网络业务高速发展，不同业务对于服务器使用的网络协议要求不同，有些业务需要使用UDP协议，有些则用不上，TCP协议也是一样，UDP和TCP都是属于一种网络协议。并且在市面上应用都是比较广泛的。那么UDP相对于TCP来说究竟有哪些优缺点呢？
UDP的优点
UDP要比TCP更快，UDP不容易被攻击，因为无需太多的机制。
UDP的缺点
A. 不可靠不稳定。进行数据传递时，没有太多的机制容易造成数据丢包。在市面上，常见的UDP的攻击，可以说的上是一种淹没式的攻击，主要是基于主机拒绝攻击的一种。UDP属于一种无需连接的协议，不需要用程序来建立连接就可以传输数据。所以当攻击者向受害者服务器发动UDP的数据包时，与此同时便会开展UDP的淹没攻击。
B.会通过产生一个新的目的地址的形式误导服务器处理的同时，将100G的流量攻击放大到300G的量。
为什么要封UDP？
通过对UDP协议的了解，大家应该知道，大部分的攻击都来源于海外，因为海外的流量成本相对于国内来说会更低一些，并且一旦发起攻击，并不容易找到攻击的源头，因此业务开展如果面临大量海外攻击时，封掉海外的UDP可以算的上是一个不错的选择。
以上就是UDP协议的优点和缺点以及为什么要封海外UDP协议，用户游戏运行不需要使用UDP协议的话，建议选择封UDP协议的服务器，有效提升服务器防御效果！
宁波高防护段（TCP_SYN,ACK,RST）展示：
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