In my office network, all traffic goes through a squid proxy (proxy A). I have another squid proxy (proxy B) on a vps.
I can browse internet fine using proxy A when on office network and proxy B when I connect from my home.
However, I want to use proxy B from my office network. That is, I would like to tell firefox to use proxy B, but via proxy A. How to achieve this?
I am fine with any alternate web browser / custom script that would allow me to do so as well.