dns probe

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

In the previous blog, we introduced the architecture of DNS, the common records, also introduced the configuration of the secondary server, today we will introduce some of the files behind the DNS server. In fact, the work of the DNS server relies on these files, understand the background files of DNS, to better unders

Most DNS cache servers exist in small enterprises. they are not responsible for domain name resolution and are only used to help users query domain name information from other DNS servers. The queried information is saved locally to facilitate the next use of the domain name. it is valid to shorten the domain name query time and save the local information. The following is... information Most

The previous section mentioned some of the content of the recursive query, but said very little, but also very general, this section will be based on the principle and the case two aspects of DNS recursion and iterative query. Before that, we need to learn some background to better understand today's topic. In the Internet, a smooth resolution of a domain name is inseparable from two types of domain name servers, only by the two types of domain name

Passive Information collectionFeatures:Based on open channelNo direct contact with the targetAvoid leaving all traces.Standard Reference--osint:U.S. militaryNorth Atlantic Treaty Organization noun explanationdns--domain Name System domain Name SystemsA distributed database that maps the domain name and IP address on the Internet makes it easier for users to access the Internet without remembering the number of IP strings that can be read directly by the machine. The process of obtaining the IP a

Recently found that a number of installation Win8.1 system users encountered Win8.1 application store and Updata Automatic Updates, the presence of the application store can not open and can not get automatic update information and so on. And these two kinds of problems, we can usually modify the DNS server address to be resolved, so the following article will be a detailed introduction to the next Win8.1 how to set up

Website optimization technology is always evolving. Today I re-read the previous front-end optimization notes and found that the section on YSlow Optimization 34 guidelines on reducing DNS lookups (reduce DNS lookups) should probably be revised. DNS as the foundation of the Internet Protocol, the speed of its resolution seems easy to be overlooked by site optimiz

Most of the network traffic is based on TCP/IP, while TCP/IP traffic is based on IP address, but in the real network access who is willing to use IP address, because the IP address we remember inconvenient. To solve this problem, DNS is available. DNS: Domain Name System users access to the Internet through the input www.luwenju.com actually entered a computer name, the user's computer to the

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

Originally in this verse to explain the installation of DNS, but I found that in fact before this, but also need to explain a few basic concepts, first of all, the DNS suffix. In the previous basic chapters, we know that a domain name can be divided into the main and suffix 2 parts, where the host we can understand as a host or a network terminal name, the suffix directly determines the nature of the domai

Originally transferred from http://hi.baidu.com/shyoung/blog/item/b0ccff03fd462481d43f7c5a.html The complete DNS System of the DNS component consists of the DNS server, region, Parser (DNS client), and resource records, and you need to correctly configure them. The DNS proto

DNS and BandDNS: Domain Name SystemWorking at the application layer, it is a protocol that listens to UDP and TCP ports 53 at the same time.UDP response query requestTCP response/Etc/HostAt the beginning, there was a relationship between the name you wanted to access and the corresponding name.However, as the network grows, the management and maintenance of host files becomes very troublesome.At this time,The international IP address assignment agency

I have understood this attack for a long time and do not understand what it means to "rebind. After A little understanding, I found that the attack principle is literal. Refresh the DNS A record and bind it to another address. In the following section, I reference the note of a fairy "To mount a DNS rebinding attack, the attacker need onlyRegister a domain name, such as attacker.com, and attractWeb tra defa

DNS is currently one of the most indispensable servers on the Internet, and every day we surf the web with the help of DNS. The DNS server can resolve the domain name for us, locate the e-mail server, and locate the domain controller in the domain ... In the face of such an important server role, we need to do some in-depth research, this article tries to explore

What is DNS DNS (domain Name System, name Systems), a distributed database that maps to each other as domain names and IP addresses on the Internet, makes it easier for users to access the Internet without remembering the number of IP strings that can be read directly by the machine. The process by which the host name corresponds to the IP address is called Domain name resolution (or host name resolution).

Transferred from: http://www.office68.com/computer/14231.html DNS is the abbreviation for the domain Name System and is a core service of the Internet as a distributed database that maps domain names and IP addresses to each other, making it easier for people to access the Internet without remembering the number of IP strings that can be read directly by the machine. This is also the official statement of DNS