Re: Remote connections to X apps

[dsavage@peaknet.net]

Geez Casey. Pls re-read my original post. You'll find the answers to all
three questions there.
--Doc

> is X running on the windows machine? and did you launch the ssh session
> from within X?
>
>
> have you tried with a linux machine to rule out it being related to
> cygwin?
>
> Casey
>
>
> dsavage@peaknet.net wrote:
>> Preface: Steve has been helping me establish remote connectivity to my
>> home system(s). Unlike most users, I have a static external IP address.
>> The Linksys WRT54G router at the house forwards specified TCP/UDP
>> ports/services to internal machines using their internal (192.168.x.x)
>> addresses.
>>
>> My objective is to establish the capability to run X applications on my
>> home system(s) and have them display on any remote Linux, UNIX, or
>> Windows
>> system I choose. Thus far things have progressed to the point where I am
>> able to reliably connect to my main home server (lion) from my Windows
>> PC
>> at work using secure shell from a Cygwin bash prompt. While CLI ssh and
>> scp are good and useful, the ability to run graphical applications on my
>> home server with their X displays remoted to my location would be a
>> major
>> step up.
>>
>> I realize that using a Windows PC and Cygwin rather than a Linux laptop
>> adds additional complexity, but if I can get things working on a
>> Windows/Cygwin box then a Linux box would be a no brainer.
>>
>> But enough preliminaries. The next step is to get a simple X application
>> on the remote host to display on my local PC. I'm logged onto the home
>> server with the following connection:
>>
>>    $ ssh -X -Y -l <user> <ip_address>
>>    <user>@<ip_address>'s password: **************
>>    Last login: Wed Jul 18 12:12:12 2007 from <remote>
>>
>>    Red Hat Enterprise Linux Server release 5 (Tikanga)
>>    Wed Jul 18  12:41:49 CDT
>>    [<user>@lion] ~
>>    $
>>
>> Note that ssh's -X and -Y command line options allow X11 forwarding (see
>> 'man ssh'). I've started Cygwin's X server on the PC here at work and
>> leave it running in background ready to display any X session sent to
>> it.
>>
>> A simple X application to try would be gedit:
>>
>>    $ gedit testfile.txt
>>    cannot open display:
>>    Run 'gedit --help' to see a full list of available command line
>> options.
>>
>> Steve suggested I try running 'mkxauth' to create an .Xauthority file.
>> "On
>> which machine?", I hear you ask. Well, since there's no 'mkxauth' in
>> Cygwin, that leaves only the remote server (where gedit will actually
>> run). After reviewing the 'mkxauth --help' options, I type:
>>
>>    $ mkxauth -c <remote>
>>    creating file /home/<user>/.Xauthority ... done
>>    adding key for <remote> to /home/<user>/.Xauthority ... done
>>
>> OK... let's try gedit again:
>>
>>    $ gedit testfile.txt
>>    cannot open display:
>>    Run 'gedit --help' to see a full list of available command line
>> options.
>>
>> Sigh. I try setting the display explicitly in the command line:
>>
>>    $ gedit testfile.txt --display=<remote>
>>    cannot open display: <remote>
>>    Run 'gedit --help' blah blah blah
>>
>> What other setup/configuration requirements have I missed? For those who
>> might ask "Have you enabled X11 forwarding in the server's sshd_config
>> file?", the answer is yes. I have noted that /etc/services contains two
>> lines which refer to x11:
>>
>>    x11             6000/tcp        X      # the X Window System
>>    x11-ssh-offset  6010/tcp               # SSH X11 forwarding offset
>>
>> I thought about adding them to the Linksys's router's forwarding table,
>> but because the entire session is running in an ssh (22/tcp) tunnel, I
>> think both of these are "don't cares".
>>
>> Ideas or suggestions, anyone?
>>
>> --Doc
>>
>> -
>> To unsubscribe, send email to majordomo@silug.org with
>> "unsubscribe silug-discuss" in the body.
>>
>>
>
>
> -
> To unsubscribe, send email to majordomo@silug.org with
> "unsubscribe silug-discuss" in the body.
>
>


-
To unsubscribe, send email to majordomo@silug.org with
"unsubscribe silug-discuss" in the body.