<!-- Reviewed by hazel 2013-02-13-->
====== Remote X: Windows to Linux ======

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====== Plain Ol' Vanilla Remote X11 ======
1) Install Xming **and** Xming-fonts
  * Download from [[http://sourceforge.net/projects/xming/files/]]

2) Add the Linux machine's DNS name(s) and/or IP address to the C:\Program Files\xming\X0.hosts file. File should look something like:
    Linux1.mydomain.com
    Linux1
    192.168.1.25

3) Start Xming
  * (NOT XLaunch)

4) Start the connection:
Connect to the Linux machine via ssh/telnet/rlogin/whatever and run:
     DISPLAY=WINDOWS_IP:0;export DISPLAY;APPLICATION_YOU_WANT_TO_RUN
     EXAMPLE: DISPLAY=192.168.1.10:0;export DISPLAY;xterm


Minimize the telnet session, do not close it.  If you close it, your X11 connection will close.

----

**PROBLEMS**

**PROBLEM:** "Xlib: connection to YOUR_IP refused by server" \\
**FIX:** Check the Xming log, it probably contains "Xming.exe: client 4 rejected from IP YOUR_IP". If so, 
  - close Xming
  - Make sure that the DNS names and/or IPs are in the C:\Program Files\xming\X0.hosts file
  - restart Xming
**FIX2:** If problem is not fixed, restart Xming with the -ac option. \\

**PROBLEM:** Map starts but then I get a font error from OpenView. \\
**FIX:** Install the Xming-fonts onto your Windows box. \\

**PROBLEM:** When starting Xming, a Windows Security Alert pops up saying Windows Firewall has blocked this program. \\
**FIX:** Change Windows Firewall setting to allow Xming. \\
**FIX2:** Disable Windows Firewall by going to Services, setting Windows Firewall to MANUAL START and then stop the service. \\

**PROBLEM:** Cannot connect to Xming and I have checked all of the above. \\
**FIX:** When starting Xming as display 0, Windows Firewall does not complain. Check to see if Windows Firewall is blocking the connection. \\


====== Remote X11 Over SSH ======

1) Edit /etc/ssh/ssh**d**_conf on the **remote** (Slackware) machine.
     CHANGE:
     #X11Forwarding no
     
     TO:
     X11Forwarding yes
     
     CHANGE:
     #X11UseLocalhost yes
     
     TO:
     X11UseLocalhost yes

2) Install Putty (if it's not already installed).
     www.chiark.greenend.org.uk/~sgtatham/putty/

3) Open putty and fill in the "Host Name" box.

4) Under Category > Connection > SSH > X11 check the "Enable X11 forwarding" box.

5) Click the "Open" button to start the connection.

6) Log into the remote machine as you would do in a normal SSH session.

7) Start the X application from the command line, a window should open on your local machine with the application.

(It's basically a regular SSH session with putty but with X11 forwarding enabled.)


====== Sources ======
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<!-- * Original source: [[http://some.website.org/some/page.html]] -->
<!-- Authors are allowed to give credit to themselves! -->
  * Originally written by [[wiki:user:arfon | arfon]] 
<!-- * Contributions by [[wiki:user:yyy | User Y]] -->

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{{tag>howtos software X_Windows X11 author_arfon}}