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

After purchasing the CDN service, users will be more concerned about whether there is actual effect in the process of using it. First of all, we must first ensure whether it has been successfully opened, and then add the accelerated domain name and configure the CNAME according to the basic steps. After these are successfully completed, the CDN can be used normally. Many users have a question, which is often asked, that is, how to do a good CDN defense.

How to do cdn defense? The website uses high anti-cdn defense, mainly high anti-cdn defense effect, can correspond to various types of attacks, so that the website server from intrusion. Cdn defense is generally carried out in the following ways.

Source station hidden

People who understand the principle of CDN know that once your website is added with CDN, your source IP will be hidden, that is, you will have a lot of IP addresses, you can say how many nodes your CDN service provider has, how many source IP you have.

We know that ddos attacks are mainly aimed at sending requests to the server and then consuming server resources. If the source site cannot be found, the attacker cannot carry out the attack. CDN High Defense effectively hides the IP of the origin server by resolving the domain name to the resolution record value provided by us. In case of DDoS and CC attacks, the attack will also be transferred, so the origin server is safe.

node bandwidth

DDos attacks, also known as traffic attacks, or flood attacks, are sudden floods of data requests that bring down your server. However, after adding CDN, if the attacker still wants to attack, he can only attack the node, while the bandwidth of an ordinary node is more than 1000 G. If the attack wants to kill the node, it must have enough money to support it. Therefore, many attackers will give up their attacks because of the cost.

intelligent scheduling

In fact, the core of CDN is not only nodes and caches, but also intelligent scheduling. That is to say, when an attack really occurs, when the pressure on a node is too high, the Load Balancer system of CDN will automatically divert traffic to solve the problem of traffic explosion.

Number of visits and traffic restrictions

Here is mainly for some of the more subtle attacks and set methods, such as HTTP attacks, for the same IP, access hundreds of times in one second this situation, we can easily judge abnormal access, this time can be limited to this IP. Access restrictions, similar to the above, restrict bursty, irregular traffic. These restrictive operations, also known as traffic cleaning, are generally aimed at CC attacks.

The website's virtual host can enjoy Baidu's massive CDN node resources for free, rich node resources, covering the world, and providing accelerated services for mass users without limited traffic.

If there is anything else you need to know, you can find our CDN technical engineers on the official website. CDN technical engineers have more than ten years of experience in the industry, so they will be more detailed and professional than Xiaobian's answers. Official website link www.yisu.com

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