What should I do if my website is attacked by DDOS? Full analysis of common protection solutions

in the current rapid development of Internet business, the stability of the website is directly related to the user experience and enterprise revenue, but all kinds of network attacks also follow. Among them, DDOS attacks have become the "confidant of many websites" with their wide range of attacks and strong destructive power. When websites are attacked by DDOS, access cards, servers are often paralyzed or even completely inaccessible, which brings direct economic losses and negative brand impacts to enterprises. This article will comprehensively analyze the coping strategies after websites are attacked by DDOS from multiple dimensions such as emergency response, protection plans, and daily prevention, and help operation and maintenance personnel quickly grasp the protection points.

How to deal with the website after the DDOS attack?

when a website visit is found abnormal, it is first necessary to confirm whether the website has been attacked by DDOS, and then start the emergency treatment process to minimize the loss caused by the attack.

1, quickly locate the type and magnitude of the attack

through server logs, traffic monitoring tools to view abnormal traffic sources, determine whether it is bandwidth consumption, connection exhaustion or application layer attack, and count the peak and duration of attack traffic to provide a basis for subsequent protection scheme selection. For example, bandwidth consumption attacks will fill the server bandwidth in an instant, while application layer attacks initiate requests for specific interfaces.

2. Implement temporary stop-loss operations

if the attack magnitude is small, you can first block the abnormal Internet Protocol Address through the firewall to limit the request frequency of a single IP; at the same time, suspend the non-core business interface to prioritize the normal operation of the core function. If the attack magnitude is large, you should immediately contact the server service provider to request assistance in cleaning abnormal traffic to avoid the server being completely paralyzed due to excessive load.

What are the common protection schemes for websites to be attacked by DDOS?

for different levels and types of websites are DDOS attacks, the need to match the corresponding protection scheme, from basic protection to advanced protection to form a multi-layer protection system.

1, basic hardware and software firewall protection

hardware firewall can initially filter the traffic entering the server and intercept obvious abnormal data packets; software firewalls such as iptables can configure rules to limit the number of IP connections and request frequency, which is suitable for small websites to be attacked by DDOS. This kind of scheme has low cost and is suitable for small and medium-sized websites as a basic protection means.

2, cloud protection platform traffic cleaning

the advantages of cloud protection platform are more obvious when large and medium-sized websites are attacked by DDOS. Cloud as a Service provider has massive bandwidth resources and distributed cleaning nodes, which can channel website traffic to protection nodes, identify and clean abnormal traffic through AI algorithms, and forward normal traffic to the source server, effectively avoiding the server being overwhelmed by attack traffic.

3, high-defense server and CDN acceleration

for large websites that are often attacked by DDOS, you can choose a high-defense server, which has its own large bandwidth and professional protection system, which can directly resist large traffic attacks; at the same time, with CDN acceleration, the static resources of the website are distributed to global nodes, which can not only improve the user access speed, but also hide the source server IP, reduce the probability of attacks directly hitting the source server.

How to prevent the website from being attacked by DDOS again?

website by DDOS attack protection can not only rely on post-disposal, the establishment of daily prevention mechanism to reduce the risk of attack from the root.

1, optimize website architecture and code

use a distributed architecture to deploy the website, split the business to multiple servers to avoid single points of failure; at the same time optimize the code logic, reduce unnecessary request responses, and improve the processing power of the server. For example, add a verification mechanism to form submission and interface requests to prevent malicious requests from occupying server resources and reduce the success rate of the website being attacked by DDOS.

2, establish real-time monitoring and early warning system

deploy professional traffic monitoring tools, set the bandwidth, the number of requests, server load and other indicators of the warning threshold, when the indicator is abnormal timely push alarm information, so that the operation and maintenance personnel in the early stage of the website by DDOS attack can intervene. At the same time regularly carry out attack drills to test the effectiveness of the protection system.

To sum up, the protection of websites against DDOS attacks is a systematic project from emergency treatment to long-term prevention. When encountering an attack, it is necessary to quickly locate, stop losses in time, choose the corresponding protection scheme according to the attack magnitude, and do daily prevention by optimizing the architecture and establishing a monitoring system. Only by building a multi-layer protection system can we effectively reduce the risk of websites being attacked by DDOS and ensure the continuous and stable operation of websites.