Date: Wed, 25 Jul 2007 09:49:30 -0500 From: Terry Todd <tlt@badger.tltodd.com> To: freebsd-questions@freebsd.org Subject: Re: ssh X11 forwarding not working on FreeBSD 6.2 Message-ID: <20070725094930.B71422@badger.tltodd.com> In-Reply-To: <20070725090135.A71422@badger.tltodd.com>; from tlt@badger.tltodd.com on Wed, Jul 25, 2007 at 09:01:35AM -0500 References: <20070724105922.A29729@badger.tltodd.com> <1185295685.2034.4.camel@yak.mseubanks.net> <20070724122340.A32857@badger.tltodd.com> <1185299662.2034.9.camel@yak.mseubanks.net> <20070724132925.A36540@badger.tltodd.com> <1185347784.8728.27.camel@yak.mseubanks.net> <20070725090135.A71422@badger.tltodd.com>
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I made a mistake in my last post. SSH X11 forwarding sets the DISPLAY variable to something like: localhost:10.0 It should not be the address of the Windows box because that bypasses X11 forwarding. Terry Todd On Wed, Jul 25, 2007 at 09:01:35AM -0500, Terry Todd wrote: > > Michael, > > Thanks for the directions. Using your method does work. However > your method bypasses X11 forwarding. > > > 6. Log into the FreeBSD machine using PuTTY. Set the DISPLAY > > environment variable equal to the IP address and display of the XP > > machine. The command I used was: > > > > export DISPLAY=192.168.xxx.xxx:0 > > What I want to get working is X11 forwarding where you don't set > the DISPLAY variable explicitly. With X11 forwarding the DISPLAY > variable is automatically set to something like, > [IP address of Windows box]:0.0. > > Terry Todd > > > On Wed, Jul 25, 2007 at 12:16:24AM -0700, Michael S. Eubanks wrote: > > On Tue, 2007-07-24 at 13:29 -0500, Terry Todd wrote: > > > On Tue, Jul 24, 2007 at 10:54:22AM -0700, Michael S. Eubanks wrote: > > > ... > > > > Question. How many X servers do you have running? Are you logged into > > > > a window manager when you are attempting to connect? > > > > > > > > > > Only one instance of Xming is running on the Windows XP system. > > > I am using PuTTY to connect to the FreeBSD system and the other > > > systems. The other systems all work. FreeBSD X11 forwarding does > > > not work. It is an off the shelf standard install of 6.2. > > > > > > Manually setting the DISPLAY variable on the FreeBSD system to > > > [IP address of Widows XP system]:0.0 will allow it to work but > > > that's not what I want to do here. I want it to automatically > > > forward the X11 session through ssh like it does when connecting > > > to the FC6 system. > > > > > > Terry Todd > > > > > > > Okay. I was able to get it running. I received a slightly different > > error when I tried running an application the first time. My error is > > from Xming and displays as follows (using X forwarding): > > > > AUDIT: Tue Jul 24 23:47:34 2007: 608 C:\Program Files\Xming\xming.exe > > client 4 rejected from IP 192.168.10.101 > > > > This error simply means to add the ``-ac'' option to the Xming desktop > > shortcut. Let me walk you through what I did. Before I begin, I'm > > using 6-STABLE (now on 6.2) with Xorg 7.2. > > > > > > QUICK INSTRUCTIONS > > 1. Make sure to install Xming using both the Xming installer program > > and Xming fonts installer. > > > > 2. Modify the Desktop Xming shortcut to include the following > > arguments: ``:0 -clipboard -multiwindow -ac''. The ac option accepts > > client requests and quells the error that I had above. > > > > 3. Start Xming using the shortcut you just created > > > > 4. I'm going to guess that you may leave your sshd_config file the way > > it is - I did. > > > > 5. Install the Xming Portable PuTTY package. Make the changes shown to > > the PuTTY configuration as shown here before you connect to the FreeBSD > > machine (NOTE the X11 forwarding to localhost:0 - I think this is how > > you said your config was): > > > > http://www.straightrunning.com/XmingNotes/trouble.php > > > > 6. Log into the FreeBSD machine using PuTTY. Set the DISPLAY > > environment variable equal to the IP address and display of the XP > > machine. The command I used was: > > > > export DISPLAY=192.168.xxx.xxx:0 > > > > 7. Make sure your Windows Firewall is either turned off or allows > > incoming requests for Xming. > > > > 8. Execute a command like xeyes. It should show on the windows > > desktop. > > > > > > > > > > On Tue, Jul 24, 2007 at 10:54:22AM -0700, Michael S. Eubanks wrote: > > > > On Tue, 2007-07-24 at 12:23 -0500, Terry Todd wrote: > > > > > On Tue, Jul 24, 2007 at 09:48:05AM -0700, Michael S. Eubanks wrote: > > > > > ... > > > > > > Start by changing the following line from > > > > > > > > > > > > X11DisplayOffset 10 > > > > > > > > > > > > to > > > > > > > > > > > > X11DisplayOffset 1 > > > > > ... > > > > > > > > > > OK, I tried that. No difference. > > > > > > > > > > Here's what heppened on the FreeBSD 6.2 system: > > > > > $ > > > > > $ echo $DISPLAY > > > > > localhost:1.0 > > > > > $ > > > > > $ xhost > > > > > Xlib: connection to "localhost:1.0" refused by server > > > > > Xlib: PuTTY X11 proxy: wrong authentication protocol attempted > > > > > xhost: unable to open display "localhost:1.0" > > > > > $ > > > > > $ xhost + > > > > > Xlib: connection to "localhost:1.0" refused by server > > > > > Xlib: PuTTY X11 proxy: wrong authentication protocol attempted > > > > > xhost: unable to open display "localhost:1.0" > > > > > $ xterm > > > > > Xlib: connection to "localhost:1.0" refused by server > > > > > Xlib: PuTTY X11 proxy: wrong authentication protocol attempted > > > > > xterm Xt error: Can't open display: localhost:1.0 > > > > > $ > > > > > > > > Question. How many X servers do you have running? Are you logged into > > > > a window manager when you are attempting to connect? > > > > > > > > > > > > > > > > > > > > > > > > > > > > Here's what happens on the FC6 system: > > > > > $ echo $DISPLAY > > > > > localhost:13.0 > > > > > $ > > > > > $ xhost > > > > > access control disabled, clients can connect from any host > > > > > INET:terry-pc.egizone.com > > > > > LOCAL: > > > > > $ > > > > > > > > > > Terry Todd > > > > > > > > > > > > > > > On Tue, Jul 24, 2007 at 09:48:05AM -0700, Michael S. Eubanks wrote: > > > > > > On Tue, 2007-07-24 at 10:59 -0500, Terry Todd wrote: > > > > > > > I have installed Xming successfully on a Windows XP system. > > > > > > > It works OK to a FC6 system and an older UNIXware system. > > > > > > > > > > > > > > However when trying to connect to a FreeBSD 6.2 system with PuTTY > > > > > > > ssh it doesn't work. PuTTY has Enable X11 forwarding checked. > > > > > > > > > > > > > > Here's what I get: > > > > > > > > > > > > > > $ > > > > > > > $ xhost > > > > > > > Xlib: connection to "localhost:10.0" refused by server > > > > > > > Xlib: PuTTY X11 proxy: wrong authentication protocol attempted > > > > > > > xhost: unable to open display "localhost:10.0" > > > > > > > $ > > > > > > > > > > > > > > What can be wrong? > > > > > > > > > > > > > > I have ssh configured as follows: > > > > > > > # grep X11 /etc/ssh/* > > > > > > > /etc/ssh/ssh_config:ForwardX11 yes > > > > > > > /etc/ssh/ssh_config:ForwardX11Trusted yes > > > > > > > /etc/ssh/sshd_config:X11Forwarding yes > > > > > > > /etc/ssh/sshd_config:X11DisplayOffset 10 > > > > > > > /etc/ssh/sshd_config:X11UseLocalhost yes > > > > > > > > > > > > > > > > > > > Start by changing the following line from > > > > > > > > > > > > X11DisplayOffset 10 > > > > > > > > > > > > to > > > > > > > > > > > > X11DisplayOffset 1 > > > > > > > > > > > > According to the sshd_conf man page, looks like the number should be set > > > > > > to the display that you want to forward (the first available display). > > > > > > > > > > > > > > > > > > > Here is the Xming log file: > > > > > > > Welcome to the Xming X Server > > > > > > > Vendor: Colin Harrison > > > > > > > Release: 6.9.0.24 > > > > > > > FreeType2: 2.3.0 > > > > > > > Contact: http://sourceforge.net/forum/?group_id=156984 > > > > > > > > > > > > > > C:\Program Files\Xming\Xming.exe :0 -ac -clipboard -multiwindow > > > > > > > > > > > > > > XdmcpRegisterConnection: newAddress x.x.x.x > > > > > > > winPrefsLoadPreferences: C:\Program Files\Xming\Xmingrc > > > > > > > LoadPreferences: Done parsing the configuration file... > > > > > > > winAdjustVideoModeShadowGDI - Using Windows display depth of 32 bits per pixel > > > > > > > winAllocateFBShadowGDI - Creating DIB with width: 1600 height: 1200 depth: 32 > > > > > > > winInitVisualsShadowGDI - Masks 00ff0000 0000ff00 000000ff BPRGB 8 d 24 bpp 32 > > > > > > > glWinInitVisuals:1511: glWinInitVisuals > > > > > > > init_visuals:1055: init_visuals > > > > > > > null screen fn ReparentWindow > > > > > > > null screen fn RestackWindow > > > > > > > InitQueue - Calling pthread_mutex_init > > > > > > > InitQueue - pthread_mutex_init returned > > > > > > > InitQueue - Calling pthread_cond_init > > > > > > > InitQueue - pthread_cond_init returned > > > > > > > winInitMultiWindowWM - Hello > > > > > > > winInitMultiWindowWM - Calling pthread_mutex_lock () > > > > > > > winMultiWindowXMsgProc - Hello > > > > > > > winMultiWindowXMsgProc - Calling pthread_mutex_lock () > > > > > > > glWinScreenProbe:1390: glWinScreenProbe > > > > > > > fixup_visuals:1303: fixup_visuals > > > > > > > init_screen_visuals:1336: init_screen_visuals > > > > > > > (--) 5 mouse buttons found > > > > > > > (--) Setting autorepeat to delay=500, rate=31 > > > > > > > (--) winConfigKeyboard - Layout: "00000409" (00000409) > > > > > > > (--) Using preset keyboard for "English (USA)" (409), type "4" > > > > > > > Could not init font path element C:\Program Files\Xming/fonts/misc/, removing from list! > > > > > > > Could not init font path element C:\Program Files\Xming/fonts/TTF/, removing from list! > > > > > > > Could not init font path element C:\Program Files\Xming/fonts/Type1/, removing from list! > > > > > > > Could not init font path element C:\Program Files\Xming/fonts/75dpi/, removing from list! > > > > > > > Could not init font path element C:\Program Files\Xming/fonts/100dpi/, removing from list! > > > > > > > Could not init font path element C:\Program Files\Xming\fonts\dejavu, removing from list! > > > > > > > Could not init font path element C:\Program Files\Xming\fonts\cyrillic, removing from list! > > > > > > > Could not init font path element C:\WINDOWS\Fonts, removing from list! > > > > > > > winInitMultiWindowWM - pthread_mutex_lock () returned. > > > > > > > winInitMultiWindowWM - pthread_mutex_unlock () returned. > > > > > > > winMultiWindowXMsgProc - pthread_mutex_lock () returned. > > > > > > > winInitMultiWindowWM - DISPLAY=127.0.0.1:0.0 > > > > > > > winMultiWindowXMsgProc - pthread_mutex_unlock () returned. > > > > > > > winMultiWindowXMsgProc - DISPLAY=127.0.0.1:0.0 > > > > > > > winProcEstablishConnection - Hello > > > > > > > winInitClipboard () > > > > > > > winProcEstablishConnection - winInitClipboard returned. > > > > > > > winInitMultiWindowWM - XOpenDisplay () returned and successfully opened the display. > > > > > > > winClipboardProc - Hello > > > > > > > DetectUnicodeSupport - Windows XP > > > > > > > winClipboardProc - DISPLAY=127.0.0.1:0.0 > > > > > > > winMultiWindowXMsgProc - XOpenDisplay () returned and successfully opened the display. > > > > > > > winClipboardProc - XOpenDisplay () returned and successfully opened the display. > > > > > > > > > > > > > > > > > > > > > Here is the PuTTY event log: > > > > > > > 2007-07-24 09:53:57 Looking up host "x.x.x.x" > > > > > > > 2007-07-24 09:53:57 Connecting to x.x.x.x port 22 > > > > > > > 2007-07-24 09:53:57 Server version: SSH-2.0-OpenSSH_4.5p1 FreeBSD-20061110 > > > > > > > 2007-07-24 09:53:57 We claim version: SSH-2.0-PuTTY_Snapshot_2005_05_03:r5737 > > > > > > > 2007-07-24 09:53:57 Using SSH protocol version 2 > > > > > > > 2007-07-24 09:53:57 Doing Diffie-Hellman group exchange > > > > > > > 2007-07-24 09:53:57 Doing Diffie-Hellman key exchange > > > > > > > 2007-07-24 09:53:57 Host key fingerprint is: > > > > > > > 2007-07-24 09:53:57 ssh-dss 1024 06:2a:c4:9c:e7:6a:f8:0d:5a:17:e9:b0:e3:79:1c:a5 > > > > > > > 2007-07-24 09:53:57 Initialised AES-256 SDCTR client->server encryption > > > > > > > 2007-07-24 09:53:57 Initialised HMAC-SHA1 client->server MAC algorithm > > > > > > > 2007-07-24 09:53:57 Initialised AES-256 SDCTR server->client encryption > > > > > > > 2007-07-24 09:53:57 Initialised HMAC-SHA1 server->client MAC algorithm > > > > > > > 2007-07-24 09:54:06 Access granted > > > > > > > 2007-07-24 09:54:06 Opened channel for session > > > > > > > 2007-07-24 09:54:06 Requesting X11 forwarding > > > > > > > 2007-07-24 09:54:06 X11 forwarding enabled > > > > > > > 2007-07-24 09:54:06 Allocated pty (ospeed 38400bps, ispeed 38400bps) > > > > > > > 2007-07-24 09:54:06 Started a shell/command > > > > > > > 2007-07-24 09:54:17 Received X11 connect request from 127.0.0.1:53737 > > > > > > > 2007-07-24 09:54:17 Opening X11 forward connection succeeded > > > > > > > 2007-07-24 09:54:17 Forwarded X11 connection terminated > > > > > > > > > > > > > > > > > > > > > > > > > -Michael S. Eubanks > > > > > > mse_software@charter.net > > > > > > > > > > > > > > -Michael S. Eubanks > > > > mse_software@charter.net > > > > > > > > > > > > > > > > _______________________________________________ > > > > freebsd-questions@freebsd.org mailing list > > > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > > > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > > _______________________________________________ > > > freebsd-questions@freebsd.org mailing list > > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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