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Hello: I am a system administrator for a public library, and the kids here have learned to bypass our site blocking software (bluecoat) by using vtunnel. How can I block use of vtunnel? We are running windows 2003 server. 
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Hello: I am a system administrator for a public library, and the kids here have learned to bypass our site blocking software (bluecoat) by using vtunnel. How can I block use of vtunnel? We are running windows 2003 server. 

Help me block Vtunnel

Operating system security (OS security) is the process of ensuring OS integrity, confidentiality and availability. OS security refers to specified steps or measures used to protect the OS from threats, viruses, worms, malware or remote hacker intrusions. OS security encompasses all preventive-control techniques, which safeguard any computer assets capable of being stolen, edited or deleted if OS security is compromised, including authentication, passwords and threats to systems and programs.