Protect Website edit

In case we face a major vandalism and have less resource to correct errors. Is there a way to protect the complete website at once?

Umm, can you please clarify? Pmlineditor  06:21, 27 January 2010 (UTC)Reply
That is block the entire website from editing for sometime.Ganesh J. Acharya 18:03, 27 January 2010 (UTC)Reply