Please tell me how to defend against DDoS attacks on the Internet

The DDoS protection server is an access request from HSS to NTPF that is detected based on the protection policy that you configure.

If you configure a protection policy that contains multiple common protection rules, for example, you can configure precise access protection rules based on your needs. If you want to delete a protected rule after you configure it, delete the original protected rule and enable or disable it again. Prerequisites: You have completed enterprise project management and purchased protection quotas.

Choose a method. First, there are many types of DDoS defense, such as Anti-DDoS Pro cloud servers, Anti-DDoS Pro IP addresses, and Anti-DDoS Pro servers, which can be selected according to the size of the attack and usage habits, and there is little difference.

The second is that the domestic defense ** is very expensive, followed by Hong Kong, and the defense of the United States is the cheapest (overseas DDoS defense servers avoid choosing CN2GIA lines).

The third is performance, if the attack is small, in order to ensure the performance of the first server, it is recommended to choose China or Hong Kong.

Fourth, defense capabilities, the most cost-effective large-scale DDoS defense is the United States high-defense server, domestic defense is the most expensive, regardless of the cost, the first choice is China, followed by Hong Kong.

With the development and popularization of the Internet, the issue of cyber security has become more and more important. DDoS attacks are a common type of attack that uses multiple computers to send requests to specific applications or servers to exhaust their processing power, resulting in system crashes or even crashes. So, how can we prevent our systems from DDoS attacks?

1. Consolidate basic safety facilities.

First of all, it is necessary to ensure that the basic security facilities of the system have been consolidated, such as timely updating patches, adopting strong passwords, restricting administrator access, etc., and can find out the possible security vulnerabilities of your Qijing system through security assessment and fix them in time.

2. Implement traffic management.

To solve this problem, it is necessary to implement traffic management, including reasonable control of traffic, limit traffic peaks, and adopt manual defense, which can be achieved by deploying traffic management equipment.

3. Deploy attack protection equipment.

In addition, a dedicated attack protection device can be deployed to determine whether the traffic is a DDoS attack, and when detected, the device can automatically block malicious requests to protect the target system from attacks.

4. Effective backup and recovery strategy.

In the event of a DDoS attack, it is important not only to rely on defensive tools to solve it, but also to have an effective backup and recovery strategy in place to quickly restore the system after the attack. Again, this work requires thorough preparation, including regular backup and recovery testing.

5. Timely response and disposal.

Finally, if a system is attacked by DDoS, it should be responded to and dealt with in a timely manner, and even if the system is compromised by the attack, it should be separated from the entire system, and the best solution is to fully recover it.

In short, in order to protect our systems from DDoS attacks, we must fully understand the characteristics of such attacks, take appropriate defensive measures, and do a good job of monitoring, responding and dealing with them. This requires long-term, efficient and careful preparation to ensure that our systems are more reliable and able to overcome the challenges that may arise.

Server's methods of preventing DDoS attacks include, but are not limited to:

1. Design the network security system comprehensively and comprehensively, and pay attention to the security products and network equipment used.

2. Improve the quality of network management personnel, pay attention to security information, comply with relevant security measures, upgrade the system in a timely manner, and strengthen the system's ability to resist attacks.

3. Install a firewall system in the system, use the firewall system to filter all incoming and outgoing data packets, check the border security rules, and ensure that the output packets are correctly restricted.

4. Optimize routing and network structure. Set up your router properly to reduce the possibility of an attack.

5. Optimize the hosts that provide services to the outside world, and restrict all hosts that provide public services on the Internet.

6. Install intrusion detection tools (such as nipc, ngrep), scan and check the system frequently, solve the vulnerabilities of the system, encrypt system files and applications, and regularly check for changes in these files.

In terms of response, while there is no good way to deal with the attack, there are still steps that can be taken to minimize the impact of the attack. For host systems that provide information services, the fundamental principles of the response are:

Maintain service as much as possible and restore service quickly. Since distributed attacks intrude into a large number of machines and network devices on the network, it is ultimately necessary to solve the overall security problem of the network.

To truly solve the security problem, we must cooperate with multiple departments, from edge devices to backbone networks, we must be carefully prepared to prevent attacks, and once an attack is discovered, we must cut off the path of the latest attack in time to limit the infinite enhancement of the attack intensity.

Network users, administrators, and ISPs should communicate frequently to develop plans to improve the security of the entire network.

The above content refers to: Encyclopedia - Distributed Denial of Service Attack.