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This article mainly explains "the method of defending against ddos attack". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "the method of defending against ddos attack".

Understanding of ddos protection:

Resisting ddos is a systematic project. It is unrealistic to rely solely on a certain system or commodity to prevent ddos. It is certain that it is impossible to completely eradicate ddos, but it is possible to resist 90% of ddos attacks through appropriate methods. According to the cost of both attack and defense, if the ability to resist ddos is enhanced by appropriate methods, it means that the attack cost of the attacker will be increased. Then the vast majority of attackers will be unable to continue and abandon, which is equivalent to successfully resisting ddos attacks.

Ways to protect against ddos:

1. Choose high-performance network equipment

First of all, it is necessary to ensure that network equipment does not become a bottleneck, so when selecting routers, switches, hardware firewalls and other devices, we should try to choose products with high popularity and good reputation. In other words, it is even better to assume that there is a special connection or agreement with the network provider, when many attacks occur, ask them to do some traffic constraints at the network contact to oppose some kinds of ddos attacks.

2. Try to prevent the use of NAT.

Whether the router or the hardware protection wall equipment, try to prevent the use of network address translation NAT, because the selection of this technology will greatly reduce the network communication ability, the original factor is very simple, because the NAT needs to change the address back and forth, the transformation process needs to calculate the checksum of the network packet, so a lot of CPU time is wasted, but sometimes it is necessary to use NAT, so there is no good way.

Thank you for your reading, the above is the content of "methods to defend against ddos attacks". After the study of this article, I believe you have a deeper understanding of the methods of defending against ddos attacks, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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