02-23-2004
one last thing... what if I wanted to ignore a standard subdirectory under each home directory? For example:
/home/user1/.dt
I want to ignore all of the .dt directories
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LEARN ABOUT DEBIAN
ykpamcfg
ykpamcfg(1) General Commands Manual ykpamcfg(1)
NAME
ykpamcfg - Manage user settings for the Yubico PAM module.
SYNOPSIS
ykpamcfg [-1 | -2] [-A] [-v] [-h]
OPTIONS
-1 use slot 1. This is the default.
-2 use slot 2.
-A action
choose action to perform. See ACTIONS below.
-v enable verbose mode.
ACTIONS
add_hmac_chalresp
The PAM module can utilize the HMAC-SHA1 Challenge-Response mode found in YubiKeys starting with version 2.2 for offline authentica-
tion. This action creates the initial state information with the C/R to be issued at the next logon.
The utility currently outputs the state information to a file in the current user's home directory (~/.yubico/challenge-123456 for a
YubiKey with serial number API readout enabled, and ~/.yubico/challenge for one without).
The PAM module supports a system wide directory for these state files (in case the user's home directories are encrypted), but in a
system wide directory, the 'challenge' part should be replaced with the username. Example : /var/yubico/challenges/alice-123456.
To use the system-wide mode, you currently have to move the generated state files manually and configure the PAM module accordingly.
EXAMPLE
First, program a YubiKey for challenge response on Slot 2 :
$ ykpersonalize -2 -ochal-resp -ochal-hmac -ohmac-lt64 -oserial-api-visible
...
Commit? (y/n) [n]: y
$
Now, set the current user to require this YubiKey for logon :
$ ykpamcfg -2 -v
...
Stored initial challenge and expected response in '/home/alice/.yubico/challenge-123456'.
$
Then, configure authentication with PAM for example like this (make a backup first) :
/etc/pam.d/common-auth (from Ubuntu 10.10) :
auth required pam_unix.so nullok_secure try_first_pass
auth [success=1 new_authtok_reqd=ok ignore=ignore default=die] pam_yubico.so mode=challenge-response
auth requisite pam_deny.so
auth required pam_permit.so
auth optional pam_ecryptfs.so unwrap
BUGS
Report ykpamcfg bugs in the issue tracker <http://code.google.com/p/yubico-pam/issues/list>
SEE ALSO
The yubico-pam home page <http://code.google.com/p/yubico-pam/>
YubiKeys can be obtained from Yubico <http://www.yubico.com/>.
yubico-pam March 2011 ykpamcfg(1)