check nameserver records

Netstat Command Overview:Netstat is a very useful tool for monitoring TCP/IP networks, which can display routing tables, actual TCP network connections, TCP and UDP snooping, process memory management, and status information for each network

The operating system in this article is centos and the opensips version is 1.8.2. Update2013/6/27: version 1.9.1 is also verified as a http://opensips.org/pub/opensips/latest/src/opensips-1.9.1_src.tar.gz Install centos (Skip this step if you

1 in Windows system, click the "Start" menu → "Run" → "input cmd" (Windows98 System for command), open the Windows system's MS-DOS interface. Enter the "nslookup" command to enter the domain name resolution interface. 2 Enter "Set Q=MX" to enter MX

For details about dns settings in linux-Linux Enterprise Application-Linux server application, see the following. ① Introduction DNS 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.

In Linux, many configuration files must be used to run network functions. Although many tools or programs can be used to set the content of these files, however, from the perspective of system maintenance, it is absolutely necessary to understand

Users who frequently access the Internet may often go to large websites such as Sina and Sohu. They only need to enter their URLs in the browser to access the website. It seems very simple, but technically speaking, but it contains a complicated

DNS is used whenever you use the Internet. Every time you send an email or surf the internet, you must rely on DNS. DNS is responsible for the ing between host names and interconnected network addresses, which is handled by computers. If the

  Original article: http://www.cnitblog.com/201/archive/2009/08/20/60887.html It is very convenient to be familiar with ifconfig. Ifconfig eth0 new ip Then edit/etc/sysconfig/network-scripts/ifcfg-eth0 and modify the ip 1. Modify the IP

PowerDNS A DNS server that supports PHP Web Page Management and allows you to add DNS address records directly to the database, which is flexible and convenient.   See Information Host Name Host Name recorded in PDNS Local ip Address

Create a DNS server on Linux-Linux Enterprise Application-Linux server application information. For more information, see. I. Assumptions Many DNS articles start with the DNS principle. From the perspective of my use, I will provide some simple and