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：2022-02-16 17:24:01
1.域名过期没有及时续费2.域名未通过实名认证3.域名状态出现异常Pending delete（域名过期，赎回期）Clienthold（暂停解析）Inactive（未设置 DNS）二、解析设置问题如果在进行多线解析时没有设置默认解析线路，也会出现解析不生效或者无法访问的问题。所以这种情况下.........【阅读全文】
发布时间：2022-02-11 16:48:56
DNS解析是将域名指向解析成可由计算机直接识别的IP，从而完成服务器的访问。DNS解析出现错误，就是无法解析域名，或者将域名指向一个错误的IP，导致用户无法通过域名正常访问相应站点。出现DNS解析故障最大的症状就是访问站点对应的IP没有问题，然而访问他的域名就会出现错误。导致DNS解析出现故障的原因有很多种，如解析设.........【阅读全文】
发布时间：2022-01-27 15:00:04
“防火墙”一词起源于建筑领域，用来隔离火灾，阻止火势从一个区域蔓延到另一个区域。引入到通信领域，防火墙这一具体设备通常用于两个网络之间有针对性的、逻辑意义上的隔离。当然，这种隔离是高明的，隔离的是“火”的蔓延，而又保证“人”的穿墙而过。这里的“火”是指网络中的各种攻击，而“人”是指正常的通信报文。.........【阅读全文】
发布时间：2022-01-26 14:21:29
什么是HTTP？HTTP协议有哪些风险？由于 HTTP 本身是明文传输，用户和服务端之间的传输内容都能被中间者查看。也就是说你在网上搜索、购物、访问的网点、点击的页面等信息，都可以被「中间人」获取。隐私泄露的风险比较隐蔽，用户基本感知不到。但另外一类劫持的影响就非常明显非常直接了——页面劫持，也就是.........【阅读全文】
发布时间：2022-01-21 14:54:43
在实际的DNS解析过程中，用户请求某个网站，浏览器首先会查找本机中的DNS缓存，如果DNS缓存中记录了该网站和IP的映射关系，就会直接将结果返回给用户，用户对所得的IP地址发起访问。如果缓存中没有相关记录，才会委托递归服务器发起递归查询。如果攻击者通过控制用户的主机或者使用恶意软件攻击用户的DNS.........【阅读全文】
JVDLFFLR2025-08-03 17:15
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