HTTPS Proxy

Hi,

Our problem is that there is a number of standalone browsers that run in our LAN.

so users even they dont have administrator rights they are able to navigate Internet through the executables.

the problem is that they use the HTTP proxy under the HTTPS one, then the HTTPS traffic is not inspected and they avoid the company policies.

so i want to know if there is a way to force Symantec Web Gateway NOT to process HTTPS requests over the HTTP port.

Thanks

Best Regards