dns not resolving

In the Web experience, we often encounter this situation, that is, when calling Baidu union, Google alliance, and domain name files outside the domain name where the current webpage is located, the request latency is very serious. Is there a way to solve the serious latency of such requests? What is DNS Prefetch DNS Maps domain names to IP addresses. When a website is accessed through a domain name,

We know that some network operators perform DNS operations for some purpose, so that the correct IP address cannot be obtained through the domain name through the normal internet access settings of the ISP. Common means include DNS hijacking and DNS pollution. What is DNS hijacking?

Do not know if you have not used to set up DNS to maximize the speed of computer network optimization, set up DNS everyone is relatively unfamiliar, because generally also rarely mentioned, because the computer is generally the default is to automatically obtain DNS, do not need us to set up, but we should have heard that the computer can be on QQ but not open th

Pre-Erection Preparation:To set up a DNS server, you must install a software program that provides a DNS service, the BIND software, that can be installed using the following command:Yum install-y bind-chroot Bind-utis 1. Modify the master configuration file/etc/named.confThis server is relatively simple to set up, that is, in fact, this [so-called DNS ser

For domain name management, we must select a third-party DNS service provider when using domain name resolution During website construction, even free domain names are more stable than the original domain name platform. After all, most domain name registration platforms only provide domain name registration services. Stable resolution services are specialized by third-party businesses.If we are a Chinese website, general users will choose DNSPOD, CLOU

"Experimental description"Experimental environment: Add a server ns2.test.com, IP 192.168.0.112;Experimental purpose: The new server is configured to 192.168.0.111 this primary DNS server from the DNS server;" conditions for implementing master-Slave Synchronization"1, the master-slave server time must be synchronized, using NTP and time server periodic synchronization time;[Email protected] ~]# vim/etc/cro

Recently, my colleague reported that during the NSLookup test on the Intranet, I found that when I used the Intranet DNS server 192.168.1.1 for resolution, the DNS server responded very quickly and did not Any errors. However, when the DMZ server 51.144.198.99 is used for testing, the system always prompts that the request times out and returns the correct resolution. We suspect that the firewall we are usi

Secondary DNS server configuration******************The purpose of the secondary server: First, as a backup of the primary DNS server, the second is to share the load of the primary DNS server.The configuration of a secondary DNS server is relatively straightforward, because its zone database files are periodically cop

Have you ever encountered a DNS error or can be on the QQ but not open the Web page situation? Or is it too slow to open the page? These could be DNS setup errors or no settings, so here's how to troubleshoot DNS errors and how to set up DNS to navigate the web smoothly. Tools/raw Materials Windows Xp/vista Treewalk

, for example, resolving a domain name into an incorrect IP address, or, if we do not know the IP address corresponding to a domain name, we cannot access the site through the domain name. This is a DNS resolution failure. The biggest symptom of a DNS resolution failure is that the IP address corresponding to the website is correct, but an error occurs when acces

DNS is the basic service of the internet, and bind is the most popular open-source DNS software. Because it is very popular, it is very aggressive. Therefore, we need to build a secure DNS server. There are several measures to build a secure DNS Service (for basic bind compilation and installation and configuration, re

I. dns theory: DNS: Domain Name Service (domainnsmeservice) role: Resolving Domain names to IP (forward parsing) or resolve IP to domain name (reverse resolution) The classification of DNS top-level domains: Organization domain:. com.net.org Country domain:. cn.tw.jp.. reverse domain: Resolves IP to domain name

resolution fails, for example, resolving a domain name into an incorrect IP address, if you do not know the IP address corresponding to a domain name, you cannot access the site through the domain name. This is a DNS resolution error. The biggest symptom of a DNS resolution error is that the IP address corresponding to the website is correct, but an error occurs

DNS domain Name service and build cache DNS server detailed (2)1.DNS Service Installation: BIND, full name is Berkeley Internet name Domain, this software is maintained by ISC/etc/named.conf: The main function is to define the working properties and areas of the bind process/etc/rndc.key: Full name Remote name Domain Controller, primary storage key file/etc/rndc.

access, we need to enter this domain name that is easy to remember, there will be a server in the network that automatically resolves the corresponding domain name to an IP address. This is the DNS server. The machine that can implement DNS resolution can be either its own computer or a computer in the network. However, when DNS resolution fails, for example,

Today when looking at the source code of a website found rel= "dns-prefetch" href= "//static.tuweia.cn/" > A little curious about dns-prefetch, Because more than once to see, today finally can't help to see what he is what technology? Here is a brief description of Dns-prefetch found on the internet.DNS implements domain-to-IP mapping. Through the domain name to

Before you build a DNS server, introduce the terminology in several DNS 1, forward lookup zone: mapping for Computer name to IP address. When a DNS client initiates a request to a DNS server to resolve the IP address of a computer name, the DNS server looks in the forward l

DNS viewsWhat are DNS Views (DNS view)?The DNS view is based on different customer sources (referred to as IP), and the DNS server uses different data files to complete the parsing process. In this process, the DNS server is the s

This phenomenon has a high probability of occurrence, so this article will teach you some basic troubleshooting methods from scratch. 1. What is a DNS resolution fault? Generally, the addresses www.jb51.net and www.kanshule.com we access are called domain names, and all hosts on the network are identified by IP addresses, that is to say, only the IP address of the website can be accessed successfully. However, because the IP address informati

Outline: ? How to discover services in Kubernetes ? How to discover the services provided by pod ? How to use service discovery Services ? How to use the Kube-dns discovery service ? Kube-dns principle ? Composition ? Domain name format ? Configuration Note: this share is based on the Kubernetes 1.2 version!Let's start with a simple example.1.How to discover service