By default Firefox it's not configured to browse the internet through a proxy server, you need to manually set up a proxy connection so that any connection that is made through firefox will go through the proxy server.
In this tutorial, you will learn how to configure a proxy server on Firefox.
Configure a proxy server on Firefox
To configure a proxy server on Firefox is very easy. First, you need to launch Firefox, by running the command below
Next, go to "Settings" by clicking to the hamburger icon at top right
Once you click to the Settings option, you will be taken to General window
On General window, scroll down to the end, and you should see the "Network Settings" option, and click to "Settings" button
Now you need to click to "Manual proxy configuration", enabling this option lets you set up your own proxy configuration.
Once "Manual proxy configuration" has been enabled, you can proceed to add the Proxy server.
To do this, simply enter proxy server on "HTTP Proxy" box, and port on "Port" box, and click to the "Ok" button to save changes.
If you want to use your proxy server for HTTPS connections too, then you need to enable the "Also use this proxy for HTTPS" option
Proxy server should be now added on your Firefox. If for some reason you don't seem to have internet access after, make sure that the Proxy server that you configured, allows internet access.
In this tutorial, you learned how to configure a proxy server on Firefox.
A proxy server connection is useful in cases when you want all the traffic that goes through your browser to go through the proxy server. For example, you could use a proxy server for browsing the internet