dns norton

The beginning, end, and analysis of DNS pollution nationwide in January 21, 2014 Ovear was debugging a new server at around on June 30, January 21, and it was found that it suddenly failed .. Ping the following command and find that all Ovear domain names point to the IP Address [65.49.2.178. The first reaction of Ovear is that DNSPOD is hacked again! Why is DNSPOD hacked? In fact, DNSPOD encountered a similar problem before, resulting in all domain

Ovear was debugging a new server at around on June 30, January 21, and it was found that it suddenly failed .. Ping the following command and find that all Ovear domain names point to the IP Address [65.49.2.178. The first reaction of Ovear is that DNSPOD is hacked again! Why is DNSPOD hacked? In fact, DNSPOD encountered a similar problem before, resulting in all domain names kneeling, just as the Ovear domain name also has several domain names tested there, then, let's talk to a group. As a res

Source: http://369369.blog.51cto.com/319630/812889Most of the network traffic is based on TCP/IP, and TCP/IP is based on the internet, so when the computer communicates on the network, it can only recognize IP addresses such as "202.96.134.133" and not know the domain name. We can not remember more than 10 IP addresses of the site, so when we visit the site, more is to enter the domain name in the browser address bar, you can see the required page, this is because there is a "

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

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

Install DNS suite: bind Finally, all the nonsense is finished! I believe you are a little tired !? The Bird brother is very tired, because the arm, shoulder and neck pain problems are quite serious... sorry! What are you doing here !? @ _ @ Well, we are finally going to install the suite required by DNS! As mentioned above, the DNS we want to use is the BIND (Ber

One of the most popular vulnerabilities recently discovered by the DNS protocol itself is a serious problem (cert vu #800113 ). Most of the domestic media reports are vague, so I want to talk about the vulnerability. First, we need to clarify the first question: how is DNS query performed? For most desktop systems, DNS queries are not completed by their own machi

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