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Friends who follow this article must know that Rong Teng network shunt is an important basic equipment for front-end network monitoring in the field of network security! We have to have a chat today, the issue of network security! It can be regarded as a kind of expansion | Network shunt

Network shunt

1\ introduction | Network shunt | Network security

With the popularity of the Internet, the wide application of e-commerce and the acceleration of cloud virtual network construction, people's demand for network security is becoming more and more intense. Due to the increasingly prominent problem of network security, network security products continue to adopt the latest security technology, and suppliers continue to introduce security devices that meet the needs of users and can cope with the current complex environment; at the same time, this also further promotes the development of network security technology and network security assessment and testing technology. In recent years, network security products have developed from a simple packet filtering firewall to the latest application layer design, which can accurately identify users, applications and content, and has complete security protection capabilities and other comprehensive functions. This has achieved great technical innovation, but also provides us with a more diversified choice in the construction of network security system. But how can we evaluate and test the performance, function and security of the new generation of network security devices? This paper will preliminarily discuss the key points, technical schemes and methods of network system security testing and evaluation.

Network shunt

2 Network threat

In the current network environment, the application has become the main carrier of the network, and the threat of network security comes more from the application layer. Therefore, users put forward higher requirements for the control of network security, such as in the diverse and complex user application layer traffic, how to ensure that network security devices can accurately identify applications, block applications with security risks, ensure the normal use of legitimate applications and prevent port embezzlement have become the focus of users' attention in network security assessment at the present stage.

Another important issue is how to simulate complex and real application scenario traffic before network deployment to verify each element of the network security device configuration, thereby reducing the risk of expensive rollback and troubleshooting.

3 Technical scheme of network security assessment and testing | Network shunt

3.1 challenges faced by testing and evaluation the variability and complexity of real user traffic and security threats make the existing laboratory simulation testing methods have the following problems and challenges.

(1) it is difficult to simulate the real scene.

To simulate a real usage scenario, including:

Application traffic: VOIP, video, email, Internet, and enterprise applications.

Abnormal traffic: abnormal and error messages, redundant messages or data frames, etc.

Security × × traffic: DDOS, backdoor, × ×, worms, system tools, viruses and so on.

Abnormal application layer traffic carrying xxx and viruses.

Noise traffic and interference traffic.

Previous tests only focused on the basic forwarding performance of layer 2, 3 and 4 and the functional verification of simple application protocols. However, the real challenge of network security assessment testing is to verify the effectiveness of identifying anomalies and threats from complex traffic. | Network shunt

(2) the process of test and evaluation is complex.

The scenarios and networking that need to be verified are complex, and the business of verification is varied, which leads to the complexity of field networking, the wide range of knowledge involved, the low efficiency of testing, the use of too many equipment, and the waste of too much energy on the construction of the environment and the use of testing equipment.

(3) the development of test and evaluation standards.

With the rapid development of technology, the evaluation standard of network security equipment is constantly evolving and expanding. From the previous testing standards RFC2544 and RFC3511, which are mainly aimed at general network equipment, to the relevant international standards for security testing, as well as the relevant testing standards for IETF, which are under consideration and preparation, all these provide us with new methods and testing ideas. As a network security system, it is necessary to comprehensively consider the performance, function and security, which increases the difficulty of judging the results. | Network shunt

4 concluding remarks | Network shunt

In the above chapters, we discuss in detail the methods and schemes of network security system performance testing. With the increasingly prominent problem of network security, how to develop, verify, evaluate and select security products and systems has become a very important topic. It is hoped that this article can have the effect of throwing a brick to attract jade, and at the same time, I also hope that more and more companies will join the network security industry. Rong Teng Network, as a research and development manufacturer of network monitoring front-end equipment in the field of network security, hopes to make its own positive contribution to China's network security cause through its own efforts.

Finally, I wish you all a happy work!

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