Thread: Using VNC Viewer Over an SSH Tunnel [Step-By-Step]
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jmc8501 is offline jmc8501
2009-10-29 , 04:45
Posts: 129 | Thanked: 11 times | Joined on Jan 2009 @ New York, NY
#68
Originally Posted by allnameswereout View Post
As for your first question: If we assume your netmask is 255.255.255.0, yes. Some routers have option to still not allow traffic between WLAN and LAN.

As for your second question, short story: try adding -N flag to your SSH command and see what happens.

And the long story: What I meant with that b0rked statement is that, in that case you posted ssh client log, routing and portforwarding works, you are able to send and receive TCP packets to OpenSSH server port 2222. The SSH protocols match, the authentication succeeds... so you get far further than when it is stuck on no route to host.

..but then it immediately logs out. If it executed your port forwarding it'd stay connected until you quit it (or networking problem), and to kill the tunnel you'd use ^C (Ctrl+C). Instead, you get debug1: Exit status 1 (different than 0; 0 means no error), in this case usually problem is 1) login shell doesn't exist 2) or is set to /bin/false (or something similar). Check the OpenSSH's /etc/passwd and see if it is correct set. The -N flag will not execute the remote command and is recommended in situations like these.

@ Jay that reminds me, if you don't want to use OpenSSH to remotely log in to your computer to get a shell but do wish to use only port forwarding (ie. only want to use OpenSSH to run VNC server) you can harden OpenSSH server further. Worth it to discuss or not...?
@allnameswereout
I have found the "passwd" file on my laptop, but how do I set it correctly, "/bin/true" ?

And there is no "openssh" folder or "passwd" folder in the /etc on my N810 (although it does have an "openvpn" folder, a program which I've been trying to delete for some time..http://talk.maemo.org/showthread.php...063#post340063 )

I tried adding the "-N" at the end of the command, but I've gotten a different response this time - it says "connecting to host..." and the "connection timed out" Now, even if I remove the -N command, I get the same response.

As a side note, I tried using the bash shell on my laptop that comes with Copssh, and tried to ssh to a work computer, but it told me:

$ ssh mauricio@[known ip-address]
ssh: connect to host [known ip-address] port 2222: Connection timed out

This "[known ip-address]" is one that I connect to regularly using PuTTY (which I also have installed on my laptop) and it gives me no problems. I'm not sure if this is relevant, of course.

Thanks!

PS: I found a "last log" text file and a "wtmp" text file. The former was mostly blank, except for a few *random* characters and my IP address, and the second had many more random characters along with my username and my IP addresss floating around.