Unable to set ssh password

Silly question, are you trying to login first as root, or are you trying as loginuser?  

Also, when you're trying with an RSA key, I assume you have "Allow root login: Root access but only with SSH key" set?

Tim

Hi Tim. I connect using loginuser. Concerning key access, both passwords and keys are allowed for root.

Thanks for your help.

Daniel

The only things I can think of is either you're entering the wrong password or you're SSH session is connecting to a different host, i.e. you've configured a DNAT to forward port 22 to another IP address.  From the Webadmin, open the SSH server log file, do you see you're authentication attempts in there?  Try setting the password to something simple.  Also, since you're using a VM, does it allow you to login via console?

Tim

I tried by setting password to 123, still refused. I saw other people having same problem few years ago with 9-3 version. Sure that I'm on the right VM, I try to connect from host using the same internal IP which I access for Webadmin. Nothing in ssh server logs, only ssh serverstarted at ...

Here is the about of a verbos ssh connection from host:

debug2: key: /root/.ssh/id_rsa (0x562357af19b0)
debug2: key: /root/.ssh/id_dsa ((nil))
debug2: key: /root/.ssh/id_ecdsa ((nil))
debug2: key: /root/.ssh/id_ed25519 ((nil))
debug3: send packet: type 5
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering public key: RSA SHA256:0SGNcBf5fEt6V035N6rLxesoCnT3pw/jWwpou0RHqbs /root/.ssh/id_rsa
debug3: send_pubkey_test
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /root/.ssh/id_dsa
debug3: no such identity: /root/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /root/.ssh/id_ecdsa
debug3: no such identity: /root/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /root/.ssh/id_ed25519
debug3: no such identity: /root/.ssh/id_ed25519: No such file or directory
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
root@<hostIP address>password:

Console access is not possible (I use virsh console "VM_name"), nothing happend. Other VMs on the same server have console access without any problem. Is there perhaps another way to access the console ?

Daniel

TimHansen said:

Also, since you're using a VM, does it allow you to login via console?

Yes, I can connect to console as user root from within virt-manager, password 123 is accepted. So problem lies on ssh.

Hmmm, if you don't see anything in the SSH server log, I'm guessing the SSH connection isn't hitting the UTM.  You should see something similar to the below when you try to authenticate.  

sshd.log:2018:12:09-09:16:25 timhansen sshd[18141]: Failed password for loginuser from 192.168.2.10 port 41766 ssh2

Login via the VM console and run the following:

tcpdump -i any port 22

Try to connect via SSH, what does the output look like?  

Tim

Hello Tim,

you did show me the direction to look for and got the answer: I can connect to the UTM using any local IP address connected to UTM eth0 interface. The IP address I used is connected to eth1 internal network, thus doesn't work. This seems a bug to me as netstat -tapen shows

tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      0          1198052    25124/sshd

and internal network is authorized to connect ssh port.

Any remarks ?

-- 

Daniel

What does the tcpdump -i any port 22 show when you try to connect to eth1 via SSH?

Tim

What does the tcpdump -i any port 22 show when you try to connect to eth1 via SSH?

Tim

It shows the traffic generated by the connection, connection still refused, no logs in sshd.log If I connect to an IP address connected to eth0 I see the message "Accepted publickey for user loginuser from <IP address and port> ssh2: RSA

Both tests done from the host. Unbelievable !

-- 

Daniel

Could you copy/paste the results of the capture? 

Additionally, try the following:

- execute the following command in console

conntrack -E | grep "dport=22 mark"

- establish SSH session

- copy / paste the results of this as well

Tim

Tim, I found the culpit: a NAT rule was existing redirecting port 22 to a host ! Rule had outside uplinks as destination, why internal one of UTM was included? Mystery.

Anyway, case can be closed, big thanks for your support and help.

Daniel

Excellent, glad to see you're all squared away.  You're welcome, best of luck Daniel :)

Tim