Strange behaviour from the RouterOS SSH server

RouterOS General
1

Recently I discovered that I have the following strange behaviour on one of mine RB951 routers. When I tried to connect via SSH, I’ve got the following output:
Trying XXX.XXX.XX.X…
Connected to XXX.XXX.XX.X.
Escape character is ‘^]’.
SSH-2.0-ROSSSH
Connection closed by foreign host.

Welcome back!

Connecting via SSL works just fine. The issue was there in version 6.35.2, I upgraded to 6.35.4 and the situation is still the same. Has anyone experienced this? How can I restore the previous behaviour of the SSH server in Router OS?


Regards,
Boyan

2

Connecting from what kind of OS ?

3

I connect from RouterOS version 6.35.2

4

Normis,
I’ve just checked it from my Linux machine…
bsotirov@NUC-desktop:~$ uname -r
3.13.0-88-generic

It woks fine. So it’s definitely dependent on the source where the SSH is initiated from…

5

What command did you run exactly?

This output is from the telnet client, not from the ssh client.
Trying to connect to SSH using telnet won’t work obviously!

[cha0s@rtr-awmn-core.cha0s.awmn] > /system telnet 10.26.36.26
Trying 10.26.36.26...
Connected to 10.26.36.26.
Escape character is '^]'.
SSH-2.0-ROSSSH
Connection closed by foreign host.

Welcome back!

While using the proper command it asks for a password:

[cha0s@rtr-awmn-core.cha0s.awmn] > /system ssh address=10.26.36.26
password:
6

Cha0s that’s a spot on!
I mistakenly used telnet (which is disabled on the device) but I’ve put the correct port that is used for the SSH service. So normally this is what I get, that the port is opened.
So that’s it, problem solved. Thank you so much!

7

Is there a way to mark this thread as closed? The interface has changed recently…

8

There is no special button, but you can edit the original post tile with adding [SOLVED] to it