dig reverse lookup

Common options:-B: When the host has multiple IP addresses, specify which IP address to use to send Domain name query requests to the domain name server;-f-P: Specifies the port number used by the domain name server;-t-X: Perform reverse domain name

DNS is one of the core Internet protocols. Whether it's surfing the web or programming, you need to know a little bit about it.This article describes in detail The principle of DNS and how to use the tool software to observe its operation. My goal

Write in front of the nonsense: recently to give some new training, sorting things, not what too high-end content, just a simple collation, I think for small white words also is dry. In the dark cloud water for a few years, not what big God level,

The target audience of this article is the server administrator, website administrator, security enthusiast, and professional information security personnel. It mainly analyzes the risks of a host server. Let's take a look at some reasons why your

Domain Registration InformationWhen you know the target domain name, the first thing you have to do is to query the domain name registration information through the Whoist database, whois database is to provide the domain name registrant information,

When conducting a security penetration test, we first need to collect as much information as possible for the target application. Therefore, information collection is an essential step for penetration testing. This task can be completed in different

Article Title: LinuxDNS server troubleshooting. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Currently,

ConceptDefault dns lookup sequence for linux clients: Local DNS Cache → local hosts file → preferred DNS server (recursive) Linux DNS Server Query sequence:The DNS cache of the preferred server → the domain in which the preferred server is

1. Problems with the mysql+memcached architecture The actual MySQL is suitable carries on the massive data storage, through memcached hot spot data loading to the cache, speeds up the visit, many companies have used this kind of architecture, but

What is the nature of DNS? Domain Name System = DNS (domain name systems) is actually a database, is a distributed database for TCP/IP programs, and is also an important network protocol. DNS stores information about IP addresses and corresponding