02-22-2013
If you have the money for the tokens (I have carried many), the vendors help you get set up. I am not an SA focused guy.
Once, I proposed writing a free lightweight one where on top of the password, there was a challenge-response from a small database or flat file. You take a printout home and answer from that. Challenges get a one time use, so you need to generate a new set and print it out now and then. I guess you could put it in a file and automate it. What you have and what you know = 2 things. You might be able to set it up as a shell wrapper in passwd that demands the response before starting your shell.
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LEARN ABOUT REDHAT
fgetpwent
FGETPWENT(3) Linux Programmer's Manual FGETPWENT(3)
NAME
fgetpwent - get password file entry
SYNOPSIS
#include <pwd.h>
#include <stdio.h>
#include <sys/types.h>
struct passwd *fgetpwent(FILE *stream);
DESCRIPTION
The fgetpwent() function returns a pointer to a structure containing the broken out fields of a line in the file stream. The first time it
is called it returns the first entry; thereafter, it returns successive entries. The file stream must have the same format as /etc/passwd.
The passwd structure is defined in <pwd.h> as follows:
struct passwd {
char *pw_name; /* user name */
char *pw_passwd; /* user password */
uid_t pw_uid; /* user id */
gid_t pw_gid; /* group id */
char *pw_gecos; /* real name */
char *pw_dir; /* home directory */
char *pw_shell; /* shell program */
};
RETURN VALUE
The fgetpwent() function returns the passwd structure, or NULL if there are no more entries or an error occurs.
ERRORS
ENOMEM Insufficient memory to allocate passwd structure.
FILES
/etc/passwd
password database file
CONFORMING TO
SVID 3
SEE ALSO
getpwnam(3), getpwuid(3), getpwent(3), setpwent(3), endpwent(3), getpw(3), putpwent(3), passwd(5)
GNU
1996-05-17 FGETPWENT(3)