[ale] port forwarding with nc

[James P. Kinney III]

The scenario:

take serial port data from /dev/ttyS14 on machineA and route it securely
with an ssh tunnel to machineB where it is picked up and put onto serial
port /dev/ttyS1

I have been trying to do it with a combination of nc and ssh as follows:

on machineA:
#!/bin/sh

TCP_PORT=26150
SERIAL_PORT=/dev/ttyS14
BAUDRATE=38400

while (true)
        do
        (stty $BAUDRATE -echo clocal raw pass8 ; exec nc -l -p
$TCP_PORT)  < $SERIAL_PORT > $SERIAL_PORT
done

followed by:

ssh -L 26150:machineB:26150 machineB
(ssh connection is with keys)

And on machineB the same script as above with SERIAL_PORT=/dev/ttyS1

I keep running into the issue of not being able to "share connections"
to port 26150 on machineA. Both nc and ssh want to lock it on their
connection. How do I get around this?

(stupid, ancient DOS app that can't be run over a nice fast network
line)


-- 
James P. Kinney III          \Changing the mobile computing world/
CEO & Director of Engineering \          one Linux user         /
Local Net Solutions,LLC        \           at a time.          /
770-493-8244                    \.___________________________./
http://www.localnetsolutions.com

GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics)
<jkinney at localnetsolutions.com>
Fingerprint = 3C9E 6366 54FC A3FE BA4D 0659 6190 ADC3 829C 6CA7
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