I am running my linux server on Starband.

In order for the windows clients to load web pages with any speed it requires a program that acts as a proxy on the windows computers called As_agent. It configures the browser with a proxy on 127.0.0.1 port 9877.
I think it is connecting to one of their servers and when they request a page it automatically sends the entire page without multiple requests from the client browser.

The problem:

I am redirecting all www to port 1080 for content filtering, and then to squid. This proxy comes in on ports in the 3000 's to 4000 's range and bypasses my linux proxy as well as the filtering. I tried closing the port it was using and it just came in on another one without showing an access denied or anything else. No matter what I do it just finds another port to use. I guess it just scans for an open port.

What is a good way to make linux not allow this 127.0.0.1 tunnel or whatever it is.