[X2Go-Dev] X2go Mac client and Red Hat 7 server

[Stefan Baur]

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Hi Liz,

if my previous message with the $(which sshd) line didn't produce any
useful debug output, here's something else you could try.  However, if
you *did* get debug output from that previous step, there's no need to
try the following as well.  These are mainly connectivity tests.

On the client's commandline, execute:

ssh -L18935:128.149.23.102:22 128.149.23.102

If that connects, leave the ssh session running.

Then, change your X2GoClient session to point to
127.0.0.1:18935 instead of 128.149.23.102:22

Try and see if it connects.
(Expected result: Protocol mismatch error message)

Close X2GoClient, close the SSH session, then repeat it like this:

ssh -L18935:127.0.0.1:22 128.149.23.102
#           ^^^^^^^^^ note the different IP here

Try and see if it connects.
(Expected result: Protocol mismatch error message)

Again, close X2GoClient, close the SSH session.

Repeat with

ssh -L18935:127.0.0.1:18935 128.149.23.102
#                     ^^^^^ note the different port number here

verify that an SSHD is listening on the server by using the command

netstat -ant | grep ':18935' | wc -l

on the *server*. It should return a number greater than 0.

Now, try to connect X2GoClient using 127.0.0.1:18935 again.

- -Stefan

Am 08.05.2015 um 00:23 schrieb Real, Elizabeth (392K):
> RH7 server: setup  debug and set sshd port 18935
> 
> Client: configured x2goclient to connect to port 18935 but got
> connection refused x2go-INFO-8> "Starting connection to server:
> 128.149.23.102:18935" x2go-ERROR-2> "Connection Error(Cannot
> connect to 128.149.23.102:18935): Connection refused"
> 
> 
> 
> On 5/7/15, 12:41 PM, "Mihai Moldovan" <ionic at ionic.de> wrote:
> 
>> On 06.05.2015 11:55 PM, Real, Elizabeth (392K) wrote:
>>> Any other ideas?
>> 
>> No new information and you have done nothing wrong.
>> 
>> Looks like you will need to get your hands dirty.
>> 
>> Please start sshd manually as root on the RH 7 machine:
>> 
>> sudo sshd -ddd -p 18935
>> 
>> It should be running in the foreground, outputting debug
>> information and listening on port 18935 (feel free to change this
>> to whatever you feel suitable, it doesn't matter as long it as
>> the port is unused and not colling with anything else you might
>> use.
>> 
>> Then, configure x2goclient to connect to that port and start a
>> session.
>> 
>> You should see additional debug information printed by sshd...
>> hopefully hinting at what might have gone awry.
>> 
>> 
>> 
>> Mihai
>> 
> 
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