third party dns

1. experiment environment 1.1 requirements Configure forward parsing bind Configure reverse resolution bind Configure bind of secondary DNS Implement regional transfer between primary and secondary DNS 1.2 Environmental Planning Primary DNS: centos6.8-01 172.24.8.10 linuxmaster.aliyun.com Secondary DNS: centos6.8-

Ten simple methods to mitigate DNS-based DDoS attacks Researchers found that attackers often use UDP flood attacks (UDP floods) in massive bandwidth-based DDoS attacks (Distributed Denial of Service attacks ). Because UDP is a connectionless protocol, attackers can use scripts to generate UDP packets easily.DNS mainly uses UDP protocol, but in some special cases, DNS also chooses to use TCP protocol accordi

In this article, the relevant program T-DNS to support any host within the LAN to initiate dns id spoofing attacks, so that any website accessed by it is directed to a custom WEB server, such as your personal homepage. You can download this software from SafeChina.Download link: http://www.safechina.net/download/click.php? Type = original site id = 1038791088> A Domain Name System (

Build a DNS server by yourself Preface: During normal internet access, domain names are all accessed. How can we convert domain names to IP addresses? What about accessing our server host? In this case, you need to use the DNS server. DNS is composed of a domain name parser and a Domain Name Server. A Domain Name Server is a server that stores the domain names an

DNS is divided into client and server. The client plays the role of question, that is, to ask the server a domain name, and the server must answer the real IP address of this domain name. The local DNS first queries its own database. If your database does not exist, you will ask the DNS set up on the DNS. After you get

Beijing DNS address: 202.96.199.20.202.96.0.20.202.106.0.20 202.106.148.1 202.97.16.195 Shanghai DNS address: 202.96.199.132 202.96.199.20.202.96.209.5 202.96.209.20. Tianjin DNS address: 202.99.96.68 10.10.64.68 Guangdong DNS address: 202.96.128.143 202.96.128.68 202.96.128.110 Shenzhen

I. Domain Name and domain name resolution NetworkIn order to distinguish each host, you must assign a unique address to each host. This address is called "IP AddressAddress ". However, these numbers are hard to remember, so they are replaced by domain names. HoweverThe host can be accessed only when the domain name is converted to the corresponding IP address.The DNS service, also known as the domain name resolution service, provides mutual conversio

Not only is DNS important in our corporate network, it is also an important service for many systems on the internet, so DNS, one of the most important services, is particularly critical to his audit. But the changes in DNS registration information rarely have audit software to record, and as a third party audit softwa

A: What is DNS why there is DNSDomain Name Systems (English: Domain Name System, abbreviation: DNS) is a service of the Internet. The internet was born early because the number of access to the Internet is very small, there is no dedicated DNS server to the entire Internet domain name, at that time only in our host file records the host and IP corresponding relat

In the actual application process may encounter the problem of DNS parsing errors, that is, when we access a domain name can not be completed to resolve the work of the IP address, and the direct input of the Web site IP can be normal access, this is because of DNS resolution failure caused. The probability of this phenomenon is relatively large, so this article will be from the beginning of zero to teach r

Dns settings in linux Author: Slice① IntroductionDNS is the Domain Name System, which can convert a Domain Name such as www.21php.com to an IP address such as 211.152.50.35. If there is no DNS, When you browse the website 21php.com, you must use numbers that are so hard to remember as 211.152.50.35. The DNS server provides the

In the process of accessing the Web site, we may often encounter the phenomenon of inaccessible web pages, when encountered this phenomenon, I believe most people will subconsciously think that the network dropped, or the target site of the server there is a problem, but after a careful investigation, the Web page can not open the phenomenon is not caused by these factors, So what is the reason for the Web page content can not open it. In fact, the most likely cause of the inability to open a W

(1) restrict name server recursive query Disabling recursive queries can enable the name server to enter the passive mode. When it sends a query request to an external DNS, it will only answer the query request for its authorized domain, instead of caching any external data, therefore, it is impossible to suffer from cache poisoning attacks, but such actions also have negative effects, reducing the speed and efficiency of