8: Device Ports
SecureLinx SLC User Guide
63
Current port numbering schemes for Telnet, SSH, and TCP ports display on the left.
The list of ports 1-16 on the right includes the individual ports and their current mode.
Note:
To view additional ports, click the
17-32
button or the
33-48
button, as
appropriate.
Icons that represent some of the possible modes include:
Idle
The port is not in use.
The port is in data/text mode.
Note:
You may set up ports to allow Telnet access using the IP
Settings on the Device Ports – Settings page.
An external modem is connected to the port. The user may dial into
or out of the port.
Telnet in or SSH in is enabled for the device port. The device port is
either waiting for a Telnet or SSH login or has received a Telnet or
SSH login (a user has logged in).
To set up Telnet and SSH port numbering:
1. Enter the following:
Telnet/SSH/TCP In Port Numbers
Starting Telnet
Port
Each port is assigned a number for connecting via Telnet.
Enter a number (1025-65535) that represents the first port.
The default is 2000 plus the port number. For example, if
you enter 2001, subsequent ports are automatically
assigned numbers 2002, 2003, and so on.
Starting SSH Port
Each port is assigned a number for connecting via SSH.
Enter a number (1025-65535) that represents the first port.
The default is 3000 plus the port number. For example, if
you enter 3001, subsequent ports are automatically
assigned numbers 3002, 3003, and so on.
Starting TCP Port
Each port is assigned a number for connecting through a
raw TCP connection. Enter a number (1025-65535) that
represents the first port. The default is 4000 plus the port
number. For example, if you enter 4001, subsequent ports
are automatically numbered 4002, 4003, and so on.
You can use a raw TCP connection in situations where a
TCP/IP connection is to communicate with a serial device.
For example, you can connect a serial printer to a device
port and use a raw TCP connection to spool print jobs to
the printer over the network.
Note:
When using raw TCP connections to transmit binary
data, or where the break command (escape sequence) is
not required, set the Break Sequence of the respective
device port to null (clear it).
Caution:
Ports 1-1024 are RFC-assigned and may conflict with services
running on the SLC. Avoid this range.
2. Click
Apply
to save the settings.
