OPIELOGIN(1)

NAME
opielogin - Replacement for login(1) that issues OPIE challenges.

SYNOPSIS
opielogin [ -p ] [ -r hostname | -h hostname | -f username

| username ]

DESCRIPTION
opielogin provides a replacement for the login(1) program that provides OPIE challenges to users and accepts OPIE responses. It is downward compatible with the keylogin(1) program from the Bellcore S/Key Version 1 distribution, which, in turn, is downward compatible with the login(1) program from the 4.3BSD Net/2 distribution.

OPTIONS

-p  By default, login discards any previous environment. The -p option disables this behavior.

-r  Process remote login from hostname.

-h  The -h option specifies the host from which the connection was received. It is used by various daemons such as telnetd(8). This option may only be used by the super-user.

-f  The -f option is used when a user name is specified to indicate that proper authentication has already been done and that no password need be requested. This option may only be used by the super-user or when an already logged in user is logging in as themselves.

username
    The user name to log in as.

EXAMPLE

wintermute$ opielogin

login: kebe

otp-md5 499 wi43143

Password: (echo on)

Password:SLY BLOB TOUR POP BRED EDDY

            Welcome to wintermute.

wintermute$

FILES

/etc/opiekeys -- database of information for the OPIE system.

/etc/opieaccess -- list of safe and unsafe networks and masks to go with them.

$HOME/.opiealways -- presence makes OPIE for logins mandatory for the user.

SEE ALSO
login(1), opie(4), opiekey(1), opiepasswd(1), opieinfo(1), opiesu(1), opieftpd(8), opiekeys(5), opieaccess(5)

AUTHOR
Bellcore's S/Key was written by Phil Karn, Neil M. Haller, and John S. Walden of Bellcore. DES key crunching contributed by Marcus J. Ranum of TIS. OPIE was created at NRL by Randall Atkinson, Dan McDonald, and Craig Metz. S/Key is a trademark of Bell Communications Research (Bellcore).

CONTACT
NRL OPIE is discussed on the Bellcore "S/Key Users" mailing list. To join, send an email request to:

skey-users-request@thumper.bellcore.com

For comments or bug reports relating to NRL OPIE, send email to:

opie-bugs@itd.nrl.navy.mil