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DNS Series two: Build a DNS server

Before you build a DNS server, introduce the terminology in several DNS 1, forward lookup zone: mapping for Computer name to IP address. When a DNS client initiates a request to a DNS server to resolve the IP address of a computer name, the DNS server looks in the forward l

Uncover DNS background files: DNS series of five

In the previous blog, we introduced the architecture of DNS, the common records, also introduced the configuration of the secondary server, today we will introduce some of the files behind the DNS server. In fact, the work of the DNS server relies on these files, understand the background files of DNS, to better unders

DNS server Configuration practices under Linux (ii)-Configure DNS from the server

"Experimental description"Experimental environment: Add a server ns2.test.com, IP 192.168.0.112;Experimental purpose: The new server is configured to 192.168.0.111 this primary DNS server from the DNS server;" conditions for implementing master-Slave Synchronization"1, the master-slave server time must be synchronized, using NTP and time server periodic synchronization time;[Email protected] ~]# vim/etc/cro

When the DNS server performs the NSLookup test, the DNS timeout 2 seconds error message is displayed.

Recently, my colleague reported that during the NSLookup test on the Intranet, I found that when I used the Intranet DNS server 192.168.1.1 for resolution, the DNS server responded very quickly and did not Any errors. However, when the DMZ server 51.144.198.99 is used for testing, the system always prompts that the request times out and returns the correct resolution. We suspect that the firewall we are usi

Linux-dns Services-configuration of secondary DNS servers (bottom)

Secondary DNS server configuration******************The purpose of the secondary server: First, as a backup of the primary DNS server, the second is to share the load of the primary DNS server.The configuration of a secondary DNS server is relatively straightforward, because its zone database files are periodically cop

What to do with DNS errors (how to properly set up DNS)

Have you ever encountered a DNS error or can be on the QQ but not open the Web page situation? Or is it too slow to open the page? These could be DNS setup errors or no settings, so here's how to troubleshoot DNS errors and how to set up DNS to navigate the web smoothly. Tools/raw Materials Windows Xp/vista Treewalk

Cainiao also uses DNS to build a secure DNS Server

DNS is the basic service of the internet, and bind is the most popular open-source DNS software. Because it is very popular, it is very aggressive. Therefore, we need to build a secure DNS server. There are several measures to build a secure DNS Service (for basic bind compilation and installation and configuration, re

Cainiao also uses DNS to configure the DNS cache server

Most DNS cache servers exist in small enterprises. they are not responsible for domain name resolution and are only used to help users query domain name information from other DNS servers. The queried information is saved locally to facilitate the next use of the domain name. it is valid to shorten the domain name query time and save the local information. The following is... information Most

Learn DNS Series (10) Diagram, example detailed DNS recursive and iterative query principle and process (1)

The previous section mentioned some of the content of the recursive query, but said very little, but also very general, this section will be based on the principle and the case two aspects of DNS recursion and iterative query. Before that, we need to learn some background to better understand today's topic. In the Internet, a smooth resolution of a domain name is inseparable from two types of domain name servers, only by the two types of domain name

How DNS servers work

server about which DNS servers are responsible for each top domain, so he will respond to the nearest name server as the DNS servo host that controls the CN domain. In step 5, the root name server has told the local DNS server which is in charge of the domain. cn, and then the local DNS sends a request for the name of

Learn DNS Series (ii) Understanding the primary DNS suffix option for a computer

Originally in this verse to explain the installation of DNS, but I found that in fact before this, but also need to explain a few basic concepts, first of all, the DNS suffix. In the previous basic chapters, we know that a domain name can be divided into the main and suffix 2 parts, where the host we can understand as a host or a network terminal name, the suffix directly determines the nature of the domai

How can I modify the dns of win7 system? Detailed explanation of dns settings on Windows 7

What is DNS DNS (domain Name System, name Systems), a distributed database that maps to each other as domain names and IP addresses on the Internet, makes it easier for users to access the Internet without remembering the number of IP strings that can be read directly by the machine. The process by which the host name corresponds to the IP address is called Domain name resolution (or host name resolution).

What is the role of DNS? Why you must configure DNS to surf the internet

Transferred from: http://www.office68.com/computer/14231.html DNS is the abbreviation for the domain Name System and is a core service of the Internet as a distributed database that maps domain names and IP addresses to each other, making it easier for people to access the Internet without remembering the number of IP strings that can be read directly by the machine. This is also the official statement of DNS

DNS Article 7 DNS Log System

Use bind, dlz, and MySQL to build intelligent DNS. The DNS data can be put into MySQL. Yum list all | grep BIND contains an SDB package. You can also put our data in the database. How can I enable the DNS log function? It is not recommended to enable the log function. If the log function is enabled, the DNS performan

Passive information collection 1--dns base + DNS Resolution tool nslookup use

Passive Information collectionFeatures:Based on open channelNo direct contact with the targetAvoid leaving all traces.Standard Reference--osint:U.S. militaryNorth Atlantic Treaty Organization noun explanationdns--domain Name System domain Name SystemsA distributed database that maps the domain name and IP address on the Internet makes it easier for users to access the Internet without remembering the number of IP strings that can be read directly by the machine. The process of obtaining the IP a

Win8.1 Set DNS Win8.1 modify DNS server address tutorial

Recently found that a number of installation Win8.1 system users encountered Win8.1 application store and Updata Automatic Updates, the presence of the application store can not open and can not get automatic update information and so on. And these two kinds of problems, we can usually modify the DNS server address to be resolved, so the following article will be a detailed introduction to the next Win8.1 how to set up

Site optimization should pay attention to DNS pre-acquisition (DNS prefetching)

Website optimization technology is always evolving. Today I re-read the previous front-end optimization notes and found that the section on YSlow Optimization 34 guidelines on reducing DNS lookups (reduce DNS lookups) should probably be revised. DNS as the foundation of the Internet Protocol, the speed of its resolution seems easy to be overlooked by site optimiz

DNS Series one: DNS query principle

Most of the network traffic is based on TCP/IP, while TCP/IP traffic is based on IP address, but in the real network access who is willing to use IP address, because the IP address we remember inconvenient. To solve this problem, DNS is available. DNS: Domain Name System users access to the Internet through the input www.luwenju.com actually entered a computer name, the user's computer to the

Diy dns queryserver: Understand DNS protocol

Every time we enter any domain name in the browser to access a website, we use the Dns protocol to perform a "Domain Name: IP" query. As a command line user, the Nslookup command is the most widely used dns-related command. As a programmer, taking c # as an example, the ip address of a domain name is probably the same as the line "System. net. dns. getHostByName

Summary of DNS data

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 configure them. The DNS proto

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