Can't SSH to Arria 10 Dev Board

[Altera_Forum]

I just received our Arria 10 Dev Boards and I'm running through the quick start guide. I can get to the web interface and blink some lights and change the LCD message. I tried to SSH to it and the following happened: 

 $ ssh root@192.168.0.21The authenticity of host '192.168.0.21 (192.168.0.21)' can't be established. ECDSA key fingerprint is SHA256:6Roa+AUDD3RyzVleUJS04lWWt7tdVvD1LrZBkHTwADE. Are you sure you want to continue connecting (yes/no)? y Please type 'yes' or 'no': yes Warning: Permanently added '192.168.0.21' (ECDSA) to the list of known hosts. Connection to 192.168.0.21 closed by remote host. Connection to 192.168.0.21 closed.  All subsequent attempts end the same:  $ ssh root@192.168.0.21 Connection to 192.168.0.21 closed by remote host. Connection to 192.168.0.21 closed.  Any idea what's happening?

[Altera_Forum]

Try to add some -v's to get more verbose debug output: 

 ssh -vvv -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null root@192.168.0.21  You can also see if you get any response from the server using telnet or netcat: nc 192.168.0.21 22  You should see something like: SSH-2.0-OpenSSH_7.5p1-hpn14v12  depending upon the ssh version you hav running on your board.

[PJais1]

Hello , i am facing same error.On entering the command :

 ssh -vvv -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null root@192.168.1.10

OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: /etc/ssh/ssh_config line 19: Applying options for *

debug2: ssh_connect: needpriv 0

debug1: Connecting to 192.168.1.10 [192.168.1.10] port 22.

debug1: Connection established.

debug3: Incorrect RSA1 identifier

debug3: Could not load "/home/bmit/.ssh/id_rsa" as a RSA1 public key

debug1: identity file /home/bmit/.ssh/id_rsa type 1

debug1: identity file /home/bmit/.ssh/id_rsa-cert type -1

debug3: Incorrect RSA1 identifier

debug3: Could not load "/home/bmit/.ssh/id_dsa" as a RSA1 public key

debug1: identity file /home/bmit/.ssh/id_dsa type 2

debug1: identity file /home/bmit/.ssh/id_dsa-cert type -1

debug3: Incorrect RSA1 identifier

debug3: Could not load "/home/bmit/.ssh/id_ecdsa" as a RSA1 public key

debug1: identity file /home/bmit/.ssh/id_ecdsa type 3

debug1: identity file /home/bmit/.ssh/id_ecdsa-cert type -1

debug1: identity file /home/bmit/.ssh/id_ed25519 type -1

debug1: identity file /home/bmit/.ssh/id_ed25519-cert type -1

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.13

debug1: Remote protocol version 2.0, remote software version OpenSSH_7.8

debug1: match: OpenSSH_7.8 pat OpenSSH* compat 0x04000000

debug2: fd 3 setting O_NONBLOCK

debug3: load_hostkeys: loading entries for host "192.168.1.10" from file "/dev/null"

debug3: load_hostkeys: loaded 0 keys

debug1: SSH2_MSG_KEXINIT sent

and it hangs after this command.

Also by entering :  nc 192.168.1.10 22 , the terminal shows following output.

SSH-2.0-OpenSSH_7.8

Could you help with above query?

Thanks,

Priya