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.TH PAM_GOOGLE_AUTHENTICATOR 8 "25 Feb 2011"
.\" disable hyphenation
.nh
.SH NAME
pam_google_authenticator \- PAM module for two-step verification
.SH SYNOPSIS
.B pam_google_authenticator.so
.SH CAVEATS
The current version requires the existance of ~/.google\-authenticator.
If the file does not exist for a user, the authentication module will fail.
Each user MUST create their secret key with google\-authenticator(1) PRIOR TO enabling this module.
When used with sshd remember to edit sshd_config:
ChallengeResponseAuthentication yes
.SH EXAMPLES
Add this line to /etc/pam.d/<FAVORITESERVICE>:
auth required pam_google_authenticator.so
If needed only for a certain group:
auth [default=1 success=ignore] pam_succeed_if.so quiet user ingroup <group>
auth required pam_google_authenticator.so
.SH "SEE ALSO"
google-authenticator(1)
http://code.google.com/p/google-authenticator/
/wiki/PamModuleInstructions
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