This list initially consists of the host on which the X server is running as well as any remote machines listed in the file X n.hosts, where n is the display-number of the X server. xhost can be used to give (or deny) systems access to the server interactively, overriding the contents of X n.hosts files.Īn X server uses a host-based access control list for deciding whether or not to accept connections from clients on a particular machine. Running xhost without any arguments shows the current hosts allowed to access the server. $ xeyes or whatever remotely, will display on the Windows desktop >xeyes or whatever locally, will display on the Windows desktop on Windows machine 192.168.0.2, with remote machine 192.168.0.3, using display-number 0. To use the X server access control program, xhost ( host-based), from Command Prompt e.g. Remote X clients will not display, via PuTTY or Plink, without a correct localhost entry in /etc/hosts on the remote machine. Linux hint: you will also need this line in /etc/pam.d/su to forward xauth keys between users when calling su Also use pam_xauth to automatically forward xauth cookies between users when using su. If you are connecting to an Ubuntu Server Edition you may have xauth missing: you always need package xauth installed, on Linux/Unix, for X-Forwarding to work. either build '-with-default-path=etc:etc' or use environment files in '~/.ssh'). If a program displays from a PuTTY console but not from Plink then the default user PATH may need configuring/changing for the remote sshd server so that ssh can find it (e.g. Warning: I recommend you do not alter DISPLAY on the remote terminal, when using X-Forwarding.you may end up with working, but unencrypted, connections to a server!īoth XLaunch and Xmingrc make starting an X client via Xming's Plink easy. On that remote terminal, DISPLAY is automatically set to point at display 10 or above when X-Forwarding Use PuTTY to get a remote terminal on your Windows desktop and from that run the X clients you need, or run X clients via Plink using a stored session or a command. I recommend using both PuTTYgen and Pageant in that process as well as setting up some PuTTY Saved Sessions. You may therefore need to also add this to sshd_config AddressFamily inet Getting Xming-portablePuTTY (or standard PuTTY) working first, before using Plink, XLaunch or Xming, is always a good idea. XAuthLocation /usr/bin/X11/xauth this last keyword-argument pair maybe needed on AIXĭue to a bug in OpenSSH: disabling (or badly configuring) IPv6 on Linux/Unix can mess up X-Forwarding. Use PuTTY with SSH and X-Forwarding and enable it in the sshd server on the remote machine i.e.
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