With the rapid development of the Internet, malicious network attacks are becoming more and more frequent. The common ones are ddos attacks, cc attacks, etc. What is ddo and what is an attack? How should we deal with ddos attacks? Today we will talk about Talk about how Hong Kong vps cloud server defends against DDOS attacks.

What is a ddos attack?

Distributed denial of service attack (English means Distributed Denial of Service, referred to as DDoS) means that multiple attackers in different locations launch attacks on one or several targets at the same time, or an attacker controls multiple machines in different locations. And use these machines to attack the victim at the same time. Since the origin of the attack is distributed in different places, this type of attack is called a distributed denial-of-service attack, and there can be multiple attackers.

There are two main manifestations of DDoS. One is traffic attack, which is mainly an attack on network bandwidth, that is, a large number of attack packets cause network bandwidth to be blocked, and legitimate network packets are flooded by false attack packets and cannot reach the host; the other is A resource exhaustion attack is mainly an attack on the server host, that is, through a large number of attack packets, the memory of the host is exhausted or the CPU is occupied by the kernel and application programs, resulting in the inability to provide network services.

How Hong Kong vps cloud server defends against DDOS attacks:

1. High defense IP:

When being attacked, all the traffic is introduced into the high-defense IP for cleaning, the attack traffic is filtered and then returned to normal traffic, and the access to the high-defense IP will hide the original website ip (the attacker first finds the ip of the website server, and then initiates traffic to the ip attack) to avoid other hackers.

2. High Defense CDN:

The CDN node caches the content of the website to a regional node, and then calls the cached content to the nearest node when the user visits, instead of directly accessing the source server (CDN itself has the function of hiding the source IP), and the high-defense CDN is to deploy defenses on each node (attack traffic Cleaning), when a certain node encounters an attack, it will be distributed to all nodes to resist the attack. If a certain node cannot defend, it will temporarily give up the access request of this node and abandon the car to protect the handsome.

3. High Defense Cloud Server:

The high-defense cloud server is an ordinary cloud server that sets up platform defense. Its defense capability mainly depends on the size of the purchased defense. Although the high-defense cloud server has certain defense capabilities, the defense method is single and can only rely on the platform.

4. Anti-Advanced server:

The high-defense server is currently the most effective defense method, and it defends against attacks through its own server resources and the firewall of the platform.