Oct 16, 2017

DNS Lookups Explained - Steve May 12, 2019 DNS Resolution | Nmap Network Scanning Since DNS can be slow even with Nmap's built-in parallel stub resolver, this option reduces scanning times.-R (DNS resolution for all targets) Tells Nmap to always do reverse DNS resolution on the target IP addresses. Normally reverse DNS is only performed against responsive (online) hosts. Using dns-prefetch - Web Performance | MDN

DNS contains a number of record types that facilitate other applications. The Mail Exchanger (MX) record, for example, provides mail servers with the information required to forward e-mail messages to the recipient’s e-mail server. Another type of record, the service (SVC) record, is used by Microsoft Active Directory to locate network

Introduction to DNS Figure 5.1 Domain Name System Each node in the DNS tree represents a DNS name. Some examples of DNS names are DNS domains, computers, and services. A DNS domain is a branch under the node. For example, in Figure 5.1, reskit.com is a DNS domain. DNS domains can contain both hosts (computers or services) and other domains (referred to as subdomains

Aug 12, 2014

dnscmd | Microsoft Docs Oct 16, 2017 CNAME record - Wikipedia A Canonical Name record (abbreviated as CNAME record) is a type of resource record in the Domain Name System (DNS) which maps one domain name (an alias) to another (the canonical name).. This can prove convenient when running multiple services (like an FTP server and a web server, each running on different ports) from a single IP address.One can, for example, point ftp.example.com and www DNS Zones Explained DNS servers can be deployed in a master/slave topology, where a secondary DNS server holds a read-only copy of the primary DNS server’s DNS records. The primary server holds the master zone file, and the secondary server constitutes an identical secondary zone ; DNS requests are distributed between primary and secondary servers.