bypass proxy firewall

I suppose it's not an option for everyone, but personally I use VPN installed at my house to bounce me to the net, or alternatively, I use Remote Desktop in the same fashion to use my machine at home rather than the one I'm actually using.

It's probably not convenient for everybody and sometimes the available bandwidth is pretty low, but at least it works, provided the port for PTPP is open.

There are many proxy sites from where you can access blocked sites. all these sites does not even require signup or registration. You can just access the, & then enter the orkut or other site address in the web page & it will take you there.

You can try these sites
http://www.webproxysite.com
http://broxy.info
http://hidemyhead.us
http://sspeed.info
http://facelessbook.info
http://ipen.info
http://ripyou.com
http://www.azproxy.info
http://proxycommander.com

There are many more & I think these much will be more than enough.
Happy Lotting

Just Google "Tor bundle". It's a portable version of Firefox and Pidgin (just like Trillian) that routes through the Tor network. The beauty of the portable version is that it can be installed onto a flash drive. Voila.

i would advise against using this in your school or office. The trouble that would be caused if your network was infected by malware. Proxy's are there for a reason and you would most likely lose your job.

you can use ccproxy or something like that
hidemyass is good

try here:

http://www.adminsucks.com
http://www.gitudoang.com
http://www.october2009.tk