computer dns server not responding

People may have such a puzzle: computers on the network can only identify such as "123.123.123.123" such as digital address, so why when we open the browser, in the Address bar to enter the domain name dns.qy.com.cn, we can see the page we need? In fact, just an IP address and domain name each other "translation" process. The former has to establish a domain name Mapping record that points to the corresponding IP address; for the latter, this record has been established and is in effect. The cr

The DNS server provides services to convert host names and domain names to IP addresses. Why do I need to convert host names and domain names to IP addresses? This is because when a client on the network accesses resources on a serverThe Host Name and domain name entered in the address bar of the browser are easy to remember. The connection between computers on the network is achieved through the unique IP

"), connect the accessed host or perform other operations, this network host that executes the DNS service is called a DNS server. Generally, the process of converting a domain name to an IP address for connection is called "forward resolution", and vice versa ". Find the root cause of the problem When a computer on a

Work Assignment DescriptionCompany name is ABC company, build DNS server. Head office in Beijing, the company's registered domain name is ht.com. Your company has two branches, the first for Asian companies (Asia), the company is headquartered in Beijing, the second is a European company (Europe), please set up a DNS on the head office

How to look at the DNS address of the computer? Sometimes the DNS address setting error, will lead to the situation, the following small Win7 notebook computer For example, teach everyone how to view the DNS address, interested friends, may wish to learn first, the following

Network communication is mostly based on TCP/IP, while TCP/IP is based on IP address, so the computer can only recognize the IP address such as "202.96.134.133" when communicating on the network, but cannot know the domain name. We can't remember sites with more than 10 IP addresses, so when we visit the site, more is in the browser address bar to enter the domain name, you can see the required page, this is because there is a call "

Set up a DNS server on the internal network that allows users to enter the IP address of the internal network DNS server in their computed DNS server IP address. A forward, directional lookup zone is established on the

BIND9Once the installation is complete, you can start it and let it start up as soon as the computer starts. $ systemctl start named $ systemctl enable named Configure BINDThis service uses/etc/named.conf as the configuration file.BIND uses some statements like the following in that file: Options: For global BIND configuration. Logging: Configure what needs to be logged and what needs to be ignored. I recommend you

1, in the use of the "ping" command of the DNS server to determine the smooth situation, when the "Request Timeout" phenomenon, we first need to troubleshoot the line to ensure that routers, moden and hubs, switches, network cards are connected to the interface of reliable, and the network cable intact. 2, in ensuring that the hardware wiring and equipment connection is correct, we take the fo

The probability of this phenomenon is relatively large, so this article will be from the beginning of zero to teach readers some basic troubleshooting DNS troubleshooting methods. first, what is a DNS resolution failure? Generally speaking, as we visit the www.jb51.net,www.kanshule.com these addresses are called domain names, and it is well known that any host in the network is the IP address to identif

The computer appears "your computer configuration appears to be correct, but the device or resource (DNS) does not detect a response" prompt, but the network connection appears normal, or other people on the same LAN can surf the Internet. There are many reasons for this situation, and if your computer also appears wit

DNS servers -- An Internet Achilles 'heel DNS server-a critical weakness of the Internet (Endurer Note: An/one's Achilles heel fatal injuryAchilles is one of the Greek gods, "Achilles ". It is said that Achilles's ankle seems very small, but it is a fatal weakness. See: http://vweb.cycnet.com/cms/2004/englishcorner/practical/t20050623_23574.htm) By Joris EversAut

server is that it can prevent the IP address conflict of computer in LAN, prevent IP conflict and network instability. If we manually assign IP addresses, more computers, many of which may be divided into duplicate IP address, it is troublesome to change. Using the DHCP server to automatically assign IP functions, you can avoid this trouble, the router uniformly

outward. The final answer is returned to the client. Authoritative response:The answer returned by the DNS server of the requested domain. Unauthoritative answer:Answers provided by the cache server, Cache DNS Server: Directly respond to the client request, starting from th

. conf, resolv. conf, named. boot, and named. conf under the/etc directory.1. In the "hosts" file, the host name and IP address are defined, and the IP address and Host Name of the computer that will run DNS are also defined. Content:　　127.0.0.1 localhost. localdomain localhost10.0.0.39 netfinity.zrs.com netfinity2. In the "hosts. conf" file, the "Order hosts bind" statement specifies that the resolution se

This article describes how to check whether the local DNS server works normally and how to update it. When we access a website, we directly enter the domain name in the browser, for example, www.webweb.com, when a website fails to be accessed normally, many users instinctively think that there is a problem with the local network or the target server. However, aft

Yesterday I wanted to set up a computer with Windows 2003 server as a server with domain name resolution, www browsing, and FTP. Refer to the relevant information forAfter DNS settings, the ping command is checked in Windows 2003, but the prompt for "Unknow host" is always present. How do I properly configure my

it can handle name resolution requests that are also amazing. For example, it was previously seen in an old Microsoft article that Windows Server 2003, installed on a Pentium III 700MHz computer as a dedicated DNS server, can handle more than 10,000 name resolutions per second. If Microsoft's data is correct, you can

. For example, the author input www.softer.com, if not access, then DNS resolution should not be normal. We will receive a message from DNS request timed Out,timeout was 2 seconds. This means that our computer does have a DNS resolution problem. Tip: If DNS parsing is norma

DNS Overview: DNS is the domain Name System, which is a distributed database, organized into a domain hierarchy of the structure of the computer and Network service naming system. Its role is: to transform the domain name into a network can identify the IP address, the results of the query to save, and told the client. Second,