"Google Drive for Mac/PC supports all unauthenticated proxies that are configured by the operating system. Your firewall rules should connect to the following hosts and ports so that users on your network can access Google Drive. Otherwise, they may be blocked or denied access.
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"Here is a demonstration of how ridiculously easy it will be. In two minutes, I demonstrate not just how to get around the filter, but 5 different ways to get around it."