Multitech MR9600-100 Betriebsanweisung PDF herunterladen (Seite 43)

5 Security

Introduction

Note: This chapter does not apply to CommPlete Communications Server sites (HD8 modems),

which use RADIUS and TACACS+ for security.

MultiCommManager can provide an additional layer of security between your users and your

system. It can prompt users for a user ID and a password when they call in. If they pass that security

check, it can either connect them directly to the system or call them back, either at a fixed or a

changeable number, and log them in. It can let users in only at certain times of day, certain days of

the week, or only between certain dates. Also, it can require users to change their passwords after a

certain interval of time.

Access to security modems attached to particular hosts can be controlled by making users

members of particular modem groups. Also, callback users can be prompted for which host (i.e.,

which modem group) will call them back if the host select feature is enabled.

Callback Security

When a modem receives a call, the modem prompts the user for the assigned user ID and

password. This login information is sent to the control PC from the rack controller. The control PC

verifies the user’s login information. If the user ID or password is invalid, the control PC instructs

the system modem to prompt the user to enter the information again. If the user reaches the retry

limit, the line is disconnected and a fault is logged..

If the user ID and password are valid, and the user is in the security database as a pass-through

user, then a message is displayed to the user that the user is now connected to the host system. If

the user is a fixed callback user, then the user is placed in a queue at the control PC to be called back

after the callback timer has expired and a callback modem is free. If the user is a variable callback

user, then the user is prompted for a number to be called back at. After the user the number, the

user is placed in the same callback queue as the fixed callback users.

Each entry in the callback queue waits the number of seconds specified by the callback timer before

attempting to get a free callback modem to dial with. When a free modem is available, the modem

dials the number in the security record if it is a fixed callback, or the number entered by the user if

it is a variable callback (if the variable callback user presses E

NTER instead of typing a number, the

number in the user’s security record is used). If the number being called back is busy, or a

connection is not made, the entry is set to be retried after the number of seconds specified by the

callback timer. If callback fails after three retries, the entry is deleted from the queue. If the

connection is made, then the user is connected directly to the host.

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Multitech MR9600-100 Betriebsanweisung Seite 43