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：2023-05-19 17:51:49
域名解析对网站访问的影响我们以访问12306.cn为例，简单介绍下域名解析的原理和流程。当请求主机发起12306.cn的访问，会首先请求本地域名服务器，随后本地域名服务器依次询问根域名服务器、cn顶级域名服务器，最后从负责12306.cn解析的权威域名服务器处得到解析结果。本地域名服务器将解析结果告知请求主机，请求主机.........【阅读全文】
发布时间：2023-05-15 16:12:27
基于这种背景，人们在IP地址的基础上又发展出了一种更易识别的符号化标识，这种标识由人们自行选择的字母和数字构成，相比IP地址更易被识别和记忆，逐渐代替IP地址成为互联网用户进行访问互联的主要入口。这种符号化标识就是域名。域名虽然更易被用户所接受和使用，但计算机只能识别纯数字构成的IP地址，不能直接读取域.........【阅读全文】
发布时间：2023-05-11 17:22:59
DHCP前身是BOOTP协议，DHCP协议由RFC2131定义，采用客户端/服务器通信模式，由DHCP客户端向服务器提出IP申请，然后由DHCP服务器为网络上每一台设备动态分配IP地址、子网掩码、DNS地址等IP资源。DHCP采用客户端/服务器模式，网络管理员建立一个或多个DHCP服务器，在这些服务器中保存了可以提供给客户端的TCP/IP 配置信.........【阅读全文】
发布时间：2023-05-09 17:29:46
近年来，国内外发生了多起针对DNS安全的攻击事件：2013年，国家域名解析节点受到DNS拒绝服务攻击，导致.cn的部分网站无法打开，造成了非常恶劣的影响。（1）DNS DDoS攻击DNS query Flooding是利用众多僵尸网络同时对域名服务器发送大量查询报文，从而导致DNS服务器瘫痪，无法响应正常解析请求，进而影响更多.........【阅读全文】
发布时间：2023-05-08 14:32:04
域名后缀大致可以分为三类，一类是通用顶级域名（gTLD），一类是国别域名（ccTLD），还有一类是新通用顶级域名 NEW gTLD。下面，我们针对这三种不同的域名后缀做下介绍。通用顶级域名（gTLD），是最早被批准的顶级域名，这类域名后缀数量不多，一共只有二十几种。net：原用于提供网络服务和产品的组织采用，现用.........【阅读全文】
JVDLFFLR2025-08-03 17:15
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