Hi Heiko,

On Do 23 Jun 2011 10:17:45 CEST Heiko Baumann wrote:

Hi Mike,

first at all sorry for my late answer. i was very busy.

yes i want to access a "share" on a server in the same subnet as the x2goserver. but not from my x2goclient machine via ssh reverse tunnel. i just want to access the "share" from within my x2goclient session. this is imho a standard use case for a terminal server environment. i can already do this with sshfs from the x2goserver via password authentication. but if the fileserver does not allow ssh password auth it is impossible. for sure i could create another ssh private key on the x2goserver and put the public key part on the fileserver. but this maybe not wanted if you have one identity (ssl cert/ssh key) for each user which should only be securely stored on a smartcard.


here is how it works:

Agent pid 8086
09:52:47 nb-heikob ~ # ssh -A terminalix-hbslx
terminalix-hbslx ~ # dir /tmp/ssh-tHRmT17232/
insgesamt 512
drwx------  2 root root  80 23. Jun 09:52 .
drwxrwxrwt 14 root root 496 23. Jun 09:52 ..
srwxr-xr-x  1 root root   0 23. Jun 09:52 agent.17232

terminalix-hbslx ~ # ssh remotix-hbslx
remotix-hbslx ~ # logout
Connection to remotix-hbslx closed.



if the local ssh agent socket does not exists, login via agent forwarding does not work:

terminalix-hbslx ~ # rm /tmp/ssh-tHRmT17232/ -r

terminalix-hbslx ~ # ssh remotix-hbslx
Permission denied (publickey,gssapi-with-mic,keyboard-interactive).
terminalix-hbslx ~ #

to get ssh-agent forwarding working with an old x2goclient version (before using libssh2) i've modified sources to start an additional persistent ssh tunnel to the x2goserver. this works for me but i guess it is a ugly hack and it only works with this old version.

hope this clears things up.

Yes it does. I have explicitly Cc:ed Alex to my reply so maybe he can take a look... It seems that x2goclient can use ssh-agent as a client, but does not pass the agent socket on to the server. This could indeed be improved!!!

Greets,
Mike




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