Hello, We have a leased line (up and down) and a satellite downlink to accelerate the access to the internet. We have ISA server installed and would like to deny any DIRECT access to the internet in such way that all clients should have proxy server enabled in their browsers and applications (MSN messenger for example). Is there any way to do this? Example: When disabling access to a user by its fake IP, ISA server denied it to access the internet from the browser. If the client disabled proxy server in his browser, so he will gain access to the internet through the direct connection (leased line). Thank you, -Fadi