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. Many users will be concerned about whether CDN can prevent DDOS attacks. I'll discuss this with you today.

Can cdn defend against ddos attacks? Cdn has the ability to defend against ddos attacks. Previously, github suffered from ddos attacks, which depended on Akamai's CDN network defense. Otherwise, with the large amount of attack traffic at that time, there was no hard defense at that time.

CDN is to alleviate DDoS attacks. Generally, CDN allocates some IP addresses in each province and city, and then resolves the nearest IP address in each province and city by intelligent DNS. As soon as an attacker sees so many IP addresses on your website, he or she may generally give up the attack.

But if you really meet a master, a city to fight, you can also take it down. Because there are many nodes in CDN, but the bandwidth of each node is not large, it is easy to destroy a computer room directly. What is more troublesome is that because CDN shares IP, many other domain names may be assigned to an IP, so when other domain names are attacked by traffic-based attacks such as syn flood, because CDN nodes cannot tell who they are hitting (traffic-based attacks can only see the IP address), the domain name on the entire IP address may be directly sent back to the origin.

To defend against ddos, it is recommended to use CDN in general scenarios, but if it is really targeted by an attacker, you still need to use a high-defense computer room.

If the cdn is attacked by ddos, the whole system can disperse the attacked traffic, saving the pressure on the site server and the node. At the same time, it can also increase the difficulty of the website being attacked by hackers. Really help managers to provide more time, cdn can effectively prevent ddos attacks and reduce the harm to the website.

The above is the answer to whether cdn can protect against ddos attacks. You can click https://www.yisu.com/cloud/ to deploy high defense services.

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