07-23-2008
Two possible solutions
(1) On many systems, the operator console does not require a logon. The console can only be connected to a specific port on the back of the computer, thus the thought that it would be secure.
So, if you have an operator console (or can connect a dumb terminal to the connection), you may be able to connect without a password. Once connected, you should be able to reset the root password.
(2) Reboot in single-user mode. Some systems allow a step-down to a run-level. Normally only one computer location can do this. You want to reboot to level 1 = single user. Again, because of the mode, there should not be any password prompting because of the underlying thought of physical security of the computer connection.
Perhaps one of these two can help you on your way?
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dialups(4) File Formats dialups(4)
NAME
dialups - list of terminal devices requiring a dial-up password
SYNOPSIS
/etc/dialups
DESCRIPTION
dialups is an ASCII file which contains a list of terminal devices that require a dial-up password. A dial-up password is an additional
password required of users who access the computer through a modem or dial-up port. The correct password must be entered before the user
is granted access to the computer. The set of ports that require a dial-up password are listed in the dialups file.
Each entry in the dialups file is a single line of the form:
terminal-device
where
terminal-device The full path name of the terminal device that will require a dial-up password for users accessing the computer
through a modem or dial-up port.
The dialups file should be owned by the root user and the root group. The file should have read and write permissions for the owner (root)
only.
EXAMPLES
Example 1: A sample dialups file.
Here is a sample dialups file:
/dev/term/a
/dev/term/b
/dev/term/c
FILES
/etc/d_passwd dial-up password file
/etc/dialups list of dial-up ports requiring dial-up passwords
SEE ALSO
d_passwd(4)
SunOS 5.10 4 May 1994 dialups(4)