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UNIX for Dummies Questions & Answers
Can't open VirtualBox from Tera Term X11 error
Post 302616211 by Corona688 on Friday 30th of March 2012 03:50:50 PM
03-30-2012
Why would you want VirtualBox to connect its graphical interface to the telnet server of the wrong machine? 
Let me explain how SSH port forwarding works.
You tell SSH to forward a port on the remote host to a port on your local host.
When you connect to the remote server with SSH, the SSH server opens an extra port on the local host itself, waiting for you to connect to it.
When you connect to it, the SSH server forwards this back to the client, your client connects to whatever you told it to earlier.
So in effect, it creates a new port on the remote host, which connects it directly to X11 on your machine.
If you don't know what port number your X11 server is, you'll have to find out and forward it, since ordinary X11 forwarding doesn't seem to be working.
Let me explain how SSH port forwarding works.
You tell SSH to forward a port on the remote host to a port on your local host.
When you connect to the remote server with SSH, the SSH server opens an extra port on the local host itself, waiting for you to connect to it.
When you connect to it, the SSH server forwards this back to the client, your client connects to whatever you told it to earlier.
So in effect, it creates a new port on the remote host, which connects it directly to X11 on your machine.
If you don't know what port number your X11 server is, you'll have to find out and forward it, since ordinary X11 forwarding doesn't seem to be working.
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LEARN ABOUT FREEBSD
kf
KF(1) BSD General Commands Manual KF(1) NAME
kf -- securely forward tickets SYNOPSIS
kf [-p port | --port=port] [-l login | --login=login] [-c ccache | --ccache=ccache] [-F | --forwardable] [-G | --no-forwardable] [-h | --help] [--version] host ... DESCRIPTION
The kf program forwards tickets to a remote host through an authenticated and encrypted stream. Options supported are: -p port, --port=port port to connect to -l login, --login=login remote login name -c ccache, --ccache=ccache remote cred cache -F, --forwardable forward forwardable credentials -G, --no-forwardable do not forward forwardable credentials -h, --help --version kf is useful when you do not want to enter your password on a remote host but want to have your tickets one for example AFS. In order for kf to work you will need to acquire your initial ticket with forwardable flag, i.e. kinit --forwardable. telnet is able to forward tickets by itself. SEE ALSO
kinit(1), telnet(1), kfd(8) Heimdal July 2, 2000 Heimdal