On Fri, 12 Nov 2004, Nicholas Wisniewski wrote:
Hello, I'm trying ssh and tunnel to various machines. I can ssh just fine without tunnelling (i.e. ssh [EMAIL PROTECTED]). When I try to tell ssh to tunnel (ssh -X [EMAIL PROTECTED]), it prompts me for my password, and then hangs.
This is an X-related issue, and as such should go to the cygwin-xfree list. I'm redirecting my reply there -- please remove <cygwin at cygwin dot com> from further discussion.
I'm using Exceed as an X-windows client, not Xorg, so I don't think it is. In any case, I thought that all ssh cared about was whether there was a DISPLAY set or not.
When I look at the task manager, I see that sh.exe is taking up all of
^^^^^^
the available CPU. If I kill sh.exe from the task manager, ssh
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continues fine and I am connected and tunnelling.
Is this really sh.exe? Can you check whether this sh.exe process is running before you start ssh (e.g., compare the outputs of "ps -ef" before and after "ssh -X")?
before
bash-2.05b$ ps -ef
UID PID PPID TTY STIME COMMAND
Nick 2888 1 con 13:34:32 /usr/bin/bash
Nick 4052 1 con 13:37:33 /usr/bin/bash
Nick 236 4052 con 13:39:22 /usr/bin/psafter
bash-2.05b$ ps -ef
UID PID PPID TTY STIME COMMAND
Nick 2888 1 con 13:34:32 /usr/bin/bash
Nick 4052 1 con 13:37:33 /usr/bin/bash
Nick 3936 2888 con 13:40:16 /usr/bin/ssh
Nick 4012 3936 con 13:40:25 /usr/bin/sh
Nick 936 4052 con 13:40:29 /usr/bin/psI don't recall any option that would make ssh start a shell on the local machine. Are your ssh config files customized? Are you running keychain, or autossh, or any other ssh-related scripts?
I just uninstalled everything. I reinstalled nothing but the default packages and open-ssh. I'm running /usr/bin/ssh out of the box with no modifications. As you can see from the ps, sh is being started by ssh.
As I mentioned before, if I kill sh.exe from the task manager, everything works fine (i.e. it finishes logging in and I can display things from the remote machine).
Are you running Cygwin's ssh? Are you running /usr/bin/ssh, or is ssh
aliased to anything? Is your DISPLAY set when you run ssh.exe? Have you
tried trusted X forwarding ("ssh -Y")?
I'm running /usr/bin/ssh. ssh -Y has the same symptoms as ssh -X
bash-2.05b$ echo $DISPLAY localhost:0.0
I'm running XP pro, service pack 2. I've turned off the XP firewall and Sophos virus programs and still get the same behaviour. The same behavir happens on this machine with cygwin 1.5.11 as well.
Has anybody ever seen this before?
This doesn't sound like anything that's been reported before. Igor
Nick
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