How to choose a high defense server

First of all, we must understand how the high defense server is protected. At present, the most common type of website attack is traffic attack, which is what we often call DDoS attack. The most basic DDoS attack is to use reasonable service requests to occupy too many service resources, so that legitimate users cannot get service responses. CC attack is also a kind of traffic attack. CC is to simulate multiple users constantly accessing pages that require a large amount of data operations, resulting in a waste of server resources. The CPU stays at 100% for a long time, and there are always unfinished connections. The network is congested and normal access is forced to be suspended. Traffic attacks are the occupation of resources. If the resources are sufficient, then this type of attack will not have a great impact on the network. If the bandwidth of the server is insufficient, the impact of the attack will be obvious, which is required The high defense server must have enough bandwidth. In addition, after renting a high-defense server, the service provider will have a hard defense range for the defense of traffic attacks. Under this range, the traction system of the high-defense server will have an identification function for the traffic entering the server, even when it is attacked by the network. The user's network within the protection range will not have any impact. If the attack traffic exceeds the protection range, the IP will be temporarily pulled. Therefore, we can clearly understand the main points of purchasing a high-defense server: bandwidth and "range" size. First of all, because many network attacks use bandwidth-consuming attack methods, from the opposite perspective, bandwidth is one of the criteria for judging whether it is a high-defense server. Secondly, the scope of defense, high defense server data center will have firewall equipment, observe and detect whether the firewall equipment is above 100G, the current highest cluster firewall can reach T-level defense. Of course, the types of attacks that the high-defense server can defend must also be considered, whether it can deal with common network layer SYN, UDP, IMCP and other flooding attacks, and whether it supports HTTP feature filtering, URI filtering, host filtering and other web application protection functions. No to frag flood, smurf, stream flood, land Take effective defense against malformed packet attacks such as flood, etc. In addition, because after all, high-defense servers are for business, so in addition to high-defense, the performance of the server is best to be balanced. You can compare and refer to the IOPS values ​​of various cloud server vendors, so that comprehensive consideration can be selected. The best high defense server. In summary, high-defense servers play a great role in preventing traffic attacks. When selecting high-defense servers, companies and individuals should consider whether the server is stable, in addition to the bandwidth, scope, and types of attacks that can be defended. Factors such as good configuration. The size of the defense capability should be determined according to the combination of the company's own costs and needs. Considering the needs of business expansion, it is best to choose a computer room that can upgrade the defense. This can not only control expenditure costs, but also play a defensive role to avoid server paralysis caused by attacks, which will bring huge losses to the enterprise.