How to judge whether it is attacked by DDoS

1、DDOS Will block the connection of the server , Affect the opening of the website
2、 Occupy the server CPU, Send a large number of invalid requests , The resources of the server are heavily occupied , The normal process has not been effectively handled , In this way, the website will open slowly .
3、DDOS The common means of is to occupy the bandwidth resources of the server , Websites built by small organizations , The bandwidth is not big , When occupied by a large amount of invalid data , The server becomes difficult to handle normal traffic data requests .
4、DDOS It may also lead to domain name ping Don't out IP, The target is the DNS Domain name server . When this happens , Server's IP It can be connected normally , But the website page cannot be opened normally , They disguised themselves with a layer of camouflage .
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