public dns name

Scenario: The day before the virtual machine in the configuration of the centos6.3, you can normally surf the internet, and the FTP server to build up, today a boot this goods unexpectedly can not surf the internet, depressed .... Problem: The following figure: Can ping the IP address, but the domain name Ping pass ... Resolution process: STEP1) A preliminary assessment of DNS problems Step2) Googlin

This is a creation in Article, where the information may have evolved or changed. The previous section has described how to construct a DNS request packet, and this section goes on to the previous section to talk about The problem part of the DNS query message. The format of each issue in the issues section is as follows: 　　 　　 The query name is the

This article mainly introduces the Python script to implement dynamic DNS domain name resolution. This article provides the implementation code directly. if you need it, you can refer to your spare time and build your own server at home, because the residential broadband is used, IP addresses are dynamically allocated. Domain name resolution is a problem. my doma

In this paper, the regular library of C regex and Pcre in the domain validation of the scene to do the evaluation.The regular expression that validates the DNS domain name is:"^[0-9a-za-z_-]+ (\\.[ 0-9a-za-z_-]+) * (\\.[ A-za-z]{2,}\\.) $"Regular validation processing is done for 6,177,578 logs in the normal DNS request log.1,pcreThe version number of the pcre us

Let's say your server IP is 211.147.9.106 1 First, you should know which DNS server is responsible for this IP's reverse domain name resolution. You can use this page to query reverse domain name resolution information http://www.dnsstuff.com/tools/ptr.ch?ip=211.147.9.106 Look at the last paragraph. Details: ns.cnc.ac.cn. (a authoritative nameserver for 147.2

Before the use of dnspod.cn analysis, there is no problem. Because I want to do the server analysis according to different countries (Europe, Asia, the United States) and then go to the dnspod.com inside have by the country to divide.But Europe's response is that it can't access the site on a daily basis. But in the domestic and basically is good. It was always thought that the server was not stable enough.Messages sent to this domain in the first 2 days are also returned. Engineers have occasio

Domain Name Service (DNS) hosts are queried by domain names and IP addresses. DNS is a client-server system in which the domain name interpreter accesses the Domain Name Server to link the domain name with the IP address or other

Php wildcard DNS second-level domain name session is not synchronized problem angle from the primary domain name login account, into second-level domain name session will be gone .. However, the account that logs on from the second-level domain name can be synchronized to th

be modified./etc/sysconfig/network-scripts/ifcfg-eth0 settings for a specific NIC/etc/resolv.conf Setting up DNS/etc/hosts setting the specified domain name resolution addressDevice=eth0Bootproto=staticType=ethernetName= "System etho0"broadcast=192.168.56.255hwaddr=08:00:27:24:f8:9bIpaddr=192.168.56.101Ipv6init=yesIpv6_autoconf=yesnetmask=255.255.255.0network=192.168.56.1Onboot=yesService Network restartCh

Replace gethostbyname and gethostbyname with getaddrinfo for DNS domain name resolution. Void DomainToIP (const char * host, const char * portStr, char * ip) {struct addrinfo hints, * res, * res0; char str [32] = {0 }; memset ( hints, 0, sizeof (hints); hints. ai_family = PF_UNSPEC; hints. ai_socktype = SOCK_STREAM; hints. ai_protocol = IPPROTO_TCP; hints. ai_flags = AI_PASSIVE; int ret = getaddrinfo (host

Linux (1): linux change IP address command _ change DNS _ change default gateway _ change subnet mask _ host name, linuxdns How to use commands to change the linux IP address, DNS, and subnet mask, and add a Linux virtual machine to the Virtual Machine (vitrualBox; Installation: http://pan.baidu.com/s/1sjJPhP7 After installation, go to the Linux desktop, which i

The Domain Name System (DNS) is a distributed database used to replace the host name with an IP address. There are two reasons for DNS: (1) It makes it easy for users to remember their names, rather than pure IP addresses; (2) allow the server to change the IP address, but use the original domain

This article introduces the implementation of PHP with a section of the query DNS domain name information code, there is a need for a friend reference.In PHP, domain-related operations typically use two functions, namely: gethostbyname () and gethostbyaddr ().One, the IP address query gethostbyname () function, which can be used to find the IP address of a given domain