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I have Windows 10 Anniversary Edition with "Bash on Ubuntu on Windows" installed and working. I'd like to be able to SSH into this Ubuntu instance, but although I have openssh-server installed and configured (and listening on port 2200), when I try to ssh to "localhost:2200", it tells me "Server unexpectedly closed network connection".

Has anyone been able to successfully accomplish this?

enter image description here

magicandre1981
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Mick
  • 1,961

5 Answers5

145

I got it to work; here's how.

Uninstalled ssh-server, reinstalled it and made sure it's started with

sudo service ssh --full-restart

Make sure you turned off root access and added another user in the config file.

I was able to connect to the subsystem on 127.0.0.1:22 as expected.  I hope this will help you.

Here's a screenshot.

  1. sudo apt-get purge openssh-server
  2. sudo apt-get install openssh-server
  3. sudo nano /etc/ssh/sshd_config and disallow root login by setting PermitRootLogin no

  4. Then add a line beneath it that says:

    AllowUsers yourusername

    and make sure PasswordAuthentication is set to yes if you want to login using a password.

  5. Disable privilege separation by adding/modifying : UsePrivilegeSeparation no

  6. sudo service ssh --full-restart

  7. Connect to your Linux subsystem from Windows using a ssh client like PuTTY.

D. Konstantinou
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Master Azazel
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39

The above answers came close, but I still had a Connection closed by 127.0.0.1 issue.

So starting over from scratch and supplying the --purge option when removing the sshd package (as I demonstrate below), solved my variation of this issue:

user$ sudo apt-get remove --purge openssh-server # First remove sshd with --purge option.
user$ sudo apt-get install openssh-server
user$ sudo vi /etc/ssh/sshd_config # **See note below.
user$ sudo service ssh --full-restart

** Change Port from 22 to 2222. (Just in case MS-Windows is using port 22).


Alternatively, you can disable MS-Windows' native SSH service if you


wish to use port 22.
Ramhound
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nmvega
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27

Since windows implementation doesn't provide chroot you need to modify the /etc/ssh/sshd_config

UsePrivilegeSeparation no

Also you will need to create a user using useradd command or so.

d1val
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5

I did everything as Master Azazel suggested and had the problem. When I connected to port 22 I was asked for a password, but the password I set in the Linux subsystem didn't work.

Solution #1:
change the SSH port in /etc/ssh/sshd_config and restart the SSH server in the subsystem

Solution #2:
disable/stop the "SSH Server Broker Services" in services control panel of Windows and restart the SSH server in the subsystem.

Kamil Maciorowski
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scotty86
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2

The reason why you cannot ssh to it is shown in the logging from the server:

chroot("/var/run/sshd"): Function not implemented [preauth]

The Linux subsystem doesn't seem to have chroot implemented and the ssh server needs it so the connection is not allowed.

Sami Kuhmonen
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