What is a high defense CDN server? What is the difference with high defense server

High Defense Servers

High Defense Servers use single-machine defense or cluster defense, where the attack hits the source server directly. High-defense servers mainly defend against DDoS attacks by regularly scanning existing network nodes, configuring firewalls in backbone nodes, looking for possible security holes, using enough machines to withstand hacker attacks, making full use of network equipment to protect network resources, and filtering unnecessary services and ports. To really do a good job of high defense, hard defense alone is obviously not enough, the strength of the server room will be in the hard defense on the strategy to deal with different kinds of attacks, if the defense strategy is not in place, the attack will still lead to the server's bandwidth, CPU, memory usage is too high, which in turn directly affects the source station, resulting in service interruptions and other issues.

High Defense CDN

The full name of CDN defense is Content Delivery Network Defense. The principle of high-defense CDN is to build a content delivery network on top of the network, relying on edge servers deployed around the world, through the central platform of load balancing, content distribution, scheduling and other functional modules, so that users can get the content they need in the vicinity of the site without having to visit the site source server directly. The principle is simply to set up multiple high-defense CDN nodes, when there is a CDN node attack when the nodes *** with bear. Not because a node was attacked to death and lead to the site can not be accessed, but also can hide the site source IP. here is a key point, once access to the high defense CDN, do not disclose the source server IP address, or attackers can bypass the CDN directly attack the source server.