Several effective DDOS protection schemes you need to know right now

We all know that server security is very important to many industries, that is, DDOS protection measures are very necessary! DDOS attacks and CC attacks are ubiquitous on the Internet. For companies that are highly dependent on networks, they have higher requirements for server defense and processing capabilities. Ordinary servers pay more attention to the balance of capabilities.
　　With the development of the Internet industry, many companies have been exposed to network security threats while gaining huge profits. Denial of service DOS attacks and DOS-based distributed denial of service DDOS attacks are the two most common attack methods. Especially DDOS, with the continuous popularization of high-speed networks, the threat of larger-scale DDOS attacks is also increasing. So how should we do DDOS protection measures in the face of the threat of DDOS attacks?
　　First, choose a computer room with a DDOS hardware firewall
At present, most of the hard defense computer rooms can effectively protect against DDOS traffic attacks within 100G. The choice of hard defense is mainly for DDOS traffic attacks. If your corporate website has been troubled by traffic attacks, then you can consider placing your website server in the DDOS protection computer room. But some traffic attacks are beyond the scope of hard defense, so you have to consider the second one below.
　　2. Choose the cloud defense machine room to
automatically defend 24 hours a day, and generally the high-defense machine room will kill at most two or three hundred G or even hundreds of G (note: it will be lost if it is killed), and it is the bandwidth of the third-tier city, and the speed is also It is relatively slow, cloud defense can effectively solve this kind of problems and can also accelerate the nearby CDN. Companies that want to worry about saving trouble can consider it.
　3. Hide the real IP address of the
　　server 　　 The most fundamental measure for a server to defend against DDOS attacks is to hide the real IP address of the server. When the server transmits information to the outside world, it may reveal the IP. For example, our common use of the server to send mail will reveal the server’s IP. Therefore, when we send mail, we need to send it through a third-party agent, so the displayed IP It is a proxy IP, so the real IP address will not be disclosed. In the case of sufficient funds, you can choose a high-defense server, and add a CDN transfer at the front end of the server, and all domain names and subdomains are resolved by CDN.
　　4. Configure the firewall on the backbone node 　　 The
　　firewall itself can defend against DDOS attacks and other attacks. When an attack is discovered, the attack can be directed to some sacrificial hosts, which can protect the real host from being attacked. Of course, these sacrificial hosts can choose unimportant ones, or systems with fewer vulnerabilities and excellent natural defense against attacks such as Linux and Unix. (So ​​it is better to use Linux system for game server)
　　5. CDN traffic cleaning defense
At present, most CDN nodes have 200G traffic protection function. With hard defense protection, it can be said to be able to cope with the current absolute Most of the DDOS traffic was attacked. At the same time, CDN technology not only protects against corporate website traffic attacks, but also accelerates corporate websites (provided that the location of the CDN node is targeted). Solve the problem of slow website opening in some areas.
　　6. Load balancing technology
This type of DDOS protection is mainly to defend against CC attacks in DDOS attacks. This attack method makes web servers or other types of servers overloaded due to a large number of network transmissions. Generally, these network traffic is directed to a certain page or A link is generated. Of course, this phenomenon will also occur normally on websites with a large number of visits, but we must distinguish these normal phenomena from distributed denial of service attacks. After adding a load balancing solution to the corporate website, it not only protects the website from CC attacks, but also distributes the visiting users to various web servers, reducing the burden on a single web server and speeding up website access.
There is no absolute DDOS protection method. What we can do is to continuously increase the cost of attackers. Stop illegal traffic by means. Reduce the abnormal traffic access of the website, avoid the loss of a large number of users, and reduce the loss of the enterprise.
This article is transferred from: https://www.zhuanqq.com/News/Industry/341.html