Using tor in http proxied enviroment

[Alexandre Vieira]

Hello folks,

I work at a large office with hundreds of machines. We are able to
access the internet trough an http proxy (requires authentication)
which only speaks 80, 443, 3128, 8080. I choose tor because it uses
80/443, so it could bypass the http proxy.

The scheme is this:



PC[198.162.5.45] -> <internal network> -> HTTP PROXY[192.168.2.78] -> Web

The question is: Is there any program that will forward tor traffic
trough our authenticated http proxy?

Thank you for your help.
Nullpt