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One Time Passwords/Single Use Passwords Howto [Archive] - Ubuntu Forums
ubuntuforums.org/archive/index.php/t-197350.html, posted 2008 by peter in communication howto linux security
I couldn't find any Ubuntu-specific info for getting one time passwords to work using OPIE. Turns out there is a needed option in sshd_config. Here are my notes that got me working on Dapper: