发布者：售前小志 | 本文章发表于：2021-07-20 阅读数：2116
随着Internet互联网络带宽的增加和多种DDOS黑客工具的不断发布，DDOS拒绝服务攻击的实施越来越容易，DDOS攻击事件正在成上升趋势。出于商业竞争、打击报复和网络敲诈等多种因素，导致很多IDC托管机房、商业站点、游戏服务器、聊天网络等网络服务商长期以来一直被DDOS攻击所困扰，随之而来的是客户投诉、同虚拟主机用户受牵连、法律纠纷、商业损失等一系列问题，因此，解决DDOS攻击问题成为网络服务商必须考虑的头等大事。
DDOS是英文Distributed Denial of Service的缩写，意即“分布式拒绝服务”，那么什么又是拒绝服务(Denial of Service)呢?可以这么理解，凡是能导致合法用户不能够访问正常网络服务的行为都算是拒绝服务攻击。也就是说拒绝服务攻击的目的非常明确，就是要阻止合法用户对正常网络资源的访问，从而达成攻击者不可告人的目的。虽然同样是拒绝服务攻击，但是DDOS和DOS还是有所不同，DDOS的攻击策略侧重于通过很多“僵尸主机”(被攻击者入侵过或可间接利用的主机)向受害主机发送大量看似合法的网络包，从而造成网络阻塞或服务器资源耗尽而导致拒绝服务，分布式拒绝服务攻击一旦被实施，攻击网络包就会犹如洪水般涌向受害主机，从而把合法用户的网络包淹没，导致合法用户无法正常访问服务器的网络资源，因此，拒绝服务攻击又被称之为“洪水式攻击”，常见的DDOS攻击手段有SYN Flood、ACK Flood、UDP Flood、ICMP Flood、TCP Flood、Connections Flood、Script Flood、Proxy Flood等;而DOS则侧重于通过对主机特定漏洞的利用攻击导致网络栈失效、系统崩溃、主机死机而无法提供正常的网络服务功能，从而造成拒绝服务，常见的DOS攻击手段有TearDrop、Land、Jolt、IGMP Nuker、Boink、Smurf、Bonk、OOB等。就这两种拒绝服务攻击而言，危害较大的主要是DDOS攻击，原因是很难防范，至于DOS攻击，通过给主机服务器打补丁或安装防火墙软件就可以很好地防范，后文会详细介绍怎么对付DDOS攻击。
快快网络扬州多线BGP机房高配可用区，该系列全部采购定制级I9高配，针对高性能计算应用领域，单核心计算性能达到传统服务器的1.5倍，适合金融，游戏等高负载应用。
搭配全新升级的清洗级IP段，T级防护，保证你的游戏高效稳定运行。
详情小志QQ537013909
https://www.kkidc.com/zuyong/yangzhoubgp/gaopei/
DDOS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。
如何判断网站是否遭受了流量攻击呢?可通过Ping命令来测试，若发现Ping超时或丢包严重(假定平时是正常的)，则可能遭受了流量攻击，此时若发现和你的主机接在同一交换机上的服务器也访问不了了，基本可以确定是遭受了流量攻击。当然，这样测试的前提是你到服务器主机之间的ICMP协议没有被路由器和防火墙等设备屏蔽，否则可采取Telnet主机服务器的网络服务端口来测试，效果是一样的。不过有一点可以肯定，假如平时Ping你的主机服务器和接在同一交换机上的主机服务器都是正常的，突然都Ping不通了或者是严重丢包，那么假如可以排除网络故障因素的话则肯定是遭受了流量攻击，再一个流量攻击的典型现象是，一旦遭受流量攻击，会发现用远程终端连接网站服务器会失败。
相对于流量攻击而言，资源耗尽攻击要容易判断一些，假如平时Ping网站主机和访问网站都是正常的，发现突然网站访问非常缓慢或无法访问了，而Ping还可以Ping通，则很可能遭受了资源耗尽攻击，此时若在服务器上用Netstat -na命令观察到有大量的SYN_RECEIVED、TIME_WAIT、FIN_WAIT_1等状态存在，而ESTABLISHED很少，则可判定肯定是遭受了资源耗尽攻击。还有一种属于资源耗尽攻击的现象是，Ping自己的网站主机Ping不通或者是丢包严重，而Ping与自己的主机在同一交换机上的服务器则正常，造成这种原因是网站主机遭受攻击后导致系统内核或某些应用程序CPU利用率达到100%无法回应Ping命令，其实带宽还是有的，否则就Ping不通接在同一交换机上的主机了。
清洗防御首选扬州BGP，快快网络朵儿推荐
流量清洗，全面防御DDOS攻击，扬州BGP清洗运营商省出口搭载清洗功能，具有源头清洗，上层清洗，识别清洗等多重功能，对于世面70%的特定攻击种类可能会直接清洗掉，大防御才能补足现时代大攻击所造成的不足。每日小tips，https网站打不开可能是由多种原因引起的。第一种，可能是SSL证书安装不正确，需要重新安装。如果https网站打不开，很大一部分原因是由于SSL证书出现问题，建议重新安装。忽略证书警告并继续访问网站，然后单击地址栏后面的“证书错误”按钮打开弹出窗口，单击“查看证书”，然后单击“安装证书”。如果在此过程中SSL证书安装失败，则需要重置计算机的日期时间，清空浏览器中的临时文件。第二种，网站没有被添加为信任网站。当https网站打不开，可能是由https错误引起的，建议将网站添加为信任网站。具体操作方法是点击“工具”菜单中的“Internet”选项，选择“安全”，然后点击“可信站点”，再点击“站点”按钮，然后在“将该网站添加到区域”文本框中输入出现提示“此网站的安全证书有问题”的网站地址，随后进行添加即可。第三种，浏览器的问题，需要将Internet选项改成SSL2.0和SSL3.0。当https网站打不开，可能是浏览器的设置有问题。需要在浏览器中选择“工具”选项，然后选择Internet选项，在高级设置中，选择“使用SSL2.0”和“使用SSL3.0”.联系专属售前：快快网络朵儿，QQ：537013900
扬州BGP封国外103.216.155.1
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BGP高防服务器是什么？要怎么选？
随着互联网的不断发展，服务器逐渐成为必不可少的一环，很多厂商相继推出了单线路机房、多线路机房和BGP机房的相关产品，尤其是BGP机房受到极大的关注。随之而来的也有很多的网络安全问题，比如DDoS攻击等。这个时候，BGP高防服务器就成为大家重点选择的对象。那么，BGP高防服务器是什么？要怎么选？小编今天来给您细细讲解。BGP高防服务器是什么？首先我们先解释下什么是BGP服务器？BGP服务器指的是边界网关协议(BGP)是一种路由协议，用于在不同的主机网关，Internet或自治系统之间传输数据和信息。BGP是路径向量协议(PVP)，它维护到不同主机，网络和网关路由器的路径，并根据它确定路由决策。简单来讲就是将电信、联通、联通等线路都接入到机房中，然后在通过BGP互联技术将不同的线路进行融合，实现多线路单IP，可以根据客户的情况智能切换网络线路。BGP高防服务器是在BGP服务器的基础上，自身加上防御功能，能够很好地防御DDoS攻击、CC攻击等，在防御范围内很好地保护服务器，防止被攻击宕机。现在各大厂商都在主推BGP高防服务器，商品琳琅满目，要怎么选呢？首先我们要根据自己的业务类型选择对应的防御上限值，这样可以保障我们的业务安全稳定；其次是要选择合适的带宽，防止客户访问高峰期时出现卡顿的情况。快快网络为大家提供了多个BGP高防服务器机房，每个机房都有对应的服务器配置、防御、带宽供大家选择，能够满足游戏、商城、直播等各大业务需求。BGP高防服务器是什么？要怎么选？上述就是小编为大家整理的细节点。详询快快网络舟舟（QQ：177803618），快快网络为您的网络安全保驾护航！
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发布者：售前小志 | 本文章发表于：2021-07-20
随着Internet互联网络带宽的增加和多种DDOS黑客工具的不断发布，DDOS拒绝服务攻击的实施越来越容易，DDOS攻击事件正在成上升趋势。出于商业竞争、打击报复和网络敲诈等多种因素，导致很多IDC托管机房、商业站点、游戏服务器、聊天网络等网络服务商长期以来一直被DDOS攻击所困扰，随之而来的是客户投诉、同虚拟主机用户受牵连、法律纠纷、商业损失等一系列问题，因此，解决DDOS攻击问题成为网络服务商必须考虑的头等大事。
DDOS是英文Distributed Denial of Service的缩写，意即“分布式拒绝服务”，那么什么又是拒绝服务(Denial of Service)呢?可以这么理解，凡是能导致合法用户不能够访问正常网络服务的行为都算是拒绝服务攻击。也就是说拒绝服务攻击的目的非常明确，就是要阻止合法用户对正常网络资源的访问，从而达成攻击者不可告人的目的。虽然同样是拒绝服务攻击，但是DDOS和DOS还是有所不同，DDOS的攻击策略侧重于通过很多“僵尸主机”(被攻击者入侵过或可间接利用的主机)向受害主机发送大量看似合法的网络包，从而造成网络阻塞或服务器资源耗尽而导致拒绝服务，分布式拒绝服务攻击一旦被实施，攻击网络包就会犹如洪水般涌向受害主机，从而把合法用户的网络包淹没，导致合法用户无法正常访问服务器的网络资源，因此，拒绝服务攻击又被称之为“洪水式攻击”，常见的DDOS攻击手段有SYN Flood、ACK Flood、UDP Flood、ICMP Flood、TCP Flood、Connections Flood、Script Flood、Proxy Flood等;而DOS则侧重于通过对主机特定漏洞的利用攻击导致网络栈失效、系统崩溃、主机死机而无法提供正常的网络服务功能，从而造成拒绝服务，常见的DOS攻击手段有TearDrop、Land、Jolt、IGMP Nuker、Boink、Smurf、Bonk、OOB等。就这两种拒绝服务攻击而言，危害较大的主要是DDOS攻击，原因是很难防范，至于DOS攻击，通过给主机服务器打补丁或安装防火墙软件就可以很好地防范，后文会详细介绍怎么对付DDOS攻击。
快快网络扬州多线BGP机房高配可用区，该系列全部采购定制级I9高配，针对高性能计算应用领域，单核心计算性能达到传统服务器的1.5倍，适合金融，游戏等高负载应用。
搭配全新升级的清洗级IP段，T级防护，保证你的游戏高效稳定运行。
详情小志QQ537013909
https://www.kkidc.com/zuyong/yangzhoubgp/gaopei/
DDOS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。
如何判断网站是否遭受了流量攻击呢?可通过Ping命令来测试，若发现Ping超时或丢包严重(假定平时是正常的)，则可能遭受了流量攻击，此时若发现和你的主机接在同一交换机上的服务器也访问不了了，基本可以确定是遭受了流量攻击。当然，这样测试的前提是你到服务器主机之间的ICMP协议没有被路由器和防火墙等设备屏蔽，否则可采取Telnet主机服务器的网络服务端口来测试，效果是一样的。不过有一点可以肯定，假如平时Ping你的主机服务器和接在同一交换机上的主机服务器都是正常的，突然都Ping不通了或者是严重丢包，那么假如可以排除网络故障因素的话则肯定是遭受了流量攻击，再一个流量攻击的典型现象是，一旦遭受流量攻击，会发现用远程终端连接网站服务器会失败。
相对于流量攻击而言，资源耗尽攻击要容易判断一些，假如平时Ping网站主机和访问网站都是正常的，发现突然网站访问非常缓慢或无法访问了，而Ping还可以Ping通，则很可能遭受了资源耗尽攻击，此时若在服务器上用Netstat -na命令观察到有大量的SYN_RECEIVED、TIME_WAIT、FIN_WAIT_1等状态存在，而ESTABLISHED很少，则可判定肯定是遭受了资源耗尽攻击。还有一种属于资源耗尽攻击的现象是，Ping自己的网站主机Ping不通或者是丢包严重，而Ping与自己的主机在同一交换机上的服务器则正常，造成这种原因是网站主机遭受攻击后导致系统内核或某些应用程序CPU利用率达到100%无法回应Ping命令，其实带宽还是有的，否则就Ping不通接在同一交换机上的主机了。
清洗防御首选扬州BGP，快快网络朵儿推荐
流量清洗，全面防御DDOS攻击，扬州BGP清洗运营商省出口搭载清洗功能，具有源头清洗，上层清洗，识别清洗等多重功能，对于世面70%的特定攻击种类可能会直接清洗掉，大防御才能补足现时代大攻击所造成的不足。每日小tips，https网站打不开可能是由多种原因引起的。第一种，可能是SSL证书安装不正确，需要重新安装。如果https网站打不开，很大一部分原因是由于SSL证书出现问题，建议重新安装。忽略证书警告并继续访问网站，然后单击地址栏后面的“证书错误”按钮打开弹出窗口，单击“查看证书”，然后单击“安装证书”。如果在此过程中SSL证书安装失败，则需要重置计算机的日期时间，清空浏览器中的临时文件。第二种，网站没有被添加为信任网站。当https网站打不开，可能是由https错误引起的，建议将网站添加为信任网站。具体操作方法是点击“工具”菜单中的“Internet”选项，选择“安全”，然后点击“可信站点”，再点击“站点”按钮，然后在“将该网站添加到区域”文本框中输入出现提示“此网站的安全证书有问题”的网站地址，随后进行添加即可。第三种，浏览器的问题，需要将Internet选项改成SSL2.0和SSL3.0。当https网站打不开，可能是浏览器的设置有问题。需要在浏览器中选择“工具”选项，然后选择Internet选项，在高级设置中，选择“使用SSL2.0”和“使用SSL3.0”.联系专属售前：快快网络朵儿，QQ：537013900
扬州BGP封国外103.216.155.1
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BGP高防服务器是什么？要怎么选？
随着互联网的不断发展，服务器逐渐成为必不可少的一环，很多厂商相继推出了单线路机房、多线路机房和BGP机房的相关产品，尤其是BGP机房受到极大的关注。随之而来的也有很多的网络安全问题，比如DDoS攻击等。这个时候，BGP高防服务器就成为大家重点选择的对象。那么，BGP高防服务器是什么？要怎么选？小编今天来给您细细讲解。BGP高防服务器是什么？首先我们先解释下什么是BGP服务器？BGP服务器指的是边界网关协议(BGP)是一种路由协议，用于在不同的主机网关，Internet或自治系统之间传输数据和信息。BGP是路径向量协议(PVP)，它维护到不同主机，网络和网关路由器的路径，并根据它确定路由决策。简单来讲就是将电信、联通、联通等线路都接入到机房中，然后在通过BGP互联技术将不同的线路进行融合，实现多线路单IP，可以根据客户的情况智能切换网络线路。BGP高防服务器是在BGP服务器的基础上，自身加上防御功能，能够很好地防御DDoS攻击、CC攻击等，在防御范围内很好地保护服务器，防止被攻击宕机。现在各大厂商都在主推BGP高防服务器，商品琳琅满目，要怎么选呢？首先我们要根据自己的业务类型选择对应的防御上限值，这样可以保障我们的业务安全稳定；其次是要选择合适的带宽，防止客户访问高峰期时出现卡顿的情况。快快网络为大家提供了多个BGP高防服务器机房，每个机房都有对应的服务器配置、防御、带宽供大家选择，能够满足游戏、商城、直播等各大业务需求。BGP高防服务器是什么？要怎么选？上述就是小编为大家整理的细节点。详询快快网络舟舟（QQ：177803618），快快网络为您的网络安全保驾护航！
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