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 ...
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 ...
ServerAddress AllowFallbackToUdp AutoUpgrade DohTemplate --- --- --- --- 149.112.112.112 False False https://dns.quad9.net/dns-query 9.9.9.9 False False https://dns.quad9.net/dns-query 8.8.8.8 False False https://dns.google/dns-query 8.8.4.4 False False https://dns.google/dns-que...
Google is also a key player in addressing DNS security. A standard attack trajectory is to intercept a DNS server in order to redirect the path of web pages to malicious servers from authentic ones. Google records trials to be resilient against DNS server spikes, including the ‘denial of ser...
> server8.8.8.8 Default server:8.8.8.8 Address:8.8.8.8#53 > set type=a > google.com Server:8.8.8.8 Address:8.8.8.8#53 Non-authoritative answer: Name: google.com Address:74.125.53.100 Name: google.com Address:74.125.67.100 Name: google.com ...
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 ...
Use public DNS resolvers like Cloudflare, Google, Quad9, and AdGuard with DNS-over-TLS, DNS-over-HTTPS, or DNS-over-QUIC protocols as forwarders. Support for latency based name server selection algorithm that works with concurrency feature for both recursive resolution and forwarders. Advanced cac...
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...
Deep Dive: What Is A DNS Server? A DNS server is a computer that has a database full of public IP addresses and the domain names of the websites to which they link. In other words, a DNS server is like a gigantic phone book where you “look up” an IP address. This happens when...
Technitium DNS Server 相比 AdGuard Home 的好处就是支持作为递归 DNS 解析器，也就是不用配置上游，...