how to dns

When sending an email,PostfixUse the system's resolver (that isDNSClient, which can query the domain information function library from the DNS server) to obtain DNS information. When receiving A mail, the DNS of your domain must provide delivery

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

DNS protocol details I. PrefaceThe new version of Foxmail provides the "express mail" function. At first, I did not know how to use it. Later I learned to set the IP address of the local DNS server in tools> System Options.I think this new function

Author: Article Source: http://www.h4h4.com Release date: Click: 5717 Font family: [small, medium, and large] DNS Spoofing is a very complex attack method. However, it is easier to use than IP spoofing, so it is also common. The most recent case of

1. Main DNS configuration files /Etc/hosts-a list file of the Host-contains a list of known hosts (in the local network). If the system IP address is not dynamically generated, you can use it, for simple host name resolution (dot notation/Etc/host.

1. Clear DNS cache in Linux There are two methods to implement DNS caching in Linux:One is to use DNS CacheProgramNscd (Name Service cache Daemon) is responsible for managing DNS cache.One way to implement DNS caching is to use bind to set up the

In the process of finding a domain name through DNS, it is possible to go through multiple intermediate DNS servers to find the specified domain name, so finding the domain name on the DNS server is a very expensive operation. In Java, the DNS cache

Believe that on weekdays, many friends have encountered the DNS server did not respond to the problem, then what is the cause of this failure? And how should we solve it? The DNS server supports multi-line parsing, especially for operators with

Some users who use the win8.1 system, when browsing the site, found that the site can not move, as if hijacked. So what exactly is the situation? The original DNS in mischief, so now go to see how to set up DNS, so that the site is lifted hostage Oh!

Q: What is "DNS"? What is the text of this? A: DNS, to put it simply, is domain Name System, which is translated into Chinese is the "DNS". Q: What is DNS used for? A: In a network of TCP/IP architectures (such as the Internet), DNS is a very

We know that the host name can be used to identify a host or an IP address. People prefer to use host name identifiers that are easy to remember, while vrouters only wish to use IP addresses with fixed lengths and hierarchies. We can identify a

At present, many enterprises and institutions have set up units within the LAN, the internal network are equipped with related servers (such as Web, FTP and other servers). Internal network users want all servers to use domain names to access,

read the basic requirements of this article:1. The use of the cmd command has a certain basis2. The basic principles of DNS and common concepts have a certain understanding, such as host, alias, forward lookup zone, reverse lookup zone, and so on.3.

1, DNS is the domain name server, his task is to determine the domain name of the resolution, such as a record MX records and so on. 2, any domain name has at least one DNS, is generally 2. Why do you need more than 2? Because DNS can be used for

Definition: DNS Spoofing is a spoofing behavior by attackers impersonating domain name servers. Principle: If you can impersonate a Domain Name Server and set the queried IP address as the attacker's IP address, you can only view the attacker's

During domain name search through DNS, the specified domain name may be found through multiple intermediate DNS servers. Therefore, it is very expensive to search for a domain name on the DNS server. In Java, DNS cache is provided to alleviate this

Q: What is "DNS "? Why is it Chinese? A: DNS, simply put, is the Domain Name System. If it is translated into Chinese, it is the "Domain Name System ". Q: What is the purpose of DNS?A: In a TCP/IP network (such as the Internet) Environment, DNS is

There are a total of one hundred student terminals in the campus network of our school, which are divided into two student data centers. The Student Terminal IP address is provided by the School Server (using Windows2000 System) Manage allocation

For DNS (domain Name System) Everyone is certainly not unfamiliar, is not used to convert a site's domain name to the corresponding IP. When we find that we can go to QQ but can't browse the webpage, we will think that the domain name server hangs

From theory to practice, all-round understanding of DNS2015-11-23 Programmer's Home Selfboot Original: http://segmentfault.com/a/1190000003956853 For DNS (Domain Name System) Everyone is certainly not unfamiliar, is not used to