Changing DNS can be useful for two main reasons: the first is to bypass national restrictions and censorships on the web, for example, to open obscured sites here because they are considered illegal (sometimes even unfairly as in the case of VK.com or Mega. com), the second that by changing DNS you can browse faster . DNS, simply put, is the IP address of domain name resolution servers and internet addresses.
In practice it is a computer that you connect to every time you open your web browser to browse, which translates the IP address of a site that can be 173.194.40.23 into a name like google.it.
The IP addresses of the DNS servers are automatically assigned by the connection manager, for example by Telecom, Fastweb, Wind etc., but they can be changed using other DNS servers, which may be faster to do their translation work and which, not being located in Italy, they do not respond to requests for darkening websites.
Changing DNS can also be useful to increase privacy by preventing providers from knowing which sites we visit and to increase security by denying connections to dangerous sites.
It is therefore worth changing them using different servers which can be, for example, Google's fast DNS or OpenDNS secure DNS.
To change DNS on a Windows PC you need to open the Control Panel, open the network connection center and click on the link on the left Change card settings (or right click on the connection icon next to the clock).
Locate the active connection used, right click, go to Properties, scroll the list down, select Internet Protocol TCP / IP v4, press Properties, click Use the following DNS servers and write the two addresses.
Fortunately, to avoid all this click, you can download a Nirsoft tool called QuickSetDNS and change DNS quickly, with a click .
Download the utility by clicking the download link in the middle of the page, extract the folder by right clicking on it and click on the QuickSetDNS file.
QSDNS is a standalone program that does not require installation and which shows the DNS servers configured on the computer.
It also provides Google's public DNS servers and the DNS set on the router.
To choose which of these DNS to use, just click on it with the right button and then click on Set Active DNS (you can also just press the F2 key.
To add a new set of addresses just click with the right button in the empty space and then on New DNS server writing the ip addresses separated by a comma and a space.
For example, to add OpenDNS, write 208.67.222.222, 208.67.220.220 .
To make changing DNS even easier, you can create quick links to put on the desktop or in a specific Windows folder.
To do this, for example, click on the Google DNS line in QuickSetDNS and choose the Copy SetNDS Command Line option.
Now go to the desktop, right click on the blank and use the option to create a new link by pasting the information copied from QSDNS into the destination field, press Next and give a name.
Clicking that link will tell the PC to use Google DNS.
Then repeat the procedure for the " Automatic DNS " setting so that you can restore the default settings without having to do more than one click.
To change DNS on Mac I don't think there is such a utility, so proceed as follows.
OSX assumes that you are using the router's DNS servers, unless otherwise noted.
To change DNS servers on OSX, search for Spotlight ("Command + Space") and enter the network preferences.
Select the internet connection used (Wi-Fi or LAN), click on " Advanced " at the bottom right, go to the "DNS" tab, and add the OpenDNS, Google DNS or other servers with the + key.
Changing DNS on the router means changing the automatic setting of all connected devices.
To do this, you must enter the router settings from the web browser (generally by typing in the address bar 192.168.1.1) and then, from the configuration screen, search for DNS or DHCP settings or DHCP Server .
In another article, the guide to change DNS on Android smartphones and iPhones .
