dns zone lookup

@ Zheng yu Summary I. symptom: Java httpclient initiates an HTTP request to the WebService interface under the x××× open. x××. com domain name from the master station data center, which is extremely slow. Troubleshooting: 1.1. wget test results No Specify the IP protocol and the interface for wget to access it. The time is 4.163 seconds, which is basically a waste of host parsing. If the IP protocol of the specified wget is IPv4, The wget test takes only 0.096 seconds. 1.2. WGEtCompari

The previous section mainly discusses the positive, reverse lookup zone of each attribute, today we began to focus on a number of important attributes to explain and demo, work will be used, so this part of the content is more important. We know that there are three types of zones, namely primary, secondary, and stub zones, and this section demonstrates the operations of secondary zones and stub zones. Se

DNS Positive Solution zone fileIn DNS, we know that there is the concept of domain and region, the English name of the domain is domains, it is a logical concept, and the region English full name zone, it is a physical concept. And zone is divided into positive solution area

There are two types of search zones in the DNS server for Windows 2000: Forward lookup Zones and reverse lookup zones. The forward lookup zone is used to process forward parsing, which resolves the host name to an IP address, and the reverse

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ObjectiveObjectiveIn the previous article has explained the cache server and forward-and-backward parsing, in this article explains how to configure the DNS master-slave server, and zone transfer, according to the previous experiment continue to complete the DNS master-slave server configuration.DNS master-Slave server configuration requirements:Add a Slave serve

1. BINDThe zone transfer(master-Slave synchronization)when a domain within the primary DNS downtime or high pressure requires adding a DNS server to replace the primary DNS or relieve the stress of primary DNS. Host Planning: Role IP Address Host Na

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We have prepared two domain controls in the previous blog post, so this chapter will be the most important step in creating a DNS zone.Let's take a brief look at the topology:650) this.width=650; "height=" 361 "title=" image "style=" Border:0px;padding-top:0px;padding-right:0px;padding-left : 0px;background-image:none; "alt=" image "src=" http://s3.51cto.com/wyfs02/M02/70/F4/ Wkiom1xbwt6ismv2aaecbktpgms208.jpg "border=" 0 "/>Log on to win2008 and open

DNS cache serverExperimental Machine IP 192.168.1.202First of all:1. Yum install bind bind-libs bind-utils-y download package Installation2. cp/etc/named.conf /etc/named.conf.bak Copy a configuration file3. Vim named.conf into the configuration file(within the red box is the place to add or modify)650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M01/8A/DF/wKioL1g-RjOzq0VIAAAsQzbD7wQ200.png "title=" 1.png " alt= "Wkiol1g-rjozq0viaaasqzbd7wq200.pn

Refer:Http://developer.yahoo.com/performance/rules.html#dns_lookups DNSJust like the phone book, search for the specified website'sIPAddress. Search onceDNSGenerally20-120Milliseconds. The Domain Name System (DNS) maps hostnames to IPAddresses, just as phonebooks map people's names to their phone numbers. WhenYou type www.yahoo.com into your browser, a DNS resolver contacted byBrowser returns that server'

Yahoo's YSlow plugin one of the rules: rule 9–reduce DNS Lookups mentioned: Reducing the number of unique hostnames has the potential to reduce the amount of parallel downloadingThe page.Avoiding DNS lookups cuts response times, but reducing the parallel downloads may increase the times.My guideline are to split this components across at least two but no more than four. This results in a good compromise be

Wireless WiFi on Apple computers is always a hassle Telecom broadband, got a Tplink no line by, no line by mode, set up a PPPoE on-demand link, set automatically get IP address, basic link not, with other computers or mobile phone links can, and then directly set IP manually Address, by the way DNS also to set up, at this point, sometimes can link up, but not on the network, prompted DNS

Running environment, NT (SERVER, WORKSTATION), W2K WSH2.0 or later must be installed on the server If WSH2.0 is not installed on your system, you can download it from the address below Http://www.microsoft.com/msdownload/vbscript/scripting.asp Contains WSH2.0 Below is the source code If Request. Form ("frmHost") = "" Then 'Set the Initial Value StrIP = Request. ServerVariables ("REMOTE_ADDR ") Else StrIP = Request. Form ("frmHost ") End If %> Value = "Value = "

Operating environment, NT (SERVER, WORKSTATION), W2K Need to install WSH2.0 or later on the server If your system does not currently have WSH2.0 installed, you can download it from the following address Http://www.microsoft.com/msdownload/vbscript/scripting.asp It contains WSH2.0. Below is the source code If Request.Form ("frmhost") = "" Then ' Set the initial value StrIP = Request.ServerVariables ("REMOTE_ADDR") Else StrIP = Request.Form ("Frmhost") End If %> Value= "Value= "

Program article translated from ASP101 Operating environment, NT (SERVER, WORKSTATION), W2K Need to install WSH2.0 or later on the server If your system does not currently have WSH2.0 installed, you can download it from the following address Http://www.microsoft.com/msdownload/vbscript/scripting.asp It contains WSH2.0. Below is the source code If Request.Form ("frmhost") = "" Then ' Set the initial value StrIP = Request.ServerVariables ("REMOTE_ADDR") Else StrIP = Request.Form ("Frmhost")

The previous section demonstrates the process of creating forward and reverse zones, and this section begins with a discussion of the attributes of 2, that is, the attributes of the region, we will focus on the properties of the positive region, and of course the attributes are not exactly the same, and the differences will be explained separately. Forward lookup zone (Forward