Shell practice: ping the DNS01 for batch resolution of domain names and ping the DNS02 requirement for batch resolution of domain names: Read the domain name list from a file: 031 read the domain name list file. 04 the format of the list file is 051cn062cn072. the resolved ip address is output to a file. 08 output file
In this paper, the regular library of C regex and Pcre in the domain validation of the scene to do the evaluation.The regular expression that validates the DNS domain name is:"^[0-9a-za-z_-]+ (\\.[ 0-9a-za-z_-]+) * (\\.[ A-za-z]{2,}\\.) $"Regular validation processing is done for 6,177,578 logs in the normal DNS reques
Build a cache Domain Name Server
Check the Domain Name Service Package
Attach the disc and install the service package
Need to install bind-9.3.6-4.P1.el5
Bind-chroot-9.3.6-4.P1.el5
Bind-libs-9.3.6-4.P1.el5
Bind-utils-9.3.6-4.P1.el5
Caching-nameserver-9.3.6-4.P1.el5.i386.rpm
Configure network information, host name, search domain,
Dns from the domain name serverHost Name:ns2.dns.com ip:192.168.200.102Nameserver 192.168.200.102Nameserver 192.168.200.101Configuration :[Email protected] packages]# vim/etc/named.confOptions {Listen-on Port 53 {192.168.200.102;};Listen-on-v6 Port 53 {:: 1;};Directory "/var/named";Dump-file "/var/named/data/cache_dump.db";Statistics-file "/var/named/data/named_stats.txt";Memstatistics-file "/var/named/data
For any valid domain name, there should be an authoritative domain name server (DNS) for that domain, and one or more resource records for that domain name in the domain name server.There are 5 items in a resource record, namely,
One, configuring DNS and search DomainsSpecially configured DNS The file is/etc/resolv.conf, and we can ifcfg-eth0 the NIC configuration and other configuration files specified in the.Demo Sample:[Email protected] desktop]# cat/etc/resolv.confSearch example.comNameServer 192.168.0.254[Email protected] desktop]#Second, configure host name[Email protected] desktop]# cat/etc/sysconfig/networkNetworking=yesHost
Let's say your server IP is 211.147.9.106
1 First, you should know which DNS server is responsible for this IP's reverse domain name resolution. You can use this page to query reverse domain name resolution information http://www.dnsstuff.com/tools/ptr.ch?ip=211.147.9.106
Look at the last paragraph.
Details:
ns.cnc.ac.cn. (a authoritative nameserver for 147.2
The DNS domain transfer vulnerability is tested in windows and BT5 as follows: if you want to test whether the website www.xxxxxx.net has the DNS domain transfer vulnerability, you can use the following method:
This year, Microsoft released the latest lync2013 relative lync2010 and added new features
Specific introduction and instructions, as well as some caveats can refer to Microsoft's Lync Assessment Center
http://technet.microsoft.com/zh-cn/lync/fp123621
All lab environments are deployed by Windows SERVER2012 Standard Edition
Lync is based on the Microsoft AD domain, so the ad domain must be set up before
Before the use of dnspod.cn analysis, there is no problem. Because I want to do the server analysis according to different countries (Europe, Asia, the United States) and then go to the dnspod.com inside have by the country to divide.But Europe's response is that it can't access the site on a daily basis. But in the domestic and basically is good. It was always thought that the server was not stable enough.Messages sent to this domain in the first 2 d
WinXPCMD------------->netsh winsock reset=============Related knowledge:The netsh winsock reset command means to reset the Winsock directory. If there is a problem with the Winsock protocol configuration on a machine that will cause problems such as network connectivity, you will need to reset the Winsock directory with the Netsh winsock reset command to restore the network. Winsock is a Windows network programming interface that starts with a built-in command from Windows XP SP2 and uses Netsh
Scenario: The day before the virtual machine in the configuration of the centos6.3, you can normally surf the internet, and the FTP server to build up, today a boot this goods unexpectedly can not surf the internet, depressed ....
Problem:
The following figure:
Can ping the IP address, but the domain name Ping pass ...
Resolution process: STEP1) A preliminary assessment of DNS problems
Step2) Googlin
Linux builds DNS two multi-domain name resolutionContinue on an articleSVR5 Server CENTTOS6 192.168.4.5pc205 Client CENTOS6 192.168.4.405Domain namehellc.cnhellc.com.cn----------------------------------------Add hellc.cn Zone (append in profile)[Email protected] ~]# vim/etc/named.confOptions {Directory "/var/named";};Zone "hellc.cn" in {Type master;File "Hellc.cn.zone";};Zone "hellc.com.cn" in {Type master;
The Domain Name System (DNS) is a distributed database used to replace the host name with an IP address.
There are two reasons for DNS:
(1) It makes it easy for users to remember their names, rather than pure IP addresses;
(2) allow the server to change the IP address, but use the original domain name.
The most bas
This is a creation in
Article, where the information may have evolved or changed.
The previous section has described how to construct a DNS request packet, and this section goes on to the previous section to talk about The problem part of the DNS query message. The format of each issue in the issues section is as follows:
The query name is the name to look for, and it is a sequence of one or more ide
In a Hadoop cluster, use DNS instead of hosts to access the server.1. Installing the BIND softwareRun with the root user: Yum-y Install bind*2. Configuring the named.conf fileVi/etc/named.conf Modify the following sections: Listen-on Port: (any;}; allow-query {any;}; After the modification, continue to modify another file under/etc.3. Add forward and reverse domain namesVI/etc/Named.rfc1912.zoneszone"."In {
1. Configure DNS and search domain
The file that specifically configures DNS is/etc/resolv. conf; you can also specify it in the configuration file of NIC configurations such as ifcfg-eth0.
Example:
[Root @ instructor Desktop] # cat/etc/resolv. confSearch example.comNameserver 192.168.0.254[Root @ instructor Desktop] #
Ii. Configure the Host Name
[Root @ i
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