Linux masquerading via M$ proxy
I am in a situation where access to the net is via Microsoft Proxy.
I would like to use my Linux box for net access but I have only seen client
software for the M$ Proxy for wintel workstation.
>From the advertising blurb it seams that the Microsoft Proxy will do
application proxy'ing and IP masquerading.
My question is:
1) Is the IP masquerading of the Microsoft product proprietary or is it
possible to get a linux box to masquerade via the MS proxy?
2) If the answer to question 1) is proprietary then is there any software in
the Linux domain that is compatible with this MS product?