what is dns for

The code is as follows Copy Code :: Using the. bat batch file to implement the switching of multiple IP addresses in the Intranet demo file: Ipchange.bat:: Can also add more than 3,4,5 IP address, as long as the corresponding if

Label:Windows Azure Platform Family of articles CatalogNote: This article describes an Azure China service that uses a domestic century-connected operation.　　The service endpoint behind the previous traffic Manager must be the cloud service in the

Solution to slow ssh Login-Linux Enterprise Application-Linux server application information. The following is a detailed description. The ssh logon to the server (Linux) is slow for about 15 seconds, but the ping is fast and the load on the server

  C: Documents and SettingsAdministrator> nslookup [This is the first step of the command. "Nslookup" command.]Default Server: YOY.mshome.netAddress: 192.168.0.1 > Set type = ns [step 2. "Set type = ns"]> Server ns.xinnet.cn [step 3. "Server

For the wan nic, we configure the IP address and mask for it, without configuring the gateway and DNS. For LAN NICs, the IP address and mask are also configured. Because it is 10 private network segments, the mask can be used by default. Then we set

Generally, the implementation technologies of each company's products are different. The software system used by Cisco switches is Catalyst IOS. CLI is called "Command-Line Interface". To execute a Command, you must first enter the corresponding

I. use DHCP to allocate Ip addresses and Ip/TCP Properties Create a new scope and next step   Configuration scope name   Ip Range   Keep default   Keep default   Next step   Next step complete   Right-click to activate  

DHCP functions are embodied in many places TCP/IPEveryone knows that in a protocol-based network, each computer must have at least one IP address to communicate with other computers. In TCP/IP networks, basic network configurations are required for

We will teach you how to access the Internet in a virtual machine linux. The parameter setting command-Linux general technology-Linux technology and application information is as follows. After installing linux on a virtual machine, many friends

VPN routing technology mainly uses tunneling technology and encryption methods. Here we mainly analyze how to use the VPN route table to use both the optical fiber access network and the telecom network. If you use IP address verification, and it is

What is load balancing?When the performance of a single server reaches its limit, we can use a server cluster to improve the overall performance of the site. Then, in the server cluster, you need a server to act as the dispatcher's role, all of the

Why do you want to improve Web performance?Web performance Golden rule: Only 10%~20% end-user response time is spent on downloading HTML documents, while the rest of the 80%~90% time is spent on the download page component.Web performance has an

1.HTTP FoundationFeatures of http:Support b/S mode mode, no state.HTTP message: Consists of 2 parts starting line (request line or status line) and MIME information (header and content)HTTP Mediation: There are 3 kinds-server cache proxy, gateway,

DNS: domainnamesystem recursive query: you can obtain the final result iterative query after a query: you need to perform multiple queries to obtain the final result. Generally, the application method on the Internet is local recursion, partial

1. check whether the server has necessary support. if the check results do not have these support, pptp cannot be installed. after executing the command: # modprobeppp-compress-18 & amp; echook, after the execution, "OK" indicates that it passes.

Today, let's talk about how to build a PPTP-VPN in linux, PPTP (PointtoPointTunnelingProtocol), that is, point-to-Point Tunneling Protocol. This protocol is a new enhanced security protocol developed on the basis of the PPP protocol. it supports

& Nbsp; It takes about 15 seconds to connect to the ssh login server (Linux) on the first platform, but the ping is fast and the load on the server is low after logon. This small problem has not attracted attention. today, when the leader logged on,

Article title: RedHat7.2DNS configuration. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Author:

Recently, due to the problem of a centos website server, you have been constantly searching for centos security information. Below is a common iptables rule: IPT = "/sbin/iptables"$ Ipt-delete-chain$ Ipt-flush$ Ipp-input DROP #1$ Ipt-p forward

1234567891011121314151617181920212223ept = "/sbin/iptables" $ IPT -- delete-chain $ EPT -- flush $ ip- p input drop #1 $ ipt-p forward drop #1 $ ipt-p OUTPUT DROP #1 $ IPT-a input-m state -- state RELATED, ESTABLISHED-j ACCEPT #2 $ EPT-a input-p tcp-