Step 1:

Adding proxy Settings

Step 2:

Download and install Firefox

Step 3:

Configure Firefox

1. Open Firefox and click Settings on the menu bar.

2. Open Network Settings and click Settings.

3. Select Manual Settings and fill in the proxy IP address and port in the dialog box.

4. Check "Proxy DNS when using Socks v5" and confirm.

5.  After completing the above steps, the proxy succeeds.