High-defense servers and high-defense IPs are a way to resist network attacks. High-defense servers that do not require filing procedures and have high cost-effectiveness and high speed are very popular in the mainland. Common high-defense servers that do not require filing not only have CN2 optimized bandwidth, but also have corresponding international bandwidth, which can meet the business needs of mainland enterprises and foreign trade enterprises in developing overseas market businesses.
　　1. The difference between high-defense servers that do not require filing and high-defense IPs:
　　1. High-defense servers: mainly refers to an independent single server. The defense value of high-defense servers that do not require filing on the market is generally around 10G, 20G, 50G, and 100G. Users choose low defense values ​​in the early stage.
　　Defense measures for high-defense servers:
　　IDC service providers provide soft defense and hard defense. The computer room needs sufficient network equipment. Network equipment generally includes load balancing equipment such as routers and firewalls, which can effectively maintain the network and effectively weaken ddos ​​attacks; shut down unnecessary services and ports; hide the real IP address of the server; optimize routing and network structure. Reasonably set up routers to reduce the possibility of being attacked, etc. The defense types of high-defense servers are divided into single-machine defense and cluster defense, and the defense capabilities are divided into different sizes. If the defense traffic is exceeded, the high-defense server will be overwhelmed, the server will be paralyzed, and visitors will not be able to access the website.
　　2. High-defense IP: refers to the IP segment provided by the high-defense computer room, which is mainly used to prevent DDoS attacks in the network. In the network world, IP is equivalent to the house number of the server, and access and management of the server are all carried out through IP. Similarly, if a network attacker wants to attack the target with DDoS, he needs to know the target's IP address and request the IP server with a large amount of invalid traffic data, causing the server to occupy a large amount of resources and unable to respond to the correct request.
　　High-defense IP defense measures:
　　High-defense IP resolves the domain name to a high-defense IP and configures the source IP. All public network traffic passes through the high-defense IP computer room, and the access traffic is forwarded to the source station IP through the high-defense IP through the port protocol forwarding. At the same time, the malicious attack traffic is cleaned and filtered on the high-defense IP, and then the normal traffic is returned to the source station IP to ensure the stable access of the source station IP. This defense method has strong defense capabilities and low costs, and is the DDOS defense measure chosen by most companies.
　　High-defense servers and high-defense IPs can resist attacks including but not limited to the following types: synchronous attacks, UDPFlood, ICMPFlood, IGMPFlood, ACKFlood, PingSweep, etc.  
　　2. Can high-defense servers without filing add IPs? Is it a defense IP?
　　High-defense servers without filing can add defense IPs. Many IDC service providers on the market now provide local defense IPs and overseas defense IPs. For example, some Hong Kong high-defense computer rooms use Hong Kong local IPs and US IPs. High-defense servers without filing for Hong Kong local IPs do not need to transfer traffic, so when an attack occurs, it will not affect network latency, and the price is relatively high; when an attack occurs, high-defense servers without filing for US IPs transfer traffic to the US data center for cleaning, and then send it back to the Hong Kong data center. In this process, network latency will increase, so the price of this type of high-defense server without filing is relatively low.
　　High-defense servers without filing can add defense IPs, and the defense value of IPs can be allocated according to the server defense value. Generally, servers support up to 5 defense IPs, and there is no limit on the number of ordinary IPs.
　　The deployment of high-defense servers without filing can improve business security, protect user data privacy from being leaked or stolen, and can improve defense value in the later stage.
　　High-defense servers without filing and high-defense IPs have their own defense measures. High-defense and servers have high defense capabilities and strong information security, which means high costs; although high-defense IPs have good defense capabilities and costs, once the source IP is exposed, the high-defense IP will completely fail. JTTI professional T3+ data center room, with both software and hardware firewalls, provides users with reliable high-defense servers without filing, effectively protecting data security.