Dialback; Troubleshooting - Lantronix SCS Reference Manual

Security

11.8.6 Dialback

An SCS must be configured to prevent all users from connecting with the exception of two users, sam and
paul. When sam and paul attempt to connect to the SCS, the modem must dial them back to verify their
identities.
The modem is connected to SCS port 2, and there isn't a corresponding modem profile. The generic modem
profile must be used. The following example assumes that modem profile type 3 is the generic modem
profile (Use the List Modem command to view available modem profiles).
Figure 11-70: Enabling Modem Handling/Selecting a Modem Type
Local>> DEFINE PORT 2 MODEM ENABLED
Local>> DEFINE PORT 2 MODEM TYPE 3
%Info: Port speed changed to 57600.
%Info: Port flow control changed to CTS.
The following commands are used to configure dialback:

11.9 Troubleshooting

To troubleshoot authentication problems, use event logging. To configure event logging, use the Set/Define
Logging command, discussed on page 12-172.
The following example assumes the terminal is connected to the console port (port 1).
Local>> SET LOGGING DESTINATION CONSOLE
Local>> SET LOGGING AUTHENTICATION 4
Fri Jan 26 13:44:40 1996 SCS_00DD12: SYSTEM: notice: log closed
Fri Jan 26 13:44:40 1996 SCS_00DD12: SYSTEM : notice: syslog started
Fri Jan 26 13:44:49 1996 SCS_00DD12: AUTH: info: Denied Port 4 User john Password badpass Method Local
Fri Jan 26 13:45:27 1996 SCS_00DD12: AUTH: info: Granted Port 4 User john Password goodpass Method Local
Fri Jan 26 13:45:39 1996 SCS_00DD12: AUTH: notice: Port 4 user john privilege password denied.
Fri Jan 26 13:45:49 1996 SCS_00DD12: AUTH: notice: Port 4 user john privilege password granted.
Figure 11-71: Configuring Dialback
Local>> DEFINE PORT 2 DIALBACK ENABLED
Local>> DEFINE DIALBACK sam "123-4567"
Local>> DEFINE DIALBACK paul "867-5309"
Local>> DEFINE DIALBACK BYPASS DISABLED
Local>> LOGOUT PORT 2
Figure 11-72: Configuring Authentication Event Logging
11-33
Troubleshooting