DoS(Denial of service)是一种利用合理的服务请求占用过多的服务资源,从而使合法用户无法得到服务响应的网络攻击行为。到目前为止,防范 DoS 特别是 DDoS 攻击仍比较困难,但仍然可以采取一些措施以降低其产生的危害。对于中小型网站来说,可以从以下几个方面进行防范。 Denial of service (DoS) is a network attack that uses legitimate service requests that take up too much service resources so that legitimate users can not get service responses. So far, it is still more difficult to prevent DoS attacks, especially DDoS attacks, but some measures can still be taken to reduce the harm they cause. For small and medium sites, you can take precautions from the following aspects.