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Setting up mobile proxies in Firefox is easier than in Chrome-based browsers, because Firefox has its own network settings. The proxy set there applies only to Firefox and does not touch the rest of the system, so one computer can run Firefox through a mobile proxy and other programs directly.
Before you start, have the connection details at hand: address, port, protocol (HTTPS or SOCKS5), login and password. With LTESpace they are shown in your account after you choose a plan.
Where the proxy settings are
- open the menu with three lines in the top right corner and choose Settings;
- stay on the General page and scroll to the very bottom, to Network Settings;
- click Settings next to it;
- choose Manual proxy configuration.
HTTPS proxy
- enter the proxy address in HTTP Proxy and the port next to it;
- tick Also use this proxy for HTTPS, so secure sites go through the proxy too;
- leave the SOCKS field empty;
- click OK.
On the first request Firefox asks for the username and password of the proxy. You can save them so that the window does not appear every session.
SOCKS5 proxy
- enter the address in SOCKS Host and the port next to it;
- choose SOCKS v5;
- tick Proxy DNS when using SOCKS v5, otherwise site names are resolved through your provider and give away the real location;
- leave the HTTP Proxy field empty and click OK.
One limitation matters here: in this window Firefox does not ask for a login and password for SOCKS5. If your SOCKS5 proxy works with authorisation, use the HTTPS endpoint of the same proxy or an extension. FoxyProxy, for example, stores SOCKS5 credentials in Firefox — see FoxyProxy with mobile proxies.
Proxy only for some sites
The built-in settings send all traffic through the proxy, and the No proxy for field only excludes addresses. When the opposite is needed — the proxy only for selected sites — use an extension with rules. That is exactly what FoxyProxy does with patterns.
Close the WebRTC leak
WebRTC can show sites your real IP even when the proxy works. In Firefox it can be turned off completely: open about:config, find media.peerconnection.enabled and set it to false. Video calls in the browser will stop working, so for daily use a separate Firefox profile is handy. Details and a test are in how to disable WebRTC.
How to check that the proxy works
Open any IP checker. It should show the address of the mobile carrier, the country and city of the chosen GEO and a mobile network as the connection type. If the old IP is shown, check the port and protocol, the Also use this proxy for HTTPS option and whether an extension takes over the proxy settings.
Changing the IP
A mobile proxy changes its address by rotation. On an LTESpace private channel you change the IP by opening a special link or set it to change on a timer; a shared channel changes the address on its own, on a timer. Firefox keeps working without a restart. How it works is described in mobile proxies with rotation.
How to turn the proxy off
Return to Network Settings and choose No proxy or Use system proxy settings. Because the proxy lives only in Firefox, nothing needs to be undone in the system.
Summary
Firefox keeps the proxy inside the browser, which makes it convenient for separate work: HTTPS is set in HTTP Proxy with the HTTPS option ticked, SOCKS5 in SOCKS Host with proxy DNS on. For SOCKS5 with a login and for rules by site, use FoxyProxy. After setup, check the IP and WebRTC, and pick the proxy itself in the LTESpace plans.
