如果大家了解高防服务器主要是用于防御什么攻击，那么大概就会知道为什么需要大带宽了。
什么是高防服务器?
高防服务器是什么其实很容易理解，就是指独立单个防御50G以上的服务器。能够帮助网站拒绝分布式拒绝服务攻击，并且定时扫描现有的网络主节点，查找可能存在的安全漏洞的服务器类型，都可以称为高防服务器。
高防服务器针对什么攻击?
从防御范围来看，高防服务器是针对SYN、UDP、ICMP、HTTP GET等各类DDoS攻击进行防护，并且能针对部分特殊安全要求的web用户提供CC攻击动态防御。
什么是DDoS攻击?
既然说到高防服务器是针对DDoS攻击的，那么什么是DDoS攻击呢?DDoS又称分布式拒绝服务攻击，这种攻击是利用一批受控制的机器向一台机器发起攻击，这样来势迅猛的攻击令人难以防备，因此具有较大的破坏性。
与DoS攻击由单台主机发起攻击相比较，分布式拒绝服务攻击DDoS是借助数百、甚至数千台被入侵后安装了攻击进程的主机同时发起的集团行为。
为什么防御DDoS需要大带宽?
DDoS攻击的表现形式主要有两种，一种为流量攻击，主要是针对网络带宽的攻击，即大量攻击包导致网络带宽被阻塞，合法网络包被虚假的攻击包淹没而无法到达主机;另一种为资源耗尽攻击，主要是针对服务器主机的攻击，即通过大量攻击包导致主机的内存被耗尽或CPU被内核及应用程序占完而造成无法提供网络服务。无论是哪种攻击方式，使用大带宽才能够防止网络堵塞和资源消耗殆尽的状况。
因此，选择高防服务器的时候，不能仅仅看防御能力，还需要注意带宽的大小。RAKsmart提供高防服务器租用，百兆带宽G口接入，带宽资源充足。
文章来源：www.rakbuluo.com/o82
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