Create a blocklist using the Parental Controls feature of your Mac

1. Click the Apple icon on the menu bar, and then select System Preferences....

   

2. Select Parental Controls.

   

3. Choose Create a new user account with Parental Controls, and then click Continue.

   

4. Fill out the fields for the user account creation, and then click Create User.

   

5. Select Try to limit access to adult websites, and then click Customize....

   

6. Click the plus (+) icons so you can add websites to allow or block access.

   

Create a blocklist using a Host File

1. On the menu bar, click on Go then select Utilities.

   

   If the Go option is not available, either click on your desktop screen or the Finder icon.

2. Select Terminal.

   

3. Back up your hosts file:
   1. Type sudo /bin/cp /etc/hosts /etc/hosts-original in the Terminal window, and then press RETURN.
   2. Type your Administrator Password, and then press RETURN. The cursor will not move from its position as you type your password.

   

4. Type the command sudo nano -e /etc/hosts in the Terminal window, and then press RETURN. This will open the hosts file.

   

5. Using the arrow keys on your keypad, go to the bottom of the line. Type 127.0.0.1 and the website address you want to block.

   

6. Once you’re done adding the website address you want to block, press Command ⌘ + O on your keyboard to save the file, and then Command ⌘ + X to close the file.

Create a blocklist with Trend Micro Antivirus One

Antivirus One provides the easiest way to block websites on your Mac. With just three simple steps, you can block websites easily and effectively. Here's how:

1. Open Antivirus One:
   • On the upper-right corner of your screen, near the sound controls and the system clock, click the Antivirus One icon on the Menu bar.

     

   • Open your Antivirus One from your Launchpad.

     

2. Click on the Web tab, and then click the gear icon of the Websites on black list will always be blocked. option. The Manage Blocked Websites List window will appear.
3. Type the website you want to block inside the field, then click Add.