On 13Sep2013 19:58, bruce <badouglas@xxxxxxxxx> wrote:
| Trying to setup a quick test to create a ssh tunnel between A and B,
| and running a test nc server over the ssh connection on port 7100..
|
| As far as I can tell, it should be a matter of setting up the port
| forwarding between A and B and then running the test server/client on
| the A and B machines..
|
| now, the tricky part, the target "B" machine is being run on a VM, so
| the port isn't 22..
|
| I used the following to setup the port forwarding:
|
| ssh -L 7100:74.142.196.218:7100 user@74.142.196.218 -p 50122
|
| so being on machine A, the local machine, I setup the ssh tunnel into
| machine B, where B is the VM, running ssh over port 50122
Please try to keep options to the _left_ of the non-options. I refer
here to your "-p 50122".
| this part appears to work.
Yes, but it forwards 127.0.0.1:7100 on machine A to 74.142.196.218:7100.
And...
| However, when I then run a test nc server on both machines using port
| 7100, I get the following:
|
| machine B:
| nc -l 7100
Ok. On machine B (the VM?) run:
netstat -an | grep 7100
What does it show? And what does:
ifconfig -a
show machine B has as its interface addresses?
Remember that the port forward at the remote end is running on machine B.
| machine A
| nc localhost 7100
|
| which causes the machine B to display a crash!!!!
| >>>channel 3: open failed: connect failed: Connection refused <<<
This is not a crash, just an error message. This just says that
machine B is not listening on 74.142.196.218:7100.
I think you have a machine C (the VM host) that runs the VM guest "B".
And that C's IP address is 74.142.196.218.
Machine B will not have the address 74.142.196.218.
Since "nc -l 7100" on a machine here listens on "*" (all interfaces,
no specific address), I would just connect to 127.0.0.1 on machine B:
ssh -L 7100:127.0.0.1:7100 user@74.142.196.218 -p 50122
Cheers,
--
Cameron Simpson <cs@xxxxxxxxxx>
I am a man of high calibre; that is to say, a large bore.
- Jef Poskanzer <jef@xxxxxxxxxx> <jef@xxxxxxxxxxxxx>
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