relationship, if there is, first call this IP address mapping, complete domain name resolution.
2, if the hosts do not have this domain name mapping, then look for the local DNS parser cache, whether there is this URL mapping relationship, if any, direct return, complete the domain name resolution.
3, if the hosts and the local DNS resolver cache have no corresponding URL mapping relationship, first
:
The DNS server currently does not have a domain name. Its DNS name is called a single label hostname, and there are no domains (such as "host" instead of "host.microsoft.com").
You may have forgotten to configure the primary DNS domain for the server computer. For more i
Each IP address can have a host name that consists of one or more strings separated by a decimal point. With the hostname, do not memorize each IP device IP address, just remember the relative intuitive meaningful host name on the line. This is the function that the DNS protocol will perform.Today we will discuss DNS servers, especially Linux DNS servers, and how
, that is, he will randomly look for the pool records specified two servers, LyncFE01 just after the service was shut down, the client will not be able to log on to Lync, the client is going to find the surviving LyncFE02 on the line login650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M01/85/7C/wKiom1elTzGjkfpYAAAvnezOYHM721.png "style=" float: none; "title=" Qq20160806104451.png "alt=" Wkiom1eltzgjkfpyaaavnezoyhm721.png "/>8) Now the client t
Article Title: DNS server security strategy under solaris10. 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.
A DNS server is a server th
the name used to search for a website on the internet. It is an important identifier on the internet and is equivalent to a host's house number. Each host corresponds to an IP address. Each IP address consists of a series of numbers, such as 101.25.11.34. In order to facilitate memory, people use domain names instead of these numbers to search for hosts, such as mydomain.com. Each domain name corresponds to an IP address. people enter the domain name, and then the Domain Name
long as there are related resource records on the current DNS server, we will return the relevant informationFive, error troubleshootingBecause the main profile of the bind service named.conf and our zone profile is very complex and obscure, it is inevitable that configuration errors will occur, so bind also provides two very good commands to our named.conf in order to facilitate our troubleshooting. and z
{192.168.100.20;}; Indicates the primary server addressFile "Slaves/hngd.zones"; Location of the zone file from the domain name server};Zone "100.168.192.in-addr.arpa" in {Type slave;Masters {192.168.100.20;};File "Slaves/192.168.100.zone";};Include "/etc/named.rfc1912.zones";Include "/etc/named.root.key";2. Point the/etc/resolv.conf nameserver to 192.168.100.23. Turn off the firewall and SELinux4. Restart
192.168.1.163
GIS. esricd
Common Client
2
AGS-04
192.168.1.164
GIS. esricd
DNS Server
2 bind component Installation
In RHEL 6.1, to build a DNS server, you need to install the BIND component. First, check whether the system has installed bind by default:
The above results show tha
update your keys. See https://www.isc.org/bind-keys
// ================================================ ========================================
DNSSEC-validation Auto;
Auth-nxdomain no; # conform to rfc1035
Listen-on-v6 {Any ;};
};
Configure the primary DNS Server
Create forward zone File
Sudo Vim/etc/bind/named. conf. Local
Add the following content
[Plain]View plaincopy
Zone "qyjob.net "{
Ty
=" Wkiol1j5exiiiidvaagrv9olvqc204.png "src=" https:// S5.51cto.com/wyfs02/m02/91/eb/wkiol1j5exiiiidvaagrv9olvqc204.png "/>After the reverse zone creation is completeRight-click in the right margin, select new pointer, click Browse650) this.width=650; "title=" 13.png "style=" Float:none; "alt=" Wkiom1j5exmxerleaaadwoudcwe156.png "src=" https:// S5.51cto.com/wyfs02/m00/91/ec/wkiom1j5exmxerleaaadwoudcwe156.png "/>Always double-click to find the newly cre
The speed of surfing the Internet, and DNS server domain name resolution ability is closely related, I hope the internet surfing smooth sailing, we must find ways to ensure that the DNS server efficient and stable operation. To do this, we only have the workaround, dig deepe
description)
The. Root DNS server is represented by a symbolic dot.
. Com. net. org. cn. tw primary domain name
Linux
IdC.com second-level domain name
Therefore, our usual website such as www.linuxidc.com is actually www.linuxidc.com. The last point points to the root server.
(1) What types of queries does a DNS
DNS, domainnamesystem, or domainnameservice (Domain Name System or multiple-Name Service ). The domain name system assigns domain name addresses and IP addresses to hosts on the Internet. When a user uses a domain name address, the system automatically converts the domain name address to an IP address. Domain Name Service is an internet tool that runs the domain name system. The server that executes the Dom
. (
2012031602;
3600;
900;
68400;
15);
@ in NS ns1.qq.com.
NS1 in A 192.168.145.228
www in A 119.145.254.1
3.6 Establishing the log file
Create a new log folder under C:\WINDOWS\system32\dns
Create a new two file under C:\WINDOWS\system32\dns\log dns_logs.txt,dns_warnings.txt
3.7 Bind Overall directory structure:
3.8 Start Service3.8.1 Start bindTo the Windows Service Mana
relationship on the DNS server.
So when we want to bind a domain name to an IP address, we can do so by adding a resolution entry in the Hosts file.
Step one: Start-> search, and then look for files called hosts.
Step two: Of course, the reader who already knows his path can go directly to the C:\windows\ System32\Drivers\Etc directory to find the Hosts file.
Windows 2000 automatically starts the DNS Client Service, which provides the Client name resolution and cache service. Your DNS query results are cached locally. When configuring a DNS server, if you do not have a good grasp of this principle, some incorrect operations will often occur.
You can use the command at the c
PS: found a good article on the Internet, carried over, in case you can't find it later. At the same time the individual made a simple change. IP address, subnet mask, default gateway, what does DNS server mean?(a) Problem analysis001. Q: IP address, subnet mask, default gateway, DNS
The previous days have been doing the company's DNS scheduler, but due to poor performance, the scheme was eventually discarded. 2.5 months of painstaking efforts, do not want to waste, so changed, the trade secret related parts removed, became a public DNS server. In fact, the simple point, is a can do DNS resolution
Browsing the web allows us to do what we often do in the day-to-day use of the Win7 system, and recently a user reflects that in the Win7 system to open the Web page, always pop-up "can not find a server or DNS error" window, resulting in the network, but QQ and other software can be used normally, how to deal with this problem? ? below to explain the Win7 system
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