RAK部落在经常和一些IDC行业的技术人员聊天的时候，发现在行业中，通常情况下，会把独立的单个防御在50G以上的会称之为高防服务器，但是据RAK部落所知，高防服务器不同于其他服务器，在于能够提供网络安全，不同的线路对应不同种类的高防服务器，下面我们来看看几大高防服务器种类：
电信高防服务器：
众所周知，中国的电信运营商向来带宽不但大，而且多，所以机房的服务器防御能力最强的， 电信机房的出口带宽种类多，无论是大小还是独享或共享，还有就是防御的大小，都能够根据客户的需要进行选择，找到最合适自己的，这个是很不错的。
网通高防服务器：
由于网通防护能力一般，因此基本上不会有单独的网通高防服务器。而且国内的网通机房并不多，基本都在北方，正所谓“南电信，北网通”。
双线高防服务器：
电信高防服务器再好，也无法解决北方网通用户的访问慢问题，但是客户的业务不可能放弃北方的市场，所以国内诞生了双线服务器，顾名思义就是电信网通两条线路都有，解决了南北互通问题， 但是大部分双线服务器的网通防御基本是没有的。
海外高防服务器：
只要不是中国大陆的机房统称海外机房，走的都是国际带宽，要想让国内访问快，就用复杂昂贵的BGP技术，由此保证国内电信网通访问都一样，虽然国际带宽距离远，但是各种问题都可以解决，我们国内用户推荐选择使用美国的高防服务器，带宽高，免备案。
关于高防服务器种类已经介绍完了，看到这相信很多人会想问如何选择合适的高防服务器？其实怎么选，只需要根据自身业务的发展和地区等因素来选择合适的机器，小编一直在用着的是RAKsmart的美国服务器，很多年一直很稳定，也可根据种类去选择挑选一下合适的机器。
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