Tor

Via Cyrus Farivar, we learn that The Tor Project is reporting that the "Great Persian Firewall" is preventing people in Iran from connecting to circumvention tools such as Tor. The Tor Project reports:

Over the past 48 hours it seems the Great Persian Firewall is updating to attempt to block a number of circumvention tools, including Tor. Iranians and their diaspora have been reporting to us that Tor, Hot Spot Shield, UltraSurf, and Freegate are all experiencing connectivity problems from inside Iran to the outside world.

Read more on their site.