I have a GUI program which has all necessary libraries to run on a rented Ubuntu host, but the host itself rejects attempt to set up X forwarding during the ssh connection using -X.
strace shows the UI program can run, but stops when it has no DISPLAY. I do not have root access to the rented host, it is not configured to forward X11 for normal users, and support for the host says they do not support it for users.
Is there any way to do X forwarding anyway, as I need it for just one critical program?
ssh -X -v merely reports:
OpenSSH_7.2p2 Ubuntu-4ubuntu2.4, OpenSSL 1.0.2g 1 Mar 2016
debug1: Remote: /usr/home/ipdb/.ssh/authorized_keys:2: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
debug2: x11_get_proto: /usr/bin/xauth list unix:10.0 2>/dev/null
debug1: Requesting X11 forwarding with authentication spoofing.
debug2: channel 0: request x11-req confirm 1
X11 forwarding request failed on channel 0
Is there any way to manually configure this, given that the local and remote hosts are both behind firewalls (so DISPLAY=$REMOTEHOST:0 won't work)? The host has an xauth and xhost that I copied from an Ubuntu host of the same dist version.
~/.ssh/rc runs during the connection, but does not have any arguments passed to it.
I suspect the reference to /usr/bin/xauth, which does not exist on the host, is the issue? Could I possibly run my own sshd and configure it with the correct xauth path?