(CNN) -- The embattled Egyptian government early Tuesday restricted communications and travel ahead of what protesters are calling a "march of millions." Here's what the government has done so far:
-- Noor Group, an Internet service provider, has been shut down, according to the information ministry. The move essentially takes the country offline.
-- The government is also planning to shut down mobile phone networks before the march, the ministry said.
-- Security forces have been laying concrete barriers in front of strategic locations in central Cairo.
-- President Hosni Mubarak has ordered an indefinite train shutdown. "Will help prevent protests from reaching Tahrir Tuesday, plus further cripple economy," CNN's Ben Wedeman wrote in a message on Twitter. CNN
