4.4.8.8.in-addr.arpa name = google-public-dns-b.google.com. Authoritative answers can be found from: zhouhh@zhhofs:~$ nslookup4.4.4.4 Server:8.8.8.8 Address:8.8.8.8#53 ** server can't find4.4.4.4.in-addr.arpa.: NXDOMAIN zhouhh@zhhofs:~$ nslookup4.3.2.1 Server:8.8.8.8 Address:8.8...
The authoritative nameserver contains information specific to the domain name it serves (e.g. google.com) and it can provide a recursive resolver with the IP address of that server found in the DNS A record, or if the domain has a CNAME record (alias) it will provide the recursive ...
7、DNS资源记录: SOA 资源记录(全区唯一)每个区在区的开始处都包含了一个起始授权记录(Start of Authority Record),简称SOA 记录. SOA 定义了域的全局参数,进行整个域的管理设置.一个区域文件只允许存在唯一的SOA 记录. NS 资源记录:NS(Name Server)记录是域名服务器记录,用来指定该域名由哪个DNS服务器来进行解...
四、DNS的查询过程 DNS采用两种查询机制:递归和迭代。 客户端向DNS服务器发起查询请求,DNS服务器搜索本地解析库没有结果,于是向根域发起查询请求,根域告诉DNS服务器.com服务器上有它需要的 资源,DNS服务器又向.com服务器发起查询请求,结果被告知.google.com服务器上有它想要的结果,最后终于在.google.com服务器 ...
SOA:Start Of Authority,起始授权记录;一个区域解析库有且仅能有一个SOA记录,必须位于解析库的第一条记录 A:internet Address,作用,FQDN --> IP AAAA:FQDN --> IPv6 PTR:PoinTeR,IP --> FQDN NS:Name Server,专用于标明当前区域的DNS服务器 CNAME : Canonical Name,别名记录 MX:Mail eXchanger,邮件交换器...
NS(Name Server)记录是域名服务器记录,用来指定该域名由哪个DNS服务器来进行解析。每个区在区根处至少包含一个NS 记录。 例:magedu.com. IN NS ns1.magedu.com. 注意:(1) 相邻的两个资源记录的name相同时,后续的可省略 (2) 对NS记录而言,任何一个ns记录后面的服务器名字,都应该在后续有一个A记录 ...
What's the difference between an authoritative DNS server and a recursive DNS resolver? Both concepts refer to servers (groups of servers) that are integral to the DNS infrastructure, but each performs a different role and lives in different locations inside the pipeline of a DNS query. One wa...
Hostwinds offers options to manage DNS records for purchased domains or for DNS records that need to be managed in your Hostwinds Cloud Portal to point to your server. The nameservers we provide with your service control where your DNS records are managed. Let's provide a couple of example...
Optionally, configure forwarder DNS server IP addresses or URLs in DNS Settings so that the DNS Server uses them to resolve requests instead of doing recursive resolution by itself. You may configure any public DNS server like Google DNS, Cloudflare DNS or OpenDNS. ...
servers. Like KubeDNS, it retrieves a list of resources (Services, Ingresses, etc.) from theKubernetes APIto determine a desired list of DNS records.UnlikeKubeDNS, however, it's not a DNS server itself, but merely configures other DNS providers accordingly—e.g.AWS Route 53orGoogle Cloud...