国科云提供域名管理、域名锁、智能解析、DDI、IPv6转换、SSL证书等一站式域名解决方案，并形成以云解析、云监控、云盾、云服务器为核心的云计算产品服务体系。
发布时间：2022-11-03 16:27:57
传统的DNS解析，在收到解析请求时，并不会判断访问者来源，而是会返回一个固定的IP地址或者随机选择一个IP地址返回给访问者，这样容易产生较高的延时或造成线路的拥堵。而智能解析，可以智能判断访问者来源，并为其匹配不同的IP地址，这样就能够减少解析时延，提升网站访问速度。我们以域名www.example.com为例，它有.........【阅读全文】
发布时间：2022-11-02 16:23:20
而网站不能访问除了和域名解析相关外，还可能受网站服务器、网站备案、网站程序、网络环境等多方面因素的影响。所以网站不能访问并不代表一定是域名解析不生效。1.检查域名是否过期2.检查域名状态3.确认是否修改过DNS服务器4.检查解析记录配置是否正确（1）登陆域名解析控制台，在域名解析列表，检查.........【阅读全文】
发布时间：2022-10-31 16:30:06
网络地址转换－协议转换技术NAT-PT机制可分为三种不同的类型实现IPv4到IPv6的转换，分别是静态映射的NAT-PT机制、动态映射的NAT-PT机制和NAPT-PT机制。动态映射的NAT-PT中的IPv4和IPv6地址池也是一对一映射的，但它是通过一个IPv4地址池来实现的，IPv4地址池的地址数量决定了可转换IPv6的最大数量，即外部访问时.........【阅读全文】
发布时间：2022-10-31 15:27:32
隧道技术（Tunneling）隧道技术的实现的形式主要有：IPv6 over IPv4隧道（构造隧道），自动配置隧道和6 to 4。IPv6 over IPv4隧道的基本原理如下图（图1， IPv6 over IPv4隧道技术），在隧道的入口和出口处分别由Dual Stack Router连接IPv6网络和IPv4网络，隧道起点的IPv4地址必须手动配置，即将IPv6的数据包作为.........【阅读全文】
发布时间：2022-10-28 15:04:52
一、双协议栈（Dual Stack)双栈技术是IPv4到IPv6过渡的基础，双协议栈技术指在同一台设备上同时支持IPv4和IPv6协议栈，实现分别与IPv4或IPv6节点间的信息互通。IPv6和IPv4是功能相近的网络协议层，在传输过程中基于传输层的TCP/UDP基本没有区别，其基本的工作方式包含接收数据包和发送数据包，具体的访问流程如下图所.........【阅读全文】
JVDLFFLR2025-08-03 17:15
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