Westermo IDW-90 AT User Manual
Page 58
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6620-3200
*wcb – callback security
The callback functionality makes the established link more secure. After an incoming call
the adapter will make a callback to either a preconfigured number or to the incoming
number. The callback can be protected by a password. The unit can also be configured
for a secure access without callback.
If the password is enabled, the calling part will be prompted for the password directly
after connection. When the password is entered correctly, the adapter will disconnect
the current link and make a callback after a preconfigured number of seconds (configura-
tor command: capa [default 3]).
If the unit is configured as ”secure access”, it will allow data only after the password is
correctly entered.
After 3 retries of entering wrong password or after 60 seconds, the link will be discon-
nected and the callback/secure access aborted.
The number to callback must be entered in the *wcbtab number table
(*wcbtab1, *wcbtab 2 or *wcbtab 3).
The passwords is stored in: *wcbpwd1, *wcbpwd2 or *wcbpwd3.
When making a callback to a number stored in *wcbtab, the password in *wcbpwd1 is
connected to the number in *wcbtab1 (and *wcbpwd2 to *wcbtab2 and *wcbpwd3 to
*wcbtab3)
A callback to an analogue modem can be done with ID90-V90 and by storing an ’#’
before the number in catab. (see also the catab command in this manual)
For an even more secure connection the *wcb can be combined with the acctab
command.
Callback control:
0:
callback disabled (default)
1:
callback enabled, No password needed, callback number only in position1 in
*wcbtab (wcbtab1)
2:
callback enabled, No password needed, callback to incoming number
3:
access security enabled, Password in one or more positions in wcbpwdx
(x= 1, 2 or 3). If a correct password is detected the connection is opened
without any callback
4:
callback enabled, Password in one or more positions in *wcbpwdx
(x= 1, 2 or 3), callback to number in wcbtab, (*wcbpwd1 corresponds
to *wcbtab1...)
5:
callback enabled, Password in one or more positions in *wcbpwdx
(x= 1, 2 or 3), callback to incoming number
6:
callback enabled, Password in one or more positions in *wcbpwdx
(x= 1, 2 or 3), callback to number that is entered after password check is OK.
see also the following commands: *wcbtab, *wcbpwd, capa, acctab