cox dns

(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

ADSL modem VPI, VCI, and DNS information in various regionsGuangxi 0 35 DNS 202.103.224.68Beijing 0 35 DNS 202.106.196.115Guangdong Zhongshan 0 35 DNS: 202.96.128.68Hunan 0 35, DNS: 211.98.2.4Fujian, 0 200, DNS: 202.101.98.55 and

DNS domain name resolution The purpose of the domain name resolution is to convert the website name that users use to the TCP/IP protocol, and hostname is just convenient for people to remember, after all, IP is a pure digital address to the user is very unfriendly. However, when using TCP/IP communication, the computer is implemented through the IP address +port port number, so when we type a host name in the browser, we eventually need to convert

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 actual application, DNS resolution errors may occur, that is, when we access a domain name, it cannot be resolved to an IP address, however, you can directly enter the website IP address for normal access, which is caused by a DNS resolution failure..Common Causes of DNS failure include:The domain name itself has expired or has been stopped;The

Code 9527---DNS Protocol In Zhou xingchi's movie Tang bohu's qiuxiang, As soon as Zhou xingchi entered Washington, he was forced to add a code 9527. From then on, Washington started to call the main character 9527, rather than his name. Domain name is the IP address code. A domain name generally consists of characters. For humans, domain names composed of characters, such as www.yahoo.com, are easier to remember than IP addresses composed of pure n

What is DNS tunnel? DNS tunnel is the DNS tunnel. The DNS query process is used to establish a tunnel and transmit data. Why use DNS tunnel? When you are in a hotel, airport or other public place, there is usually a Wi-Fi signal, but when you visit a website, such as _______

From: http://blog.csdn.net/cz_hyf/archive/2006/02/19/603022.aspx If a user node wants to obtain the corresponding "dpt1The IP address of. SEU. edu. cn. The processing of this node is as follows:1) send a "Answer" request to the local DNS server. To improve work efficiency, use the connectionless datagram service. If the local DNS server knows the corresponding dpt1. Seu. edu. if the local

1. What is DNSDNS: Domain Name Service, which is a hierarchical computer and network Service naming system that implements name resolution (HOSTNAMEDNS uses the C/s architecture, and the service listens on port 53rd of the host's tcp/udp. Transport Layer protocol UDP is used for domain name resolution, TCP for zone transferLocal name resolution file: Hosts (host limited time available)/etc/hosts%windows%/system32/drivers/etc/hosts2.dns ArchitectureA t

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 one of the network infrastructure protocols, presumably everyone should have some understanding. DNS is one of the most important services for all windows-based networks. In the absence of DNS support, the Active Directory does not work, and it uses more features than any other type of network. As a result, it is a critical task to resolve the problem as s