If you are wondering why Hosts File is still in need when the trouble is already resolved by DNS, then you must know that at some point of prison term your Mac or machine may fail to reach a DNS server .
The Hosts file has the ability to configure those demanding IP address mappings and besides provide precession of local override before DNS does .
frankincense it is significant to learn how to edit Mac hosts file in macOS High Sierra .
While setting up your Mac to add a new server and connect it to the internet, the process can be backed by spyware and adware networks but there is this covert Hosts File in your Mac which will assist you to get rid of the headache.

One thing you must know that DNS is automatic while Hosts File is manual and that ’ s what gives you more manipulate over it .
Before we move on into editing the Hosts charge of macOS High Sierra manually, let ’ s get a clean idea of those two files or programs .

Domain Name System
Domain Name System
The DNS, acronym of Domain Name System, is the phonebook of internet. In technical foul terms, it memorizes the world names and translates them to Internet Protocol i, IP addresses .
What happens in the background is that it gathers all the information of world appoint servers spread throughout the internet and stack them at Central Registry .
then the Host companies and Internet Service providers cooperate with the Central Registry on a regular schedule to acquire refurbished DNS data .
When you are typing a vane address, for example, “ www.indabaa.com ”, your browser will ping the internet servicing provider and they will receive the DNS linked to the domain name which translates it into the TCP/IP address .
This is how it establishes connection with the web site. meanwhile, your Mac has been simultaneously creating a cache file in casing you might have to re-visit the locate again .

Hosts file
The Hosts file is very exchangeable to DNS. Both of them know where everything is traversing on the internet .
It is very utilitarian because you can manually override the preexistent information of DNS with this manoeuver arrangement file. This file consists of lines of text of IP addresses and many server names .
If you are having trouble with spyware and ad networks while browsing, use the Hosts file to block them by zeroing out their information science addresses. Put “ 0.0.0.0 ” and then the name of the knowledge domain you want to block .
How to Edit Your Mac Hosts File in macOS High Sierra

How to Edit Mac Hosts File in macOS High Sierra

The identical first measure of this process is to know where the Hosts file lie in your Mac. To work in the finest possible way, use the Terminal application. It lies in the “ Utilities ” folder of your Mac.

Gather the IP address of the device you will like to send your Mac ’ s data to or the sphere names you want to block .
You can besides search in the “ Spotlight ” for Terminal or find it in the Finder from dock. Follow the steps below :
Step #1: Open “ Finder ” window .
Open Finder Window
Step #2: Click on “ Applications ” from the Sidebar .
Click on Applications
Step #3: Double-click on “ Utilities ” .
Click on Utilities
Step #4: Double-click on “ Terminal ”. You will be asked to enter your admin Password and enter a command in order to open the Nano text editor program .
Click on Terminal
Type “ sudo nano /etc/hosts ” and hit “ Return ” .
again insert your Admin Password which you use for login and hit “ Enter ” .
now you are inside the Nano Text Editor. In this window, at the buttocks you will see many alphabets with the function they are assigned to .
If you want to add any device or a web site name, move the cursor with the arrow key to settle it beside the text and start typing .
In sheath, you want to map an IP address on your local network and impute it to a knowledge domain, type the IP address and hit “ Tab ” and then write the knowledge domain name .
If you want your Mac to keep away from certain sites, use the IP address “ 127.0.0.1 ”. This means, you can besides make certain that it won ’ deoxythymidine monophosphate go to its planned site. even if your router is set to any different IP address, 127.0.0.1 will traverse your Mac back to its default Hosts file settings .
After you are finished configure, weight-lift and hold “ Control ” and “ O ” keys together to save the file and then press “ Control ” and “ X ” keystone at the same time to passing .
Type “ sudo killall -HUP mDNSResponder ” and hit “ Enter ” at the command lineage. This command is for removing your Mac ’ s DNS cache information so that it doesn ’ thyroxine get puzzled with the changes made to the Hosts File.

The manual functionality of the Hosts File is the main advantage over the automatize DNS program. Just remember, because you have modified the Hosts file, the changes might have to be set to its default country in rate to ensure your Mac will perform well .
Also Check: How to Reset and Flush DNS Cache in macOS Sierra
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