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Can MWG Stop UltraSurf?

As the heading asks, is there any way the MWG appliance (using MCP and WPAD) can prevent users from bypassing the proxy via UltraSurf?

Any assistance would be greatly appreciated.

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Re: Can MWG Stop UltraSurf?

I see that currently categorizes their main web site as "Anonymizers" with a risk score of 22.  I'm expect they've rated all of their proxies similarly, which we block by category so that we don't need to maintain a black list for this.

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Re: Can MWG Stop UltraSurf?

Thank you for the reply, John. The issue isn't that users have access to the UltraSurf website, it's that the UltraSurf application (which requires no actual installation) completely bypasses  the MWG proxy by creating and connecting to a proxy of its own, thus allowing for unrestricted access to the Internet. I can block the website without issue but I cannot block their proxy connections.

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