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website blocking issue - for my high school lab

MarcHelfand asked
Last Modified: 2011-10-19
hi, its magic marc here.

got a situation about blocking websites:
we have a sonicwall 170 model firewall, with the content filter enabled.

the students are using 'proxy servers' to get to websites we've blocked on the sonicwall, i.e. myspace.com
and im on top of blocking them as well, however one of them is as follows and i cannot seem to block it.

ive tried to enter the actual word hidebehind.net in the 'keyword blocking' section of the sonicwall, and that deosnt work properly.
also, ive attempted to block 'deny' the https services from outbound being allowed, but then the teachers and staff could not log into their emaiul accounts online for the school email systems, not the hotmail, gmail, ewtc.. as they use https protocol services...?

how can i use the hosts or lmhosts to simply send the browser to a blank page or something

so, my questions

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