With the development of Internet technology, network security training courses have become more and more important and have attracted everyone's attention and attention. In network security, DDOS attack is a very common hacker attack method. It can not only cause large websites to become inoperable, but also affect users' use and cause huge economic losses. So how to defend against DDOS attacks? Let’s take a look at the methods.
How to defend against DDOS attacks?
Not only against DDOS, but also against all network attacks, we should take the most thorough defensive measures as possible, strengthen the detection of the system, and establish a quick and effective response strategy. Defensive measures that should be taken include:
1. Design the network security system comprehensively and comprehensively, paying 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 boundary security rules, and ensure that the output packets are correctly restricted.
4. Optimize routing and network structure, properly configure routers, and reduce the possibility of attacks.
5. Optimize the hosts that provide services to the outside world, and impose restrictions on all hosts that provide public services online.
6. Install intrusion detection tools, scan and check the system frequently, resolve system vulnerabilities, encrypt system files and applications, and regularly check changes in these files.
defense principle
In terms of response, although there is no good way to deal with the attack behavior, there are still measures that can be taken to minimize the impact of the attack. For host systems that provide information services, the fundamental principles to deal with are:
Maintain service as much as possible and restore service quickly. Since distributed attacks invade a large number of machines and network devices on the network, dealing with such attacks ultimately requires solving the overall security problem of the network. Really solving security problems requires the cooperation of multiple departments. From edge devices to backbone networks, we must be carefully prepared to prevent attacks. Once an attack is discovered, we must promptly cut off the path from the nearest attack source to limit the unlimited increase in attack intensity. . Network users, managers, and ISPs should communicate frequently to formulate plans to improve the security of the entire network.
How long does it take to study Oldboy network security technology training?
It usually takes about 3 months, from 8:30 in the morning to 10 in the evening, full-time teaching, teaching and practicing at the same time, focusing on the digestion and absorption of knowledge points taught in class, paying attention to learning effects, and irregular periodic tests to test the learning results of students. , to make up for the lack of learning.