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Security Server Configuration

4-10

4.6.5 Setting Up a Modem Service

The example displayed in Figure 4-18 is rather detailed, but once you have created a service or two, the

process should become largely intuitive. Remember that the Show/Monitor/List Services commands are

available to show you exactly what has been set up so far. If you are unsure or think you may have made a

mistake, delete the service (using Clear/Purge Service) and start from scratch. Refer to the upcoming

section for modem-specific configuration issues.

Figure 4-18: Modem Service Setup

Because many of the commands shown are similar to the ones in the previous example, only those that differ

will be explained:

The port is configured in much the same way as in the simple service example. XON/XOFF flow control

has been enabled for the modem. Access to the port is now dynamic so that both remote and local users can

access the modem to dial in or out. Modem control and password protection are both enabled.

Users who dial into the modem and connect to the Server’s serial port will have to enter the login password

due to the Define Port Password Enabled entry. This option can be omitted if not desired.

The service is set up as with the previous example, but a password has been enabled for both the service and

the port. Users who connect to the service locally or from another host on the network will have to enter the

service password (loco) to use the service to connect to the modem and dial out. This option can be omitted

if not desired.

Note: For more information on port settings, see Chapter 5.

Since modems do not log the user out when a connection is finished, you will probably want to have the

Break or Local key available so you can return to the ETS command line; see Set/Define Port Local for

more information. If you wish to disconnect from the modem session, use the Disconnect or Logout

command.

If a port and modem are to be used to allow dial in connections, you may wish to make the port Secure.

Secure status prevents dial-in users from changing the port characteristics and preventing other users from

being able to dial in properly.

4.7 Security

Security measures are available to monitor users and to restrict users from unwanted activity. Security can

be implemented server-wide, or it can be configured for individual ports as desired. The following section

discusses server-wide security measures; for port security measures, see Chapter 5, Ports.

Local> DEFINE PORT 1 PARITY NONE FLOW XON SPEED 19200

Local> DEFINE PORT 1 BROADCAST DISABLED

Local> DEFINE PORT 1 ACCESS DYNAMIC

Local> DEFINE PORT 1 NAME “modem” BREAK DISABLED

Local> DEFINE PORT 1 MODEM ENABLED PASSWORD ENABLED

Local> LOGOUT PORT 1

Local> SET SERVICE MODEM PORT 1 IDENTIFICATION “19200 BPS Modem”

Local> SET SERVICE MODEM PASSWORD “loco”

Local> SAVE SERVICE MODEM

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Lantronix MPS100 Guida di Installazione Pagina 46