安全 confidentiality n. 机密性 concealment n. 隐藏 audit n. 审计 authentication n. 验证 repudiate v. 否认 plaintext n. 明文 ciphertext n. 加密文本 symmetric-key cryptosystem 对称密码体制 public-key cryptosystem 公钥密码体制 Key Words divulge v. 泄露 hash function 散列函数 message digest 信息摘要 challenge n. 挑战 mutual authentication 双向认证 subtlety n. 微妙之处，精华 certificate n. 证书 Certification Authority 证书颁发机构 rev