月度归档：2011年05月

Intrusion detection technology based on log analysis

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Abstract

 With the popularity and the development of Internet all over the world, the global computer networks have connected people’s study and work together. However, network attacks and intrusions cause a great threat to national security, economic, and social life. Therefore, the information security problems have gradually become the focal point for the information industry, have become an important component of national security, and also are the keys to determine whether the national economy would develops rapidly and sustainably.

Intrusion detection is an important part of information security technology, involving log analysis, vulnerability detection, attack path detection, and other technologies, which rely heavily on data analysis technology. By the security log analysis, the characteristic of the packets for attack and the model of the attack sequence can be easily generated, so the intrusion model can also be obtained.

This report focuses on technology for connectedly analysing network security audit data, the security log to discover the characteristics of the packet of intrusion and the attack sequence model.

Table of Contents

1 Introduction……………………………………………………….. 2

1.1 Background ……………………………………………………….2

1.1.1 Threats to information systems…………………………. 2

2 Overview …………………………………………………………….3

2.1 Intrusion detection …………………………………………….3

2.1.1 Anomaly detection ………………………………………….4

2.1.2 Misuse detection …………………………………………….5

2.2 Security log ……………………………………………………..6

3 Use the web log to detect and analyse hacking ………….7

3.1 Invasion by SQL injection of security holes …………..7

3.2 Invasion with uploading vulnerability …………………8

4 Conclusions and discussion ………………………………….9

5 Literature references ………………………………………….9

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The Relationship between Reduction and Deductive & Inductive Reasoning (Philosophy of science)

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1. Introduction

It is known to all that science is to try to find “real things”. But how can we approach to the “real things”? Usually science can be viewed as experimental sciences. Because we often use experiments and tests to prove the hypothesis and assumption we make. Then we can get the theory and confirmation if experiments and tests succeed. Deductive and inductive reasoning are the main methods to make a scientific research. It is obvious that science should be in logic thinking. These two kinds of reasoning are always used in the procedure of logic thinking. Reduction which is also important in science is another kind of method or reasoning compared to deductive & inductive reasoning. In this article, I will make a discussion about the relationship in reduction and deductive & inductive reasoning in the importance and impact to science.

Table of Contents

1. Introduction. …………………………………………………………….3

2. Conception Thinking. ………………………………………………….3

2.1 Deductive & Inductive Reasoning…………………………………3

2.2 Reduction……………………………………………………………….. 4

3. Relationship between Induction and Reduction………………. 5

4. Relationship between Deduction and Reduction………………. 6

5. Interaction……………………………………………………………….. 7

6. Conclusion………………………………………………………………… 8

7. Reference……………………………………………………………………8

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