We have a very snooty Head IT teacher so i alwasy wind him up by accessing youtube, or Newgrounds, thier his personal hates.
http://www.selfseo.com/find_ip_address_of_a_website.php
This is one i use, Type the address in here and you get the Ip, where the server is ect.
He has blocked every site, upto and including Google images, google maps, downgraded the flash to 7 unloaded CMD on most, the others have blocks, C: drive is locked+ hidden, everyhting we do is monitored.
He has a thing against me lol. I bring in my external Hdd with a full copy of my home pc, and boot that up instead. great thing is i can reconnect to the network through it , and access it as a admin, aww that really winds him up.
I unblock half a dozen sites, none that were security risks like downloaders ect, just Deviant art, locked the mature filter on ofc, an a few others but only for our year, were 17 ffs, were not going stare at porn in the middle of class -_-.
I got suspended untill he could patch up the hole i left ^^
He still never did it properly, he tried to lock Bios, which he did in the end, so a friend threw together a .bat which restarted the Pc and loaded my drive instead. hes a clever little bugger, i gave up with cmd notepad, after i lost files from lousy commading.
Oh his names Dameaon lol FTW!
Edit damm, someone beat me too it...
New idea,##
You cant use CMD can you?
The NOTEPAD it,
use the same commands and save the file as a .bat run it and its cmd command's