Anti-DDOS Server is a server solution specifically designed to resist distributed refusal service attacks (DDOS attacks). DDOS attack is a malicious act. The attacker sends a large number of request traffic to the target server by controlling a large number of computers or devices, so that the server is overloaded and cannot provide services normally.

　　The working principle of the high defense server is as follows:

　　Flow filtering and cleaning:

　　High -defense server is located between the target server and the public Internet and acts as a firewall and filter. When the attack traffic reaches the high -defense server, it analyzes and detects the flow, identifies and filter out abnormal flow, such as a large amount of invalid requests, malicious traffic, etc.

　　Black and white list mechanism:

　　The high -defense server uses the black and white list mechanism to identify and filter traffic. The white list lists the trusted IP address, and the blacklist lists the known malicious IP address. According to these lists, high -defense servers can prevent traffic from the blacklist IP, allowing legal traffic from the white list IP.

　　Behavior analysis and machine learning:

　　High -defense server uses behavioral analysis and machine learning technology to detect abnormal flow. It monitor the flow mode and behavior. When the characteristics of the traffic do not match the normal mode, the system will automatically trigger defense measures.

　　Distributed cache and CDN:

　　High -defense servers may use distributed cache and content distribution network (CDN) to share the load of the target server. This can help decentralized traffic and reduce the pressure of the target server.

　　Reverse proxy and load balancing:

　　High -defense server can be used as a reverse proxy server to forward legitimate requests to the target server while filtering out malicious traffic. It can also distribute traffic through a load balancing algorithm to ensure that each server is distributed reasonably.

　　Real -time monitoring and alarm:

　　High -defense server monitor network traffic and server status in real time. Once abnormal traffic or attack behavior is detected, the system will immediately trigger the alarm so that the administrator can take further action.

　　In short, the principle of high defense server is to protect the target server from the effects of DDOS attacks by identifying, analyzing, and filtering malicious traffic. These servers combine a variety of technologies and strategies to ensure the availability and stability of network services.