Gateway AntiVirus Protection

[Grecko]

Hey all,
I'm doing a science project on protecting a network with a windows
gateway, and one of the things I am trying to do is to have the gateway
intercept all HTTP requests, download the content requested, run a virus
scanner over it, and then if its clean, passing it on to the client, or,
if it contains a virus, passing a different page onto the client.
Is there a program that will do this, or something close enough to this
that a person with little programming knowledge could hack the program
to do this?
Thanks!
Grecko



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