|I've asked about firewalls before, but it was a long time ago.|
When I was using Windows 7 and dial-up Internet connection, I was
able to configure the Windows Firewall so that the ShieldsUP! test
of the first 1056 Internet service ports at GRC.com showed *all* of
them "stealthed" -- green squares in the grid. When I switched to a
3G wireless modem/router with built-in hardware firewall that I didn't
know how to configure, there was one port always shown as being
closed (blue) and one that was always open (red), if I recall correctly.
Now with a 4G modem/router from Sprint, also with a built-in firewall
that I don't know how to configure, attached to an Android 4.4.2 tablet,
ShieldsUP! shows 13 stealthed (green) ports, and all the rest of the
first 1056 ports are closed (blue).
I am now setting up my new Windows 10 Home HP notebook for use
with this same 4G modem/router. Ideally, all ports should show up in
the test as stealthed (green). But what I get seems to be a function
of the modem/router's built-in firewall, not the Windows Firewall.
What I want right at the moment is to completely disable Internet
connection for anything but the browser, both inbound and outbound.
I'm about to install the latest version of Firefox, so I plan to use that.
How can I use either Windows Firewall or the Sprint modem/router's
hardware firewall to block everything but browser traffic?
Sprint MiFi 500 LTE by Novatel Wireless
-- Jeff, in Minneapolis