dns query

Recently, I am preparing to put domain name resolution on a free DNS server outside China. To track the domain name resolution process, nslookup in Windows is too simple. It is not as good as the dig command in Linux. Find the dig Command Used in

Install DNS ServerInstall DNS ServerI believe that everyone familiar with the Internet should know the role of DNS server. DNS is closely related to our daily online life.DNS: (Domain NameService) as its name implies, is a Domain name resolution

The application layer of Computer Network 1. Introduction The application layer serves as the highest level of interaction with users, and its tasks directly serve users' application processes. The specific content of the application layer is the

Policy requirements:1. Internet access to Email, DNS, and Web servers in the DMZ Region2. The Internet cannot access the internal network.3. The internal Email server can only access the DMZ Email server, but cannot access other devices.4. the DMZ

UPnP protocol learning note-Addressing is step 1 of UPnP network connection. IP addresses are obtained through Addressing, device, and control points. The UPnP Device and control point can only support IPv4, IPv4, and IPv6 at the same time. For each

Using dnsmasq to build a small Intranet DNS dnsmasq is a very small dns server that can solve small-scale dns query problems, such as the Intranet of the IDC. The general idea of www.2cto.com is as follows: Configure dnsmasq as the DNS Cache Server

Although the speed of ADSL has been greatly improved, with the improvement of network standards and user requirements, the current speed still cannot meet our needs. So now we will introduce the knowledge of the ADSL acceleration method. ADSL

What is the working principle of HTTP? How to optimize the HTTP protocol ?, Protocol Working Principle Optimization made by http1.0 Bandwidth: latency has been solved at this stage: 1. browser blocking: the browser can only connect to the same

IIS, an Internet Information Server that comes with Windows Server, is a common tool for setting up website servers. It is simple and troublesome, new users can use the IIS server to set up a decent Web site. However, it is not easy to configure and

Php asynchronous multi-thread swoole usage example, multi-thread swoole This example describes the usage of php asynchronous multi-thread swoole. Share it with you for your reference. The specific analysis is as follows: Swoole redefined the

1. Browser query cache, if there is a cache, skip to step 9th2. The browser asks the operating system server IP3. The operating system does DNS query, return the IP address to the browser4. The browser opens a TCP connection to the server (more

Notes for BIND in LINUX-Linux Enterprise Application-Linux server application information. For details, refer to the following section. BIND default settings /Etc/named. conf -- set the file /Etc/sysconfig/named -- whether to start chroot and

This article mainly introduces the usage of php asynchronous multi-thread swoole, and describes the asynchronous multi-thread feature of swoole in the form of an instance. For more information, see This article mainly introduces the usage of php

Status Code meaning 100 The client should continue to send the request. This temporary response is used to inform the client that some of its requests have been received by the server and are still not rejected. The client

　　Status code meaning100 the client should continue to send the request. This temporary response is used to inform the client that some of its requests have been received by the server and are still not rejected. The client should continue to send

Status Code meaning 100 The client should continue to send the request. This temporary response is used to inform the client that some of its requests have been received by the server and are still not rejected. The client

1 definition edits The first number of all status codes represents one of the five states of the response.2 message (1-word header) edit This type of status code, on behalf of which the request has been accepted, needs to be processed. This type

Note on successful DNS configuration-Linux Enterprise Application-Linux server application information. See the following for details. > 1) create a domain name www.yaoshuyin123.com 2) IP address of the Local Domain Name Server: 192.168.0.101 3)

Article Title: DNS resolution process. 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. When the DNS client

Article Title: Principles of the mail system. 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. What is an email