微站,网站制作公司网站建设网站,素材网免费下载,软件工程学校排名游戏产业的迅猛发展也让游戏产业成为被黑客攻击的重灾区。什么原因让游戏行业成为DDoS的攻击重点。总结有如下原因和主要手段#xff1a; 1.游戏行业的攻击成本较低#xff0c;攻防成本1#xff1a;N。随着DDoS攻击的打法越来越复杂#xff0c;攻击点更是越来越多#xff…游戏产业的迅猛发展也让游戏产业成为被黑客攻击的重灾区。什么原因让游戏行业成为DDoS的攻击重点。总结有如下原因和主要手段 1.游戏行业的攻击成本较低攻防成本1N。随着DDoS攻击的打法越来越复杂攻击点更是越来越多基本的静态防护策略已无法达到较好的效果易攻难守的特点让游戏行业成为黑客的眼中肥肉。 2.游戏行业生命周期短。据2017年上半年游戏行业DDoS态势报告显示90%的游戏业务在被攻击后的2-3天内会彻底下线游戏公司日损失可大数百万元。黑客认定游戏公司为避免损失更大相对更愿意支付“保护费”。 3.游戏行业对于持续性的要求更高需要7*24*365在线畅通。据2017年上半年游戏行业DDoS态势报告显示攻击超过2-3天以上玩家一般会从几万人掉到几百人玩家决定了游戏的存亡失去玩家就等于频临垂死。 4.游戏行业火爆同行之间竞争激烈造成不少的恶意竞争。这也是导致游戏行业DDoS攻击数量剧增的原因之一。 当前游戏行业DDoS攻击的主要手段有以下几种 SYN/ACK Flood 攻击 这种攻击方法是经典最有效的 DDOS 方法 可通杀各种系统的网络服务 主要是通过向受害主机发送大量伪造源 IP 和源端口的 SYN 或 ACK 包导致主机的缓存资源被耗尽或忙于发送回应包而造成拒绝服务 由于源都是伪造的故追踪起来比较困难 缺点是实施起来有一定难度 需要高带宽的僵尸主机支持。少量的这种攻击会导致主机服务器无法访问 但却可以 Ping 的通 在服务器上用 Netstat -na 命令会观察到存在大量的 SYN_RECEIVED 状态大量的这种攻击会导致 Ping 失败、TCP/IP 栈失效并会出现系统凝固现象即不响应键盘和鼠标。普通防火墙大多无法抵御此种攻击。 TCP 全连接攻击 这种攻击是为了绕过常规防火墙的检查而设计的一般情况下常规防火墙大多具备过滤 T earDrop、Land 等 DOS 攻击的能力但对于正常的 TCP 连接是放过的殊不知很多网络服务程序(如IIS、Apache 等 W eb 服务器)能接受的 TCP 连接数是有限的一旦有大量的 TCP 连接即便是正常的也会导致网站访问非常缓慢甚至无法访问TCP 全连接攻击就是通过许多僵尸主机不断地与受害服务器建立大量的 TCP 连接直到服务器的内存等资源被耗尽而被拖跨 从而造成拒绝服务 这种攻击的特点是可绕过一般防火墙的防护而达到攻击目的缺点是需要找很多僵尸主机并且由于僵尸主机的 IP 是暴露的因此容易被追踪。 刷脚本攻击 这种攻击主要是针对存在 ASP、JSP、PHP、CGI 等脚本程序并调用 MSSQLServer、MySQLServer、Oracle 等数据库的网站系统而设计的特征是和服务器建立正常的 TCP 连接 并不断的向脚本程序提交查询、 列表等大量耗费数据库资源的调用 一般来说 提交一个 GET 或 POST 指令对客户端的耗费和带宽的占用是几乎可以忽略的而服务器为处理此请求却可能要从上万条记录中去查出某个记录 这种处理过程对资源的耗费是很大的 常见的数据库服务器很少能支持数百个查询指令同时执行而这对于客户端来说却是轻而易举的 因此攻击者只需通过 Proxy 代理向主机服务器大量递交查询指令 只需数分钟就会把服务器资源消耗掉而导致拒绝服务常见的现象就是网站慢如蜗牛、ASP 程序失效、PHP 连接数据库失败、数据库主程序占用 CPU 偏高。这种攻击的特点是可以完全绕过普通的防火墙防护 轻松找一些 Proxy 代理就可实施攻击 缺点是对付只有静态页面的网站效果会大打折扣并且有些 Proxy 会暴露攻击者的 IP 地址。
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