check dns port

Originally transferred from http://hi.baidu.com/shyoung/blog/item/b0ccff03fd462481d43f7c5a.html The complete DNS System of the DNS component consists of the DNS server, region, Parser (DNS client), and resource records, and you need to correctly

This article mainly refers to from: http://369369.blog.51cto.com/319630/812889 and made a small change What is DNS. Hosts on the internet, like humans, can be identified in a variety of ways. A host's identification method is to use its host name

1. What is DNS? (Domain Name System) domain name system. In fact, the functions implemented by DNS are very simple and effective, so that users do not need to remember the IP addresses that frequently access the server, you can directly access the

Many people do not know how to resolve public domain names on their own DNS servers. Now let's announce the steps. 1. You must have your own domain name. Therefore, go to the domain name registrar to apply for a registered domain name. Try to find a

The computer ports are as follows: 0 Port: Invalid port, typically used to analyze operating system 1 Port: Transmission Control Protocol port Service multi-Switch Selector 2 Port: Management utility 3 Port: Compression process 5 Port: Remote

Source: http://book.51cto.com/art/200801/64743.htm Http://www.xxeb.com/site/domain/20070314/23.html Author: Release Date:   When the DNS client needs to query the name used in the program, it queries the DNS server to resolve the name. Each query

"The main content of this blog post" Introduction to bind server (including Introduction to Client Tools Dig) Configuring forward parsing DNS servers Configure Reverse resolution DNS server Configuring a secondary DNS server and

What is DNS Domain Name System (DNS) is an English abbreviation of "Domain Name System". It is a computer and network service naming System organized into a Domain hierarchy. It is used for TCP/IP networks, it is mainly used to replace the boring

With the gradual popularization of networks, network security has become the focus of the INTERNET. It is related to the further development and popularization of the INTERNET, and even to the survival of the INTERNET. Fortunately, our INTERNET

Set up DNS service on CentOS 7 Document Description: This document uses a case study to deploy DNS services on CentOS 7. This case is only a summary of my knowledge about how to deploy the DNS service. It is not a case in the production environment.