NCR S46, Руководство пользователя

Страница: 80 / 90

Modem Configuration in UNIX MP-RAS
2-48 MP-RAS Remote Support
When using call-through passwords, the modem does not connect to the server
system until the user at the remote system enters a valid call-through
password. Do not confuse this with the operating system login password. The
call-through password must be entered first and is in addition to any operating
system login password.
For modem setup for remote management, the call-through password provides
a level of security when the server is out-of-service (for example, when the
operating system is not running).
Call-back passwords are similar to call-through passwords except, a call-back
password requires a call-back phone number as well as a password.
With MP-RAS, there are two basic ways to set up either type of modem
password. One is to include the passwords in the modem initialization strings
in the /etc/uucp/Dialers file. You can edit the initialization string directly with
any editor program or modify it using the sysadm
menus under the following
tasks:
<network_services>
<modem_setup>
Another method for defining a modem password is to connect directly to the
modem using the cu utility and issue the appropriate modem commands.
For the Lasat Safire 288 modem, there are up to four passwords for use as
either call-back or call-through passwords. The format of the modem
command to set passwords is as follows:
AT*Px:password:call-back_number
where
•
x is the password number (0-3)
•
password is the modem password, comprised of at least 6 and no more
than 12 alphanumeric characters
•
call-back_number is the optional call-back phone number. The call-
back_number is comprised of up to 22 numbers and dialing characters
(dashes, commas and parentheses). When you set a call-through
password, omit the call-back number and its preceding colon.