dns not resolving

Achieve the goal: Building a DNS server1) Sina Server (dns.sina.com)Dns.sina.com-->192.168.4.5www.sina.com-->1.2.3.40news.sina.com-->1.2.3.452) Sohu Server (dns.sohu.net)dns.sohu.com-->192.168.4.6movie.sohu.net-->5.6.7.80study.sohu.net-->5.6.7.85 Client test:To 192.168.4.5 can query Movie.sohu.net, also can contrast 1.2.3.40To 192.168.4.6 can query www.sin.com. can also counter-check 5.6.7.80 Experimental process:The prerequisite has

After the first three sections of the matting, presumably we should have a basic understanding of DNS and related concepts, this section began to discuss the DNS server installation and configuration, but also have the client settings, the content is very basic. Today our test environment is made up of a single server for installing the DNS service and an XP sys

Label:Machine A--192.168.103.94--Server Machine B - -and 192.168.4.2--Client Machine A = Install Mysql-server, start; Use the root user login to see if DNS resolution is turned on, and execute the following command: Mysql> Show variables like ' skip_name_resolve% '; +-------------------+-------+ |variable_name | Value | +-------------------+-------+ | skip_name_resolve | OFF | +-------------------+-------+ 1 row in Set (0.00 sec) Indicates that

Experiment (I.)Experimental requirements: Configure DNS servers on two hosts, respectivelyExperimental Purpose:1. Do the authorization of the Bj.tarena.comDNS subdomain on the tarena.com.The 2.bj.tarena.com subdomain forwards the parent domain.Experimental environmentHost name FXHLJ IP address 192.168.1.20 responsible for parsing of the tarena.com domainWww.tarena.com 192.168.1.100Host name localhost IP address is 192.168.1.30 responsible for parsing

Install net: DNS Module Perl-mcpan-e "Install net: DNS" Script Simulation #!/usr/bin/perluse Net::DNS::Nameserver;use strict;use warnings;sub reply_handler { my ($qname, $qclass, $qtype, $peerhost,$query,$conn) = @_; my ($rcode, @ans, @auth, @add); print "Received query from $peerhost to ". $conn->{"sockhost"}. "\n"; $query->print; if ($qtyp

Install and configure the DNS server in linux, and configure the dns server in linux 1. DNS concept: Simply put, DNS is a service on the system that uses port 53 to provide mutual conversion between domain names and IP addresses. For example, if you access www.csdn.net, the router cannot know the address. You need to

In the previous blog, we introduced the DNS server architecture, from which we learned that if we want to register a domain name, then we must go through the top-level domain name server or its subordinate domain name server for our application of the domain name to delegate, the right to resolve to our DNS server, In this way we can obtain the right to resolve the requested domain name. In this article we

In the last section, we use the form of text to describe the process of DNS parsing, in order to better help you understand the entire parsing process, I did a DNS domain name resolution of the step-by-step diagram, as follows: In this diagram, the 8-step parsing process allows the client to successfully access the domain name of www.163.com, but in practical applications, the process is usually very rapid

1, login million network domain name self-service management platform address as follows: http://dmp.www.net.cn/). 2, and then login successfully after we find the panel "domain DNS modification" as shown in the following figure click on it. 3, then we will see that there are other DNS in the inside, the default is million network their own DNS, we dele

Code to remotely register static DNS records by invoking the WMI port of the DNS server$dnsServerName = "08dc01.mok.com"$containerName = "Mok.com"$dns =[wmiclass] "\\08dc01.mok.com\root\microsoftdns:microsoftdns_resourcerecord"$dns. Createinstancefromtextrepresentation ($dnsServerName, $containerName, "bb.mok.com in A

Tags: Force roc mini win successful domain Name Service delete fileEnvironment:Linux Server one (dual NIC)Intranet ip:192.168.80.180External network ip:192.168.90.180Linux client one, IP address: 192.168.80.10Win7 client One, IP address: 192.168.90.10Ensure network interoperability between server and two clients,Server testingLinux Client TestingWin7 Client TestingFirst step: Server Configuration--------------1. Installation Service----------------[[email protected] ~]# Yum install-y bind bind-u

hosts for transfer) Master and slave. How do I create a DNS slave server? Rpm-e bind-libs bind-utils SCP 172.16.100.1:/etc/yum. Repos. d/server. Repo ./ Yum-y install bind97 bind97-utils Ls-L/var/named/# note that the data is synchronized using the named user and named group during data synchronization. Therefore, it is not allowed to directly put the data under this directory; When synchronizing data, you can directly put it in the slave directo

Modify DNS in Linux and dns in linux Not long ago, I encountered some problems on the server. I need to modify the dns configuration of the server and write it down. I used centos 6.5. The DNS configuration file is in/etc/resolv. conf, but the service network restart is restarted after modification. If it is opened a

How to change the DNS settings for IOS devices The first step: we click "Set" in Iphone6 standby and then open it into the details below. Step two: Now we're going to click on wi-fi"Wireless LAN" Here we want to find ourselves using Wi-Fi network. " As shown in the following figure Step three: Then, as shown in the following figure, the previous selection is the WiFi we are on, and we click the "Show Info" button (the letter "i") on the

And then, in the unfinished part of section nineth, we'll go on to explore the properties of the DNS server, the main content today is the Advanced tab, which is also an important part of the DNS attribute, but interestingly, we rarely modify the content here. However, the meaning of each option needs to be carefully understood. Open the DNS properties and locat

In Linux, often parsing a domain name, the first will find /etc/hosts file, if the /etc/hosts file does not correspond, will go to find DNS, then what is the way to let the host first look for DNS it?Of course, it's defined in the /etc/nsswitch.conf file./etc/nsswitch.confHosts:files DNS//Find this section and change it to the followingHosts:dns filesIn this way,

Introduction to DNSDNS (domain Name System, domainname) on the Internet as domain names andIP Addressone of the mutual mappingsDistributed databaseTo make it easier for users to accessInternet, instead of remembering the number of IP strings that can be read directly by the machine. ThroughHostname, the process of eventually getting the IP address for that hostname is called Domain name resolution (or hostname resolution). The DNS protocol runs onUd

How to modify the Android phone DNS First step We take the Android phone as an example, click "Settings" in the phone and click "WLAN Settings" to open the entry Second Step Then we find our WiFi connection and then press it, and then we pop up the "Modify network". Third Step After entering, we click "Show advanced Options" To change "IP settings" to "static" so that you can manually enter a DNS addr