In today's market to ensure the reliability and security of Internet connection more and more begin to appear a variety of services and, in particular, there is a special place is given to the servers DNS.Settings such servers for many people is a pretty time-consuming task.However, the output you get is extremely reliable and secure servers to ensure basic protection, as well as parental control, that is, blocking of unwanted, harmful and even dangerous websites.
However, the most important element that influences how effectively will run your DNS - configure the server to be performed very competently.
What is DNS?
DNS - is a specialized distributed system determining the correspondence between the numeric IP-address of the computer and its name.Such addressing is the most convenient in terms of machining all kinds of routing tables, but at the same time - is absolutely unacceptable for human use.After all, people remember a huge amount of sets of numbers is much more difficult in comparison with meaningful names.
Initially, in order to simplify the interaction, as well as to make easier for users was itself configure DNS-server, used special table in which a correspondence of numerical addresses to individual names of machines, and such tables are preserved to this day, andactively used by various old applications.In particular, it is a file named hosts.Today, most people know the various online resources for their domain names, and such a statement is valid not only for the addresses of different web sites, but also for e-mail addresses.
Thus any address dominant place is just an individual domain name server.
Why DNS-servers?
Thus, we can define the main purpose of which is DNS-server adjustments, and its continued use:
- get unique information about the IP-address of a specific server, in accordance with his name, and vice versa.
- different routing e-mail.
- Provide full information about what servers are serving the specific protocols in the network.
Why is the correct setting?
For example, on Ubuntu DNS settings on a granular level requires some knowledge and a full understanding of what constitutes those or other settings.In this case, there can be no no no question of experimenting, doing a change in the server within a particular company.After all, if the DNS configuration on Ubuntu will be carried out with at least one reckless action, the entire network of the company will be a little more than a large number of wires, as no one service will not work properly.
But a lot of confidence users like to enter all the settings by hand.And this applies even to such simple things as the introduction of IP-address, subnet mask and gateway address, and DNS settings on the computer.But in fact, many people have long since automate such processes.
Windows 8
- To configure the server in the operating system, you initially will need to bring the mouse to the lower left corner of the screen, click LMB on the "Start" button, then open the "Control Panel" from the contextmenu.
- Now go to "Network and Internet", then "Network Control Center" and now go into the "Change adapter settings".
- In the menu you will need from the list select the appropriate network connection.Once you find it, tap the RMB and select "Properties."
- In the list "Components checked are used by this connection" you have to select "Internet Protocol Version 4 (TCP / IP)" and also press "Properties."
- Now a new window opens, and in particular the "General" tab, where you will need to select "Use addresses DNS".
- Once you put the appropriate checkbox, you unlock the ability to enter various data lines below and now you can enter in the field of server settings DNS, whose settings you are interested in.
Then you will need to click "OK" to input your changes have been saved.Special attention should be paid to the fact that you need not enter the parameters in the top lines (IP), namely, the lower, as otherwise you will not be able to enter the options you want DNS, whose settings must be changed.
Windows 7
- Again, as in the case with the previous operating system, open the Control Panel.
- In the "Network and Internet", select the item "View network status and tasks".
- In the "View your active networks" will need to choose which is the right of the "Connections".
- In the window that appears you will need to click the "Properties", "Connection Status".
- In the list "Components checked are used by this connection" you have to select "Internet Protocol Version 4 (TCP / IP)" and also press "Properties."
- Now a new window opens, and in particular the "Network" tab, where you will need to select "Use addresses DNS".
- Once you put the appropriate checkbox, you unlock the ability to enter various data lines below and now you can enter in the field of server settings DNS, setting which interests you.
Click "OK", and the settings are saved.
Windows XP
Next, we consider how to verify DNS configuration, or modify them in Windows XP:
- Through the "Start" menu go to "Control Panel".
- Now select "Network Connections" and are looking for something that we need.
- Going to the "General" tab, in line with the name "Connection Status" will need to select "Properties."
- Now you need to go back to the "General" tab, scroll down, and then select the section "Internet Protocol (TCP / IP)" and then select "Properties."
- In the "General" section at the bottom check the box next to "Use addresses DNS", then you will be able to enter the necessary data.
Press "OK" and close all the windows.The settings are saved.
Windows Vista
Now consider how to verify DNS settings and modify them in the operating system Windows Vista:
- "Start" & gt; "Control Panel."
- "Network Control Center"
- In the "Network" will need to select "View the status of each connection."
- In the box in front of you need to click on "Properties".
- As in the previous case, scroll down until, until you have a chance to select "Internet Protocol Version 4 (TCP / IP)", then click on "Properties".
- Set tick "Use addresses DNS", then you can enter a variety of information.
Press "OK" and close all the windows, all settings will be saved.
Linux (Ubuntu)
On Linux DNS configuration is performed using the service resolvconf, by means of which the adjustment parameters are based on data obtained from the various subsystems.One of the useful properties of this innovation is that now the file is generated by the system is fully automatic, and not each individual program, which you want to make various changes and using a common programming interface.Thus, any changes in the file that you try to make his own, eventually just lost.
In this regard, information on DNS, designed for static interfaces must be entered in a special file etc / network / interfaces, under Options search, nameservers, and domain.At the same time, these parameters shall conform to the characteristics specified in the file resolv.conf.
Debian
If you need to configure Debian DNS, then this procedure does not differ from that which is provided to you other distributions.You will need to add an individual host name and its IP-address in a separate file etc / hosts for various static queries.To keep your computer constantly subsequently sent various requests to the appropriate server, you only need to add the address of the resource in a separate file etc / resolv.cong.
For example, if you are using a computer with the address 192.168.1.1, which must be continually send all kinds of requests for a particular DNS-server, in this case in resolv.conf the following line: nameserver 192.168.3.2.
Thus, you can change the settings of DNS-servers in all operating systems.It is important to establish the exact address that you provide the operator because otherwise you just can not get a connection.
