This will cause problems for you if regular Tor is blocked as well. China has also blocked a number of bridges, and theoretically, a good IT staff could do the same. It will most likely not work in China and Iran because they possess technology capable of detecting Tor usage that doesn't rely on IP filtering. Note: This method only works if the firewall is blocking based on IP addresses. Bridges are a way to trick a firewall into thinking you're connecting to any old IP address when you're actually connecting to the Tor network. Tor has a public list of all of its entry relays, so it's not hard for a nation state or good IT person to have a firewall block connections to them. The way firewalls block Tor is usually through IP address blocking. The Tor web site contains more information on pluggable transports, but this site will give some information about how you can use Tor without getting into trouble at school, work, or anywhere else Tor is blocked or monitored. The Chinese government has gotten very good at detecting and blocking Tor and other programs like it. Warning: Using Tor in China will not work unless you use pluggable transports. The Tor code is open source and free to download, so if you want, you can get it and review it for security wholes.

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