Score:1

Ubuntu

SSH passwordless connetion from Ubuntu to Win10

koko

11/29/22, 8:05 AM

I am trying to establish passwordless ssh connection from Ubuntu 20.04 to Win 10. I installed new Win10 (downloaded from Microsoft site, no activated). I downloaded openssh from git (OpenSSH_for_Windows_8.6p1, LibreSSL 3.3.3) I created file for my win user user/.ssh/authorized_keys and copied (with scp) my public key from ubunutu machine to it. I checked that my key exists on remote machine.

sshd_settings: 
PubkeyAuthentication yes 
PasswordAuthentication yes  
AuthorizedKeysFile - tried default .ssh/authorized_keys, %USERPROFILES\.ssh/authorized_keys%, with no this parameter.

Regular ssh connection with password works fine. Firewall was turned off. I did same for establish ssh passwordless connection linux to linux - work fine.

I read a lot of articles: I have to create key, copy it to remote machine, reload sshd service and everything should work fine. For linux to linux it works as expected but linux to win10.

Should I have some extra settings? Should I have extra permissions? What did I do wrong? Could someone help me plz?

UPDATED: I did it. In MS docs said if user is admin you should place keys to another place %programdata%/ssh/administrators_authorized_keys but for me it did not work. And I found row in the bottom of sshd_setting about this requirements and just removed it. Now everything works fine and as expected.

0 + 8

ssh

windows

sshd

matigo

11/29/22, 8:13 AM

Just to confirm, the problem is with OpenSSH Server *on Windows*, correct?

koko

11/29/22, 8:19 AM

yes, I can not establish connection from Ubuntu to Windows.

marosg

11/29/22, 8:57 AM

"user/.ssh/authorized_keys and copied (with scp) my private key from ubunutu machine to it" you need to copy public key there, not private

koko

11/29/22, 8:59 AM

sorry, its mistake in explanation, I definitely copied public key

matigo

11/29/22, 9:09 AM

How are you connecting from Ubuntu? Are you including the key? For example: `ssh -i ~/.ssh/id_rsa [email protected]`

koko

11/29/22, 9:22 AM

I was connecting `ssh [email protected]`. I tried to use your variant - I got asked password

Johan Palych

11/29/22, 9:54 AM

Try it like this: ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null user@ip

koko

11/29/22, 10:08 AM

I got `Warning: Permanently added 'ip' (ECDSA) to the list of known hosts.` but I also got asked password. I think it is problem in Windows. I will try ti provide more info a little late.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: SSH passwordless connetion from Ubuntu to Win10

TH: การเชื่อมต่อแบบไม่มีรหัสผ่าน SSH จาก Ubuntu ถึง Win10

RO: Conexiune SSH fără parolă de la Ubuntu la Win10

RU: Беспарольное соединение SSH с Ubuntu на Win10

VI: Kết nối không cần mật khẩu SSH từ Ubuntu đến Win10

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