How to block a website

Step 1: In Windows, you can enable parental controls on child accounts. If your device doesn’t have one of those, you can set it up by navigating to Settings > Accounts > Family, and then selecting Add someone. Follow the on-screen instructions, and when you have a child account setup, continue with the steps below.

The navigation is slightly different on Windows 10, but you’ll still find all you need in the Accounts section of the Settings menu.

Windows isn’t the only operating system that allows you to monitor your child’s activities online. On macOS, it’s known as Screen Time. Here, you can do a wide range of things, including setting limits on how long you are allowed to use certain apps or sites, blocking certain websites outright, and viewing analytics on your screen time habits.

Step 1: Open System Preferences and click the button labeled Screen Time.

Step 2: If you haven’t turned on Screen Time before, you will have to do so now to continue. Next, you will want to select the profile you will want to adjust. All the users on that Mac should show up if you’re the admin, and any user connected to your Family Sharing account should appear here as well. Select which user you want from the drop-down menu in the top-left corner.

Step 3: Click the Content & Privacy button on the bottom left of the menu. Here, you can adjust a number of things, but look for the section labeled Web Content. There are three options here. Unrestricted Access is exactly what it sounds like, so you will want to select Limit Adult Websites. This will automatically filter out the most unseemly websites, but you can add any additional websites by clicking the plus sign that appears.

Step 4: If you really want to control what the user sees, select the Allowed Websites Only option. That means the user will only be able to use sites you approve of. Click Customize and add all the sites you approve of, and the user will be blocked from anything else.

Blocking specific websites in Windows is child’s play — and usually child-proof. It’s completely free, doesn’t require any additional software, and takes a few quick alterations to the Windows Hosts file on your computer. The Hosts file, a plain text file your operating system utilizes for mapping IP addresses and hostnames, can be used to redirect a domain name back to the local computer, essentially blocking the desired website. It’s a great way to restrict users from seeing content you don’t want them to see, regardless of the browser and the time of day.

However, keep in mind that you must have administrator privileges to change the file, and it can be a little technical. You can always undo the change if need be, but the process is a little more hands-on than the Windows and MacOS parental controls.

Step 1: Type “Notepad” into the desktop search bar and then right-click the app that appears. Then select Run As Administrator and click Yes. Then navigate to the host file by choosing File > Open and locating the file through that window. Navigate through to the Hosts file by going through C: > Windows > System32 > Drivers *> *Etc.  You may need to select All Files from the drop-down file format menu in that same File Explorer window.

Step 2: Open the Hosts file.

Step 3: In Notepad, you will see several lines of text used for mapping purposes. Underneath the last line of text — it should say something regarding a local host — enter 127.0.0.1 and press the spacebar. Next, type the web address of the website you want to block on the same line. For example, type 127.0.0.1 www.youtube.com to block all traffic from the popular video-sharing site.

Step 4: Continue to add websites you wish to block in this manner, each beginning with 127.0.0.1. followed by a space and the appropriate website. Make sure only to use “www” and avoid adding “http” unless you want to render the entry invalid. Do not alter any other text in the Hosts file.

Step 5: Once you’ve added the sites you want to block, click the File option in the upper-left corner, choose Save — do not change the name or save location — and ignore any warnings regarding editing the hosts file. Then close Notepad when finished.

Step 6: Open your favorite browser and test the results! You should automatically get a blank page whenever you attempt to access any of the sites on your blocked list. You may have to restart your browser and wait several minutes for the changes to take effect.

Blocking websites using macOS works similarly to blocking them using Windows. The process is free, relatively quick, and requires altering your Mac’s hosts file to redirect a specified domain name. It’s a simple process that will prevent users from seeing content you deem block-worthy across browsers, but one that can be reversed if you want to grant access to the sites in the future.

Step 1: Launch Terminal by accessing the main applications folder, clicking Utilities, and selecting the program from the resulting list. You can also do so by searching for the program in Spotlight.

Step 2: Now it’s time to make a copy of the hosts file just in case something goes awry. Type sudo /bin/cp /etc/hosts /etc/hosts-original on the Terminal command line to make a backup of the file in question. Hit Enter and type in your administrative password when prompted. It may appear as though the keystrokes aren’t being registered properly — i.e., your cursor won’t move — but rest assured that they are.

Step 3: Type sudo nano /etc/hosts and hit Enter on the Terminal command line to open up your hosts file in a nano box. Then, enter your administrative password when prompted.

Step 4: Once the hosts file is opened, you will see several lines of text used for mapping purposes. Underneath the last line of text — it should say something regarding a local host — enter 127.0.0.1 and press the spacebar. Next, type the web address of the website you want to block on the same line. For example, type 127.0.0.1 www.youtube.com to block all traffic from the popular video-sharing site.

Step 5: Continue to add websites you wish to block in this manner, each beginning with 127.0.0.1. followed by a space and the appropriate website. Ensure that you only use “www” and avoid adding “http” unless you want to render the entry invalid, and do not alter any other text in the hosts file.

Step 6: When finished, hold down the Control key and press O to save the changes. Then hold down the Control key and press X to exit the hosts file.

Step 7: Next, type sudo dscacheutil -flushcache and press Enter again to flush your existing cache and put the changes into effect. Alternatively, you can restart your computer.

Once you’re back up and running, open your favorite browser and test the results! You should automatically get a blank page whenever you attempt to access any of the sites on your blocked list.

There are a range of browser extensions for all the big-name browsers that make it convenient to block websites with some additional control. Here’s how.

Blocking all users, at all times, on all browsers can take some time using the above methods. Fortunately, your router doesn’t require any external software and is another fantastic tool that will grant you networkwide control over the blocking process. Although we cannot guarantee your router can block specified websites, most routers are equipped with some parental controls for restricting website access completely, during certain days of the week, or even during defined hours.

Step 1: Open the web interface on your router. As a general rule, you can gain access to your router if you input 192.168.1.1 in your browser’s address bar. Next, you’ll need to enter a username and a password, but the defaults can vary based on the router.