first, the Domain Name System introduction
1. Domain Name System
Domain Name System is a distributed database, it makes the local control of the entire distributed database segment, each section of the data through the customer, the server model in the entire network can be accessed, through the use of replication technology and caching technology to make the entire database reliable, but also has good performance.
The domain name
How to: Find the fastest apt mirror server for Debian or UbuntuHow to find the fastest apt Backup Server In Debian or Ubuntu
Submitted by ggarron on Wed, 05/14/2008-16:51
If you want to use the fastest mirror to download. deb files you may need to upgrade or update your Debian machines, you have to remember that not al
http://www.isc.org/Maintenance.1. Create local DNS reverse resolution domain file
proxy4bak# Cd/etc/namedbproxy4bak# SH make-localhost
The Localhost.rev file is generated under the/etc/namedb/master directory.2. Edit the DNS configuration file/etc/namedb/named.confThe contents are as follows:
;background-image:none;border-bottom:0 px;padding-top:0px;padding-left:0px;border-left:0px;padding-right:0px; "border=" 0 "alt=" image "src=" http:// S3.51cto.com/wyfs02/m00/74/4c/wkiol1yyxshc6-_taaekb86ceh0971.jpg "height=" 311 "/>Here, the intranet DNS is 192.168.0.120, for requests to go outside the network request, when the Ldns can not find the resolution, will be sent to forwarders or root hints, so y
an IP segment, which is similar, no more)5. In/etc/bind/named.conf.option, do some file log location pointing6. Set the machine for the first DNS nameserver, in the/etc/resolv.conf file (note: I am in the modification of this is a link file, so directly to the past to modify the source file on the line)Add in the first line: nameserver 192.268.1.113Here the entire DNS configuration is complete;7. Test it:记
The DNS server for this example uses Powerdns+mysql+poweradmin to build.
Recently, I installed the Linux Mint 14 desktop operating system on my PC, just like try this desktop version of the operating system can not achieve the performance of server systems, the whole good I recently tried to use a new way to build a DNS
Set IP:
Vim/etc/network/interfaces
The following will be included:
Auto Eth0Iface eth0 inet DHCP
Modified to:
Auto Eth0#iface eth0 inet DHCPIface eth0 inet StaticAddress xxx.xxx.xxx.xxxnetmask xxx.xxx.xxx.xxxGateway xxx.xxx.xxx.xxx
Set the xxx.xxx.xxx to the information you want to be personalized, whichauto eth0#开机自动连接网络iface eth0 inet static# static indicates use of a fixed IP, dhcp stating that using dynamic IPaddressIs the native IP addressnetmaskSub
1, in the desktop to find "Network Neighborhood" icon, the right mouse click on the icon, in the pop-up menu select "Properties", the following figure:
If the desktop does not have a network Neighborhood icon, you can open the System Control Panel and select Network and Internet connections, as shown in the following figure:
2. After completing Step 1, the Network Connections folder appears. Depending on the user's broadband
configuration backup
interface eth1 //Server status detection
on which interface virtual_router_id
Priority 180 //backup machine is configured with the
advert_int 1/ check interval, in seconds
Authentication {
Auth_type pass
auth_pass 1234
}
virtual_ipaddress { //VIP settings, designated to intranet NIC
192.168.100.99/24 dev eth1
}
}
DNSMASQ's configuration is simple, too.
resol
that need to be loaded, and the natural system is running slower and faster. Then we need to use some of the programs that completely remove the DLLs, which can restore windows to a slim figure. It is useful to recommend that the best players reinstall Windows every two months.
9. Change the system boot time
Although you already know how to add and remove some random launcher, do you know what the computer is doing during the boot up to the time you enter Windows? Or, what program is being ex
This situation often appears on my machine and gives you some problems from time to time. But there are times when it's better to wait. or switch the engine to Baidu, it will make sense.The problem is very annoying. On the internet to find out that the firewall ah, such as problems. But the problem is often seen when you get it. Just a good look at the information or found the problem, I feel this head is really stupid.Assume that you are pinging othe
"broiler", not only caused its own network almost paralyzed, but also attacked others.
A temporary precaution is to use iptables to prevent the server from sending UDP packets out of the way. Then look for the application to find the vulnerability to clear the Trojan file.
Iptables-a output-m State--state established,related-j ACCEPT
Iptables-a output-p tcp-j ACCEPT
Iptables-a output-p UDP--dport 53-j
You have used the webbrowser control. Haha. It can provide us with a lot of convenient operations.However, if the computer cannot access the Internet or the network speed is slow, it will not be a great deal if there is an interface that cannot find the server. Haha. At least I think so.
What should we do? Check the network connection.
If (! Start. checkconnect ()){This. axwebbrowser1.navigate ("about: Ret
** Server can't find xxx.com: NXDOMAIN problems encountered by CentOS
Dns software named Configuration
Although I configured them step by step1./etc/named. confListen-on port 53 {127.0.0.1}; changed to listen-on port 53 {any ;};Allow-query {localhost;}; changed to listen-on port 53 {any ;};
2,/Etc/named. rfc1912.zones (File introduced in the last line of named. c
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