(assuming you only care about firefox, not email, dns lookups, chat, software updates, that script that calls wget or curl, your netflix live client, etc...)<p>Ugh.<p>If you're worried about security on your email or bank account or whatever, you need to use TLS whether you're at home, at work, or on an unencrypted WLAN. You still have a lot of risk at home and at work, since you don't have end-to-end control of a tcp request. And if you're doing that, a tunnel within a tunnel doesn't buy you anything.<p>If you're worried about people 'sniffing' traffic on a WLAN, and building up a profile on you that can somehow be used against you, you're better off using something like TOR instead of an Ad-Hoc web-only proxy. And even then you need to take a lot of care to make sure all of the web-enabled applications you use actually use the dang proxy.