Serial Port - Lantronix SecureLinx Spider User Manual

Serial Port

After it has been used to set up the Spider's network parameters, the serial port may be
put to other use. A PPP connection may be established to use a modem or other serial
connection to log in to and operate the Spider. If you want to use the serial port to tunnel
through to the network side of the Spider, Telnet and/or SSH connections are available.
To configure the serial port:
1. Select Device Settings Serial Port from the Main Menu. The Serial Port Settings
window displays.
2. Modify the following fields:
Configuration
Login
Modem
Passthrough
Access
SecureLinx Spider User Guide
Select this option to use the serial port locally only to set up network
parameters or reset the unit.
Connect to the Spider via a dial-up or ISDN connection, using PPP.
Essentially, the Spider acts as an ISP which you dial in to. The
client system will need to be set up accordingly, for example using
the Windows Network Connection Wizard. Change the following
parameters as necessary:
Serial Line Speed: Most modems support 115200 bps.
Modem Init String: The initialization string sent out to set up the
modem. If you have a special modem or are going through a PBX
requiring an access sequence the string may be modified. Consult
the modem's manual on the AT command syntax.
Modem server and client IP addresses: As part of the PPP
handshake, IP addresses are assigned to the Spider and client
system.
The serial port may be used to connect to the target server's COM
port for integrated access to command line functions or used to
control a serial-interfaced peripheral. Telnet and SSH are network
protocols that enable a tunnel from the client system over the
network to the Spider's serial port. Once the port is set up, it may
be accessed through the web interface at the Telnet Console
window, or using a Telnet/SSH client to connect directly.
9: Device Settings
45