Steve Palocz wrote:
Question,Isn't it ok for the machine I am trying to hit and the sshd machine to not be the same? When I use the vNC viewer client they are not the same and that works fine. What I am trying to do over the Java client is similar to the illustration at http://www.uk.research.att.com/vnc/sshvnc.html
I think that the machine you are trying to hit and the ssh server are
not the same?
I have been using this config for some time now without problem.
Steve
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On
Behalf Of Steven S. Macfarlane
Sent: Tuesday, December 17, 2002 3:40 PM
To: [EMAIL PROTECTED]
Subject: Java client troubles...
Q: What might I try to get this connection to work over ssh?
Given: Windows2000 Professional running Mozilla v1.2.1 with Sun's JRE 1.4.0_02 accessing Linux box running RedHat v7.2 with X tunneling via OpenSSH v3.4p1 to Slackware 8.0 running OpenSSH v3.5p1 to variety of windows clients. All systems are running RealvNC v.3.3.6 for their respective platforms.
Details: Ok, I have been successfully piping vNC sessions through ssh for some time, using the vncviewer program. I started having too much fun with Mozilla v1.x and the tabbed browsing so I decided to start managing my client's PCs using the Java viewer. It works great on my local LAN, but when I start getting fancy with things like 'ssh -g -X -L
5814:192.168.1.14:5800 xx6.15x.1x7.x3x -v' I can get to the VNC Authentication window in my browser but when I enter the password, it fails with the Java exception following...
OpenSSH_3.4p1, SSH protocols 1.5/2.0, OpenSSL 0x0090602f
debug1: Reading configuration data /usr/local/etc/ssh_config
debug1: Rhosts Authentication disabled, originating port will not be trusted.
debug1: ssh_connect: needpriv 0
debug1: Connecting to xx6.15x.1x7.x3x [xx6.15x.1x7.x3x] port 22.
debug1: Connection established.
blah blah blah
OpenSSH_3.5p1
debug1: match: OpenSSH_3.5p1 pat OpenSSH*
Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.4p1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
blah blah blah
debug1: Connections to local port 5814 forwarded to remote address 192.168.1.14:5800
socket: Address family not supported by protocol
debug1: Local forwarding listening on 0.0.0.0 port 5814.
debug1: fd 4 setting O_NONBLOCK
debug1: channel 0: new [port listener]
debug1: channel 1: new [client-session]
debug1: send channel open 1
debug1: Entering interactive session.
debug1: ssh_session2_setup: id 1
debug1: channel request 1: pty-req
debug1: Requesting X11 forwarding with authentication spoofing.
debug1: channel request 1: x11-req
debug1: channel request 1: shell
debug1: fd 3 setting TCP_NODELAY
debug1: channel 1: open confirm rwindow 0 rmax 32768
blah blah blah
Then upon opening the browser:
steven@hoss:~$ debug1: Connection to port 5814 forwarding to 192.168.1.14 port 5800 requested.
debug1: fd 8 setting TCP_NODELAY
debug1: fd 8 setting O_NONBLOCK
debug1: channel 2: new [direct-tcpip]
debug1: channel 2: open confirm rwindow 131072 rmax 32768
debug1: channel 2: rcvd eof
debug1: channel 2: output open -> drain
debug1: channel 2: obuf empty
debug1: channel 2: close_write
debug1: channel 2: output drain -> closed
debug1: channel 2: read<=0 rfd 8 len 0
debug1: channel 2: read failed
debug1: channel 2: close_read
debug1: channel 2: input open -> drain
debug1: channel 2: ibuf empty
debug1: channel 2: send eof
debug1: channel 2: input drain -> closed
debug1: channel 2: send close
debug1: channel 2: rcvd close
debug1: channel 2: is dead
debug1: channel 2: garbage collecting
debug1: channel_free: channel 2: direct-tcpip: listening port 5814 for 192.168.1.14 port 5800, connect from 192.168.3.100 port 3602, nchannels
3
and here is the Java output...
java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at rfbProto.<init>(rfbProto.java)
at vncviewer.connectAndAuthenticate(vncviewer.java)
at vncviewer.run(vncviewer.java)
at java.lang.Thread.run(Unknown Source)
java.net.ConnectException: Connection refused: connect
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*machine windows1* ------ *machine*
*linux1* Runs vncviewer connecting to linux1:1, actually sees display of windows2 secure local network Runs ssh to linux2, fowards local port 5901 via link to windows2:5900
|
|
insecure public network
|
|
*machine*
*linux2* ---- *machine*
*windows2*
Runs sshd secure remote
network Runs WinVNC server as display 0
To do this, you need to run the following on machine linux1;
ssh -g -L 5901:windows2:5900 linux2
Lastly, remember that if you want to use the Java VNC viewer, you will need to forward the 58xx ports as well as the 59xx ports. See the FAQ for info on how these ports are used. _______________________________________________
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