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Re: XDMCP through a firewall w/ nat
- From: Alexander Gottwald <alexander dot gottwald at s1999 dot tu-chemnitz dot de>
- To: cygwin-xfree at cygwin dot com
- Date: Sat, 6 Mar 2004 00:01:42 +0100 (MET)
- Subject: Re: XDMCP through a firewall w/ nat
- References: <16456.47997.726000.253445@gargle.gargle.HOWL>
- Reply-to: cygwin-xfree at cygwin dot com
On Fri, 5 Mar 2004, Robert Mecklenburg wrote:
> I'm trying to connect to a linux machine with kdm and I'm having
> trouble. My configurations are:
>
> linux:
> Mandrake 9.2
> KDE
> ssh configured with X11Forwarding
>
> Windows XP:
> ICF disabled
> Latest Cygwin X (updated daily)
>
> Linksys Firewall/gateway/hub
>
> - I've successfully configured kdm for remote access and tested it
> from a cygwin host on the linux local lan.
>
> - I've correctly configured ssh (I don't think this matters) and can
> connect from the windows machine through the firewall to the remote
> host and can use ssh -X successfully. I realize this isn't exact
> relevant, but you never know what someone will ask about.
>
> - The firewall is doing nat (I don't know if this is what all
> firewalls do), so I have a linksys_ip and a windows_ip.
>
> - I've configured my local firewall to pass ports 6000-6020 through
> to my windows host.
>
> - I've tried these configurations unsuccessfully. With these
> I get no error, but no login window.
>
> XWin -query $remote_ip
> XWin -query $remote_ip -from $windows_ip
> XWin -query $remote_ip -clipboard -from $windows_ip
>
>
> With these I get the same error:
>
> XWin -query $remote_ip -from $linksys_ip
> XWin -query $remote_ip -clipboard -from $linksys_ip
> XWin -query $remote_ip -fp tcp/$remote_ip:7100 -clipboard -from $linksys_ip
You can only use from with a local address.
> XWin -query $remote_ip -fp tcp/$remote_ip:7100 -clipboard -from $windows_ip
>
> Could not init font path element tcp/207.88.121.38:7100, removing from list!
> Fatal server error:
> could not open default font 'fixed'
>
>
> I could be I'm not running a font server on port 7100, or that the
> port is inaccessible for some reason.
You can try with ping 207.88.121.38 if the host is reachable.
> I've read many of the posting in the archives and the faq. The faq
> says none of this will work through a firewall, but maybe it's out
> of date. I've noticed other posting from people who may have gotten
> this to work? Or have I misread them?
With the firewall I suggest using X11Forwarding.
ssh -o "X11ForwardingTrusted yes" -X linuxhost
You can then start a remote session with startkde or similar.
bye
ago@linuxtag
--
Alexander.Gottwald@s1999.tu-chemnitz.de
http://www.gotti.org ICQ: 126018723
Chemnitzer Linux-Tag 2004 - 6. und 7. März 2004
http://www.tu-chemnitz.de/linux/tag