Today, in order to prevent DDoS traffic attacks in the market, many enterprises have launched high defense servers for DDoS traffic attacks, which are protected by these products. What are the DDoS traffic attacks protected by these products? Next, Micronet will take you to understand how to prevent personal servers from DDoS attacks, hoping to help you understand the commonly used protection methods for DDoS traffic attacks in the market.
The full name of DDoS traffic attack: Distributed denial of service attack, which is translated into Chinese as distributed denial of service attack, abbreviated as DDoS, is called flood attack in China because of the context, continuity and continuity of DDoS traffic attacks. At present, DDoS traffic attacks are the most common means of attack on the network, mainly through the public distribution of reasonable service requests to make the attacked server resources exhausted, resulting in the server services to provide normal services, which means increasing the number of server visits, overloading them, leading to server crash or paralysis. Just like a large number of users used Taobao during the Double 11 Festival, the excessive number of users made Taobao unable to run quickly, resulting in page paralysis.
For DDoS traffic attacks, the micro network believes that it can be divided into two major levels, bandwidth consumption and resource consumption, from network consumption to target hardware performance consumption, and finally to target server network paralysis and system collapse. Next, Micronet will list several commonly used DDoS communication attacks.
PING of death Ping of death, or "dead ping", can also be translated as "dead ping". This attack is mainly a DDoS communication attack through the TCP/IP protocol. This attack is mainly by sending fragments larger than the size specified in the TCP/IP protocol to the server, which makes the server system unable to process normally, leading to a crash, The maximum byte of the data packet is 65535 bytes.
CC attack: CC (Challenge Collapsar), which means "black hole", uses a large number of broilers (free proxy servers) to send a large number of seemingly legitimate requests to the target server, so as to continuously use the resources of the attacked server to make repeated requests, making its resources constantly consumed. When the server resources are consumed, Users will not be able to access the server normally to get the server's response. During the cc attack, they can feel the stability of the server is declining until the server is paralyzed.
DUP flood attack: User Datagram Protocol waters, a connectionless protocol, attacks mainly through the handshake principle in the information exchange process. When a user sends data through UDP, three data handshake verifications cannot be performed normally, resulting in the inability to perform normal handshake verification when a large number of data packets are sent to the target system, resulting in bandwidth occupation, The server cannot be accessed by ordinary users, resulting in server paralysis or crash. However, the following methods are commonly used in the market to defend against these DDoS traffic attacks:
The common protection method against DDoS traffic attacks is multi verification. For the bandwidth blocked by attacks, intrusion detection and traffic filtering methods can filter the traffic, so that normal traffic can access the target server normally, thus maintaining the normal operation of the server.
That is, all the access traffic of the server passes through the DDoS high defense attack traffic cleaning center. Through various high defense protection strategies, the cleaning and filtering of normal traffic and malicious traffic can be distinguished, preventing malicious traffic from leaving the server, allowing normal traffic to access normally, and prohibiting malicious traffic to achieve filtering.
In DDoS traffic attack protection, firewall is the most commonly used protection device, which can flexibly define the access rules of the firewall. By modifying the rules, you can allow or deny specific communication protocols to enter the server, regardless of the port or IP address. Once you find that the target IP is abnormal, you will directly block all communications of the IP source, even if the more complex ports are attacked, It can still effectively protect DDoS traffic.
Although DDoS traffic attacks have shown a downward trend in recent years, it is undeniable that DDoS traffic attacks are still a great threat to network security, and with the development of technology, some new types of DDoS traffic attacks are still active in the field of network security, such as 0x boot, which is regarded as a variant of Mirai. With the reform and investment of new Internet technology and new equipment, many hackers are still updating and improving DDoS traffic attacks. Therefore, in the battlefield of DDoS traffic attack protection, the technology of network security protection personnel needs to be constantly updated and changed.
The above content is how to prevent personal servers from encountering DDoS attacks. We hope it can help you avoid DDoS attacks and make your website better and better. If you still don't know anything, please contact us. If you have more questions about virtual hosting, please consult Micronet. Micronet is an IDC service provider focusing on server rental and hosting. With more than 10 years of industry experience, it is safe, stable, reliable and reassuring. It is a leading enterprise in the domestic IDC industry. It helps thousands of enterprises to achieve network informatization, 7 * 24 hours of manual service, after-sales care free, and has a good reputation.
