Is there a way to tunnel SSH without a remote command?

Is there a way to tunnel SSH without a remote command?

Yes, just use /bin/false as shell and instruct the user to start the tunneling SSH process without executing any remote command (i.e. the -N flag for OpenSSH): Um, if the user doesn’t use -N, they have shell access. This really doesn’t solve the problem and is dangerous.

How to use SSH tunneling to access restricted servers?

So the “localhost” in the command above means “localhost” from the perspective of the remote server. To do this in the PuTTY application on Windows, select Connection > SSH > Tunnels.

How to restrict an SSH user to only allow SSH?

On the server side, you can restrict this by setting their user shell to /bin/true. This will allow them to authenticate, but not actually run anything since they don’t get a shell to run it in. This means they will be limited to whatever subset of things SSH is able to offer them. If it offers port forwarding, they will still be able to do that.

Can a SSH client connect to a remote server?

An SSH client connects to a Secure Shell server, which allows you to run terminal commands as if you were sitting in front of another computer. But an SSH client also allows you to “tunnel” a port between your local system and a remote SSH server. There are three different types of SSH tunneling, and they’re all used for different purposes.

How to start SSH tunneling in the background?

You just need to put the SSH’ing as a background task with the & sign : This will launch the ssh tunnelling in the background. But some messages may appear, especially when you try to connect to a non-listening port (if you server apache is not launched).

Where is the SSH subsystem for PowerShell located?

Create the SSH subsystem that hosts a PowerShell process on the remote computer: The default location of the PowerShell executable is c:/progra~1/powershell/7/pwsh.exe. The location can vary depending on how you installed PowerShell.

Why do I get messages in my SSH shell?

But some messages may appear, especially when you try to connect to a non-listening port (if you server apache is not launched). To avoid these messages to spawn in your shell while doing other stuff, you may redirect STDOUT/STDERR to the big void :

How to forward X over SSH to run graphics?

On the server side, X11Forwarding yes must specified in /etc/ssh/sshd_config. Note that the default is no forwarding (some distributions turn it on in their default /etc/ssh/sshd_config), and that the user cannot override this setting. The xauth program must be installed on the server side.

Why is SSH not forwarding the X11 connection?

If you run ssh and DISPLAY is not set, it means ssh is not forwarding the X11 connection. To confirm that ssh is forwarding X11, check for a line containing Requesting X11 forwarding in the ssh -v -X output. Note that the server won’t reply either way.

What happens if display is not set on SSH?

DISPLAY and XAUTHORITY will automatically be set to their proper values. If you run ssh and DISPLAY is not set, it means ssh is not forwarding the X11 connection. To confirm that ssh is forwarding X11, check for a line containing Requesting X11 forwarding in the ssh -v -X output.