Shulou(Shulou.com)06/03 Report--

Compared with other CDN service providers, the main advantages of CDN include stable and fast, cost-effective, easy to use, efficient and intelligent. More users will ask about the advantage of stability and speed. Generally speaking, CDN is characterized by sharing the pressure on the origin server, avoiding network congestion, accelerating the distribution of website content in different regions and different scenarios, and improving the speed of resource access. Can CDN defend against DDOS attacks when accelerating defense?

Can cdn defend against ddos? Cdn can effectively mitigate DDoS attacks. Cdn successfully establishes dynamic acceleration mechanism and intelligent sinking mechanism in related nodes, this mechanism can help website traffic access to be distributed to each node, intelligent traffic allocation mechanism, if the cdn is attacked by ddos. The whole Cdn system can disperse the attacked traffic, saving the pressure on the site server and the node. At the same time, it can also make it more difficult for websites to be attacked by hackers. Really help service managers to provide more time that should be attacked, cdn can effectively prevent ddos attacks and reduce the harm to the website.

In the information age of network science and technology, it is inevitable that the network is attacked, and the most common attack is the DDOS attack, so how to solve the DDOS attack?

The full name of DDOS is Distributed Denial of service (distributed denial of Service). Many DOS attack sources attack a server together to form a DDOS attack. DDOS can be traced back to the beginning of 1996, began to appear frequently in China in 2002, and has begun to take shape in 2003. Some DDOS attacks interfere with or even block normal network communication by overloading the network. Overload the server by submitting a large number of requests to the server. Block a user's access to the server to block the communication of a service with a specific system or individual.

Once the website is attacked by DDOS, there are a large number of waiting TCP connections on the host, the network is filled with a large number of useless data packets, the source address is false, creating high-traffic useless data, resulting in network congestion, making it impossible for the victim host to communicate with the outside world normally, and making use of the service provided by the victim host or defects in the transport protocol to send out specific service requests repeatedly and at a high speed, so that the victim host is unable to process all normal requests in time. When it is serious, it will cause the system to crash.

The principle of defending CDN is to judge the source intelligently and then give it back to the user, so that users do not have to make their own choices, which reduces the complexity of the user's use process. Through intelligent DNS parsing, visitors to your website (he uses a mobile server) can link to your mobile. Telecom visitors will link to your telecom server, which acts as a balance to prevent too many visitors from a certain server to avoid website paralysis. It is because the defense CDN has this function that it can defend against DDOS attacks.

If there is anything else you don't understand, you can find our CDN technical engineer on the official website. CDN technical engineer has more than ten years of experience in the industry, so it will be more detailed and professional than the editor's answer. Official website link www.yisu.com

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