![]() ![]() See the above info on editing /etc/pam.d/sshd to fully disable static password auth, as PAM will otherwise allow a static password if OTPW fails (e.g. etc/ssh/sshd_config PasswordAuthentication yes If you wish to allow static password logins as well, ensure /etc/ssh/sshd_config contains a line like this: Note: Make sure not to add redundant or conflicting configuration lines to /etc/ssh/sshd_config! For instance, make sure there are not two UsePAM lines, etc. OTPW uses Keyboard-Interactive logins for SSH sessions, which are enabled by adding these lines: #auth required pam_securetty.so #disable remote rootĪuth include ssh-otpw #auth include system-remote-login #NOTE: This must be disabled to completely disable password logins. Here is the modified /etc/pam.d/sshd for reference: If you are disabling static password auth, comment out the 2nd bold line. Next, modify sshd's PAM configuration to include otpw. etc/pam.d/ssh-otpw auth sufficient pam_otpw.so Instructions for installing OTPW and configuring SSH to allow OTPW logins are below.Ĭonfiguration for SSH logins PAM configurationĬreate a PAM configuration file for otpw: This is especially useful in the context of Secure Shell, allowing a user to login from a public or shared computer using a single-use password which will never work again. ![]() One Time PassWord ( OTPW) is a PAM module allowing single-use passwords to login to a system. ![]()
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