dns redundancy

1. What is DNS? (Domain Name System) domain name system. In fact, the functions implemented by DNS are very simple and effective, so that users do not need to remember the IP addresses that frequently access the server, you can directly access the IP addresses of numeric strings in a format similar to that in pinyin. Suppose we use 61.120.155.14 (for example) to use these numbers to access the Web server.

This article mainly refers to from: http://369369.blog.51cto.com/319630/812889 and made a small change What is DNS. Hosts on the internet, like humans, can be identified in a variety of ways. A host's identification method is to use its host name (hostname), such as CNN.com, www.baidu.com, etc., but the host name provides little information about the location of the host in the Internet. (a host named www.eurecom.fr ends with a country code. FR, tell

What should I do if my website is hijacked? Whether the domain name is walled. How to detect DNS pollution. Website hijacking Detection Website opening speed detection. Checks whether a website is hacked, hacked, changed its title, or hacked. I encountered DNS problems on G +, so today I tested the status quo of DNS. The entire process is very simple. You only n

controller to check, the original backup domain controller on the network cable and Nic interface is loose, that is, backup domain controller actually out of the entire network. After the network cable in the backup domain controller is plugged in, the network card on the primary domain controller is started and the system is properly entered, and the fault is eliminated. This failure appears to be due to the loosening of the network cable on the backup domain controller, which is actually the

Welcome to the Windows community forum, and interact with 3 million technical staff to access the DNS software, which is a target of cyberattacks and may cause security problems. This article provides 10 most effective methods to protect DNS servers. 1. Using a DNS forwarder is a DNS server that completes

DDoS, you need to master the mutation patterns of these attacks. The stupidest defense is to spend a great deal of money on more bandwidth. Denial of service is like a game. If you use 10,000 systems to send 1Mbps of traffic, that means you are sending your server 10Gb of data traffic per second. This can cause congestion. In this case, the same rule applies to normal redundancy. At this point, you need more servers, data centers across the globe, a

Source: http://book.51cto.com/art/200801/64743.htm Http://www.xxeb.com/site/domain/20070314/23.html Author: Release Date: When the DNS client needs to query the name used in the program, it queries the DNS server to resolve the name. Each query message sent by the client contains three messages, specifying the server's answer: • The specified DNS do

The principle of DNS and its analytic process "wonderful anatomy" 2012-03-21 17:23:10Tags: dig wireshark bind nslookup DNS original works, allow reprint, when reproduced please be sure to use hyperlinks in the form of the original source of the article, author information and this statement. Otherwise, the legal liability will be investigated. http://369369.blog.51cto.com/319630/812889The principle of

Article Title: DNS resolution process. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. When the DNS client needs to query the name of an application, it will contact its own DNS server to resolve the name.

With the gradual popularization of networks, network security has become the focus of the INTERNET. It is related to the further development and popularization of the INTERNET, and even to the survival of the INTERNET. Fortunately, our INTERNET experts did not disappoint INTERNET users, and network security technologies continued to emerge, giving INTERNET users and enterprises more peace of mind, the following describes the main technologies in network security, hoping to provide a network secu

anyone (or a set of pre-defined users), and the other is the Web host mode, the server only parses requests to the service domain name. When the purpose of the server changes, you can change the configuration type at any time. The DNS server can be either a master server or a secondary server. The master server, also known as the master server, is the final source for determining domain names. The master server is also the source of zone transfer to

TechNet LibraryWindows ServerWindows Server R2 und Windows Server 2008Browse Windows Server TechnologiesNetworkingDirectAccessDirectAccess for Windows Server R2DirectAccess Design GuideDirectAccess Deployment Strategy PlanningDirectAccess available resources for clientsSelect Intranet IPv6 Connection DesignSelect a solution for IPV4-only Intranet resourcesSelect Access modelChoosing a Configuration methodRemote Management designDesign for Intranet server availability before users log onDesign pa

first, what is DNS. DNS (domain Name System) is the abbreviation for the name systems, a computer and network service naming system that is organized into a domain hierarchy that is used by TCP/IP networks and provides services for converting host names and domain names to IP addresses. You can think of it as a huge phone book.For example, if you want to access the domain name math.stackexchange.com, first

DNS software is the target of hackers ' passion for attack, and it can bring security problems. Here are some of the most effective ways to protect your DNS servers. 1. Using DNS ForwardersA DNS forwarder is a DNS server that completes D