2019-03-30 10:59
116.31.125.x 服务器防护是什么
大家在买服务器的时候,经常听人家说服务器提不提供防护,提供多少防护,这个服务器是硬防还是软防?
今天给大家讲解一下什么是服务器防护,服务器防护多大就够用了。
首先,说到防护,肯定会有攻击,当然了,没攻击也就不需要防护了,这里简单给大家说2个攻击吧:
一、DDOS攻击:
分布式拒绝服务(DDoSistributed Denial of Service)攻击指借助于客户/服务器技术,将多个计算机联合起来作为攻击平台,对一个或多个目标发动DDoS攻击,从而成倍地提高拒绝服务攻击的威力。DDoS攻击通过大量合法的请求占用大量网络资源,以达到瘫痪网络的目的。 这种攻击方式可分为以下几种:
1、通过使网络过载来干扰甚至阻断正常的网络通讯;
2、通过向服务器提交大量请求,使服务器超负荷;
3、阻断某一用户访问服务器;
4、阻断某服务与特定系统或个人的通讯。
二、CC攻击:
攻击者借助代理服务器生成指向受害主机的合法请求,实现DDOS,和伪装就叫:CC(ChallengeCollapsar)。
CC攻击的原理就是攻击者控制某些主机不停地发大量数据包给对方服务器造成服务器资源耗尽,一直到宕机崩溃。CC主要是用来攻击页面的,每个人都有这样的体验:当一个网页访问的人数特别多的时候,打开网页就慢了,CC就是模拟多个用户(多少线程就是多少用户)不停地进行访问那些需要大量数据操作(就是需要大量CPU时间)的页面,造成服务器资源的浪费,CPU长时间处于100%,永远都有处理不完的连接直至就网络拥塞,正常的访问被中止。
看完上面对攻击简单的介绍后,大家也有了一些概念了,那么,小张就再说说什么是防护:
一、服务器硬防:
硬防即硬件防火墙,是指把防火墙程序做到芯片里面,由硬件执行这些功能,能减少CPU的负担,使路由更稳定。它是保障内部网络安全的一道重要屏障。它的安全和稳定,直接关系到整个内部网络的安全。因此,日常例行的检查对于保证硬件防火墙的安全是非常重要的。
二、服务器软防
软防就是软件防火墙,系统中存在的很多隐患和故障在暴发前都会出现这样或那样的苗头,例行检查的任务就是要发现这些安全隐患,并尽可能将问题定位,方便问题的解决。
看到这,需要服务器的朋友们对于攻击和防护是不是了解了很多呢?对于需要多大的防护,就看你本身要承受多大的攻击而定了。
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