You can find in bottom of that page in my signature about local proxies.
Many people don’t understand what impact running a local scanning proxy really does to a firewall like sygate. Hope this update brings some more clear information :
The instructions how to disable that transparent proxy or how to configure a browser to webshield of course go outside the guide cause it is intended be to as short and clear as possible for newbies.
But too much avast there already I think. I used avast as an example of a a local proxy. Just hope it does not get people not knowing away because of that.