problem with openSSH

English Network/Internet
#1

Ever since I installed Leap 42.3 on two LAN connected PCs,
I am not able to log into the other computer:

ssh 192.168.0.8
ssh: connect to host 192.168.0.8 port 22: Connection refused

I have no problem to log into other machines that run older versions of
openSUSE.

openSSH is installed on both computers, port 22 is open, and the
firewall has been temporarily disabled. Login name and password are
identical on both server and client.

in my struggle to get this working I have created new keys by means
of ssh_keygen.

On the client the ~/.ssh/id_rsa

-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: AES-128-CBC,664AA73DE28CB9A38B4DF04AEE033D3D
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XkiKLIK3fokVhJvuD0uY2z0hvn+y0OnrGSxTOnqZCoVBpWHRiWHSP4oRAsDCgcnC
GVhvR8WWRASfFR73MgIAKxLqRQcMtYFPMK/jAWiUu+Zl6duYX8Hv/RtEK9nV6boj
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Z91u3WPNRvbLhh29ibYiI0+2IYsaVvd/Sl+P007K9Z9Wu/EB0Vh5VXBvMgCf0QpP
w9ikhCKPBikppuvow9miyzIRSZAl4N4S1NVpje38U8i3NFZg45oNQ3S5MkUZ3qZA
UhcqQ+0gnEZsu8lUQpJ7kbR6rXNOAUlxTPSZBXdIB6iN3rJN2kgIGqxy60S3mH5s
33EkrK5mT1BTeRqua4TwI6F0uQXhhLs45VrT1RoXoNO2f48xZXijjU2zuI3/Rwfe
c04aCPFW++B/ERBSflcxZeARwTlYASIwRkFb18p6lflWNFcyYyYFUXIMJk/CCrIJ
trlcuslfCIMqoNCdo9cAkLylB7+ry3n5/7yfZjgYkBdtChxasaMu52Ljpm96hCEb
hTM4PT5ifH9SlsuX/W5O3Mfzyo57JMWaFwcCEMWH5Kv90bO0Chq2iaQgVHqI37lj
JJk/F3W2bPAmi9sIHLOaY2epD0cwKkFlNgDkMM4CIPyZKNli3QeE0SztD/1iUnFT
-----END RSA PRIVATE KEY-----

on the server ~/.ssh/authorized_keys
the pubic key is as follows:

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDTSMPn7EO5oCeYp4YSd+OVQV6m1vtQvowXuaA6UFuqqNlTSaCRNxLm0T79VHHBTpeGbFdvIr6/9o5WLbVvLDvepyHawTxhImEuK31Ir1l1yijTZWkN7cX5kQ7jv+191cQ95M374AnNsxTCQzpLwv5FXb6If3t21Vw1XM/PbTaVc8bdSypVDKx16X5UvqUcm29PRHUWvkRVO1G0xH4YO7aq5K6QeNucDODtbFC59XFfltziVWjLcV1BJCnDjmzBELH0pkoel7hRp321rTstJZ2zahic0g4Ffq9DJfQ05WVCtlWgUVf8KdgTll4JxVzfrvKyNzzgCQBAAe3DVFqkbsVf egbert@egbert

There seems to be something different on Leap 42.3 than on older
versions, but I don’t know what.

I hope someone can help me with this prblem.
Thanks for helping.

#2

The computer (ssh) says: “Connection refused”.
You say: “it is listening on port 22”. I think you must prove that that is the case. E .g. by

netstat -tulpn | grep :22

(the idea behind it being that we do not trust what people say, but what computers show ;)).

And please in the future use CODE tags around copied/pasted computer text in a post. It is the # button in the tool bar of the post editor. When applicable copy/paste complete, that is including the prompt, the command, the output and the next prompt.

#3

Hello Henk
Thanks for your timely answer.
I didn’t mean to say “port 22 is open”, but rather I wanted to indicate that I
opened (tried to open) port 22 through the YAST/Firewall settings.

But the computer said this:

egbert:/home/egbert # netstat -tulpn | grep :22
egbert:/home/egbert #

i.e. nothing. Port is obviously not open.
Now, what can I do to create and open it?
Hope you can help me with that also.

I have the same problem with port 3306 to connect to mySQL database.
Hoping that this will also be solved in the same manner.
Egbert.

#4

So sshd is not running on the server?

systemctl status sshd
#5

As @deano_ferrari concludes, there is no program listening on port 22. If it is open or not (on the firewall) is of no importance as long as nothing is listening.

So, like he suggests, check if sshd is running.

#6

Thanks for all your help. ssh is working now.
There are still 2 problems with Leap 42.3, but I will open new threads for them, as they are different.

Regards from Manila
Egbert

#7

Thanks for the update.