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This article shows you what the network security defense system has, which is concise and easy to understand, which can definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

Common network security defense system

Most Internet companies rely on the Internet for their business, so we are talking about business network security based on the data center / cloud environment. The main responsibility of Party A's security is to protect the security of the company's Internet business, such as business continuity and the privacy of business data, so we should give priority to solving the following problems:

Anti-DDOS attacks to ensure business continuity

Anti-drag library, protect the privacy of business data, place user data, transaction data and other core data are stolen

Open the back door to prevent hackers from illegally obtaining server permissions.

Border defense system

The common defense system is border protection. From UTM to the next generation firewall, WAF is the product of this system. This kind of system emphasizes keeping the enemy out of the country and solving security problems at the network boundary. The advantage is that it is easy to deploy, as long as you deploy security devices at the network boundary, which seems to cure all diseases; but the weakness is also obvious, once the boundary is breached by hackers, you can drive straight in. Some people have made an analogy, saying that this defense system is a castle system, the defense is all in the city wall, it is good to protect it, and if you do not guard it, you can only let the enemy into the city and slaughter the city.

Defense system in depth

The defense in depth system is an improvement to the border defense system, which emphasizes that any defense system is not omnipotent, and there is a probability that hackers can break through defense measures, so the essence of defense in depth is multi-layer defense. just like building several defenses around the castle, the castle is divided into outer city and inner city, and the important internal facilities are also equipped with full-time first Russia. Hackers have to break through several layers to gain access to core data assets, which can greatly increase costs. The concept of defense in depth has been successful for a long time, because hacker attacks also have costs, and many hackers have been unable to attack for a long time, so they begin to think of other ways. Large traditional security vendors generally have defense-in-depth solutions.

Defense system in depth

In the Web domain, it will include at least the following layers, database side, server side, network layer, network boundary. The advantage is that the functional positioning of each product is clear, different brand products are allowed to be mixed, the attack cost is high, and the security is good, and the deficiency is the lack of coordination mechanism among various products, such as blind people touching the elephant and going their own way. the detection means are mostly based on rules and blacklist, for professional hackers with economic and political purposes, it is only a matter of time to conquer this defense system. It should be noted that the complete in-depth confrontation method will also include server kernel-level detection and confrontation. Corresponding security products:

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Database side: database audit, database firewall

Server side: host IDS, server antivirus, kernel hardening products, host waf

Network layer: IDS,Web threat awareness, Web audit

Network boundaries: firewall, UTM,WAF,IPS, local traffic cleaning equipment

River defense system

In the river defense system proposed by Tencent lake2, the defender must rely on one word to win, "control", that is, to control the opponent in a controllable range and defeat him with rich resources. Back to enterprise intrusion prevention, the idea of "control" is to build defenses step by step, so that hackers can operate within a controllable range even if they invade. The specific measure is to strictly control the access of the office network to the production network on the basis of isolation, and to carry out boundary protection and inspection on the basis of isolating the interior of the production network. The river defense system is especially suitable for data center users, and it is integrated into security management and control companies from business planning. For companies with certain development capabilities, you can refer to this system if you plan to build a security system by yourself.

Tower defense system

Digital companies have mentioned the tower defense system many times, and the tower defense system is essentially defense in depth, but what is better than defense in depth is that it emphasizes that the terminal should be included in the security defense network, with self-defense capability, and cloud control capabilities and threat intelligence data.

What are the above contents of the network security defense system? have you learned the knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

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