Hi, I installed libpam-otpw a few days ago and configured it as: --- /etc/ssh/sshd_config --- UsePrivilegeSeparation no ChallengeResponseAuthentication yes --- /etc/pam.d/sshd --- #@include common-auth auth required pam_otpw.so session optional pam_otpw.so Now when I login, it prompt me for the one time password. But if I just press Enter for three times, it asks me for normal password again. Is this correct, or my configuration is wrong? -- 竹密岂妨流水过 山高哪阻野云飞