It is relatively common for U.S. servers to encounter DDoS attacks on the network. This type of attack can cause the U.S. server website to go down, crash, or have its content tampered with, further causing serious damage to the brand and property of U.S. server users. This article will share a few A defense scheme for a US server against DDoS attacks.

Option 1: Autonomous Defense

1. Regularly scan for vulnerabilities, to ensure that the US server program software does not have any vulnerabilities, prevent attackers from intruding, and patch and repair vulnerabilities in time.

2. Ensure that the U.S. server adopts the latest system, and update and apply security patches in time.

3. Filter unnecessary services and ports, that is, filter fake IPs on routers, and only open service ports, for example, WWW servers only open 80 ports, close all other ports, or set them on the US server firewall to block them.

4. Check the source of the visitor, use methods such as unicast reverse path forwarding, and query through the reverse router to check whether the visitor's IP address is true, and if it is false, block it. Many hackers often use fake IP addresses to confuse users, and it is difficult to find its source. Therefore, using unicast reverse path forwarding can reduce the occurrence of fake IP addresses and help improve the security of the US server network.

Solution 2: Use Anti-DDoS server

The high-defense server mainly refers to an independent single hard-defense defense against DDOS attacks and CC attacks. US server hosts for security breaches.

Solution 3: Adopt Anti-Defense IP

The US server high-defense IP is a service for the case where the service is unavailable after the Internet suffers a large-traffic DDoS attack. The defense principle is that users can divert the attack traffic to the US server high-defense IP by configuring the US server high-defense IP , so as to protect the real IP from being exposed and ensure the stability and security of the source site.

Solution 4: Adopt Anti-DDoS CDN

The full English name of US server CDN defense is Content Delivery Network Defense, that is, content separation data traffic defense. The basic principle is that the content distribution network built in the Internet, with the help of the US server hosts deployed on the edge network in various places, according to the load balancing, content distribution, production scheduling and other program modules of the management center service platform, makes the US server customers close to the principle Get what you need.

Solution 5: Configure Web Application Firewall

The US Web Application Firewall implements a series of security policies for HTTP/HTTPS. The US Server Web Application Firewall is referred to as: WAF, based on cloud security and big data capabilities, used to defend against SQL injection, XSS cross-site scripting, common Web server plug-in vulnerabilities, Common attacks such as Trojan horse uploads and unauthorized access to core resources, and massive malicious CC attacks are filtered to avoid data leakage of US server website assets and ensure the security and availability of US server websites.

The above is the introduction of the US server's defense against DDoS attacks. System administrators can deploy it according to their own needs to ensure the security of the US server website.