Document directory
DNS structure:
Header section:
Question:
Resource Structure:
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 add
When
NetlogonWhen the service cannot register or cancel registering multiple resource records, the System Event Log will recordNetlogon5781Error message. The event description does not contain the names of these resource records. In addition, the event description may be "no ",DNS servers are available ", note: the common cause of these errors is that the domain controller references itself as the DNS
[Daily] DNS iterative Query Process and dns query Process
DNS is an application layer protocol, and the port numbers are tcp/53 and udp/53.DNS query process, such as accessing www.test.com1. The client queries www.test.com2. query the preferred DNS server, in Linux/etc/re
In the previous blog, we described how to create a common DNS record in a DNS server, and in this article we'll show you how to configure a secondary server for DNS, as well as a stub zone similar to a secondary zone.
A DNS secondary server is a fault-tolerant design, considering that once a
Each entry in a database is called a resource record (RR)
Resource record format:
The second field in the first section, the third field, the fourth field (resource record type), and the fifth field
Name TTL in (Internet) rrtvalue
If TTL is not written, you must specify a default value in the global variable. The TTL value can be omitted.
TTL 600;
For example:
Name [TTL] inrrt (resourcerecordtype) Value
Www.zledu.com. ina1.1.1.1
1.1.1.1inptrwww.zldu.com. (reverse resolution)
Resource Reco
First, the early topology map planning
DNS dual NIC; eth0:192.168.6.248 eth1:192.168.7.248
Telecom users: 192.168.6.X this network segment analog IP address 6.248 6.244
Unicom Users: 192.168.7.X This network segment analog IP address 7.248 7.244
Other users: any
Site Cluster Address:
Telecom Access: 192.168.1.1 192.168.1.2
Netcom Visit: 192.168.2.1 192.168.2.1
Other users: 192.168.3.1 192.168.3.1
Second, the configuration of rsync services,
The installation of DNS servers and clients is briefly described in the previous section. Although there are few knowledge points involved, there are already two parts of the DNS system that are indispensable, that is, DNS servers and clients, and the DNS system includes zone and resource records, which are primarily d
How does the DNS for Linux be set up? How to modify DNS addresses under LinuxHttps://jingyan.baidu.com/article/870c6fc32c028eb03fe4be30.htmlThe location of DNS settings under Linux is primarily,1 network card settings configuration file inside the DNS server address settings, 2. System default
The previous section describes some of the main DNS suffixes of the computer, and today this section continues to extend this topic, as well as other concepts related to it.
The test environment in this section is a simple topology environment in which a DC is connected to a client computer. The following figure:
In the WINS series, we said that when a ping program is used to access a name, if a WINS server is set up, a resolution request is sent to
Preface:If you are lucky to be seen by a friend and find something wrong in this article, you may want to criticize and correct it. If you have any questions, we hope you can discuss them together.
Because I have not registered a valid domain name, I only need to configure the DNS server in my LAN.
DNS Environment Planning
Vm ip Address: 10.170.2.10 master DNS
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
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
Build a DNS server in Linux and a dns server in linuxSystem Environment: CentOS 6.5 miniIP Address: 192.168.100.1001. Install related software packages# Yum install-y bind * caching-nameserver2. Open firewall ports# Vi/etc/sysconfig/iptables-AINPUT-m state -- state NEW-m tcp-p tcp -- dport 53-j ACCEPT-AINPUT-m state -- state NEW-m udp-p udp -- dport 53-j ACCEPT-AINPUT-m state -- state NEW-m tcp-p tcp -- dpo
;FQDNReverse: Ip-->fqdnForward: Fqdn-->ipIp-->fqdn:FQDN-->IP:Www.magedu.com.IP1Inquire:Recursive: Only one request is issuedIteration: Making multiple requestsAnalytical:Forward: Fqdn-->ipReverse: Ip-->fqdnTwo-stage: recursive, iterativeDNS: Distributed DatabaseThe superior only knows its direct subordinate;Subordinates only know the location of the root;DNS server:Accept local Customer query requests (recursive)External client Request: Request author
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