NAME
dialups, d_passwd — dialup security control
DESCRIPTION
dialups
and
d_passwd
are used to control the dialup security feature of
login
(see
login(1)).
If
/etc/dialups
is present, the first word on each line is compared
with the name of the line upon which the login is being performed
(including the
/dev/,
as returned by
ttyname()
(see
ttyname(3C)).
If the login is occurring on a line found in
dialups,
dialup security is invoked.
Anything after a space or tab is ignored.
When dialup security is invoked,
login
requests an additional password,
and checks it against that found in
/etc/d_passwd.
The command name found in the ``program to use as shell'' field of
/etc/passwd
is used to select the password to be used.
Each entry in
d_passwd
consists of three fields, separated by colons.
The first is the command name, matching an entry in
passwd.
The second is the encrypted password to be used for dialup security
for those users logging in to use that program.
The third is commentary, but the second colon is required
to delimit the end of the password.
A null password is designated with two adjacent colons.
The entry for
/usr/bin/sh
is used if no other entry matches the command name taken from
passwd.
FILES
- /etc/dialups
dial-in tty lines
- /etc/d_passwd
passwords
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