Nexus 93108TC-EX - %DAEMON-3-SYSTEM_MSG: Error

[Quintin.Mayo]

Hi,

We upgraded our Nexus-93108TC-EX devices to software version 10.2.4.M and now we are receiving the below warning message.  I believe this is a bug , how can we resolve this issue? Any assistance would be greatly appreciated.

2023 Apr 18 14:10:58 XXXX-Nexus-93108TC-EX-002 %DAEMON-3-SYSTEM_MSG: error: protocol identification string lack carriage return - dcos_sshd[14421]
2023 Apr 18 14:12:18 XXXX-Nexus-93108TC-EX-002 %DAEMON-3-SYSTEM_MSG: error: kex_exchange_identification: Connection closed by remote host - dcos_sshd[15236]
2023 Apr 18 14:13:25 XXXX-Nexus-93108TC-EX-002 %DAEMON-3-SYSTEM_MSG: error: protocol identification string lack carriage return - dcos_sshd[15933]

Thanks,

[MHM Cisco World]

Cisco Bug: CSCvv24160 - %DAEMON-3-SYSTEM_MSG: error:protocol identification string lack carriage retur

[KGN]

I'm getting this error when I'm trying to ssh another switch connected to nexus. So my proble is not only with error message, but failed ssh connection

[marce1000]

       - FYI : https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwc88923

 M.

[kenmunford]

I have noticed that this error appears when the nexus switch (C93180YC-EX) been scanned by a Nessus security appliance.  Here are some notable lines from the log:    (x.x.x.x being the IP address of my Nessus box)

%AUTHPRIV-3-SYSTEM_MSG: pam_aaa:Authentication failed from x.x.x.x - dcos_sshd[8859]
%DAEMON-3-SYSTEM_MSG: error: kex_exchange_identification: banner line contains invalid characters - dcos_sshd[8964]
%DAEMON-3-SYSTEM_MSG: error: kex_exchange_identification: banner line contains invalid characters - dcos_sshd[8971]
%DAEMON-3-SYSTEM_MSG: error: protocol identification string lack carriage return - dcos_sshd[9461]
%DAEMON-3-SYSTEM_MSG: error: PAM: Authentication failure for illegal user ${jndi from x.x.x.x - dcos_sshd[9508]
%DAEMON-3-SYSTEM_MSG: error: Protocol major versions differ: 2 vs. 9 - dcos_sshd[9599]

[costaspal]

FYI ~> have the same issue with N9K-C93360YC-FX2 running version 10.4(2) Bios:version 05.51...

[quadir04]

Hello , 

I'm getting below alarm can anyone help on this i've just pasted the sh ver of the switch.

SYSLOG: %DAEMON-3-SYSTEM_MSG: error: PAM: Authentication failure for illegal user $jndi from x.x.x.x - dcos_sshd5434

Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Documents: http://www.cisco.com/en/US/products/ps9372/tsd_products_support_serie
s_home.html
Copyright (c) 2002-2018, Cisco Systems, Inc. All rights reserved.
The copyrights to certain works contained herein are owned by
other third parties and are used and distributed under license.
Some parts of this software are covered under the GNU Public
License. A copy of the license is available at
http://www.gnu.org/licenses/gpl.html.

Software
BIOS: version 2.1.17
loader: version N/A
kickstart: version 8.3(2)
system: version 8.3(2)
BIOS compile time: 01/08/14
kickstart image file is: bootflash:///m9100-s5ek9-kickstart-mz.8.3.2.bin
kickstart compile time: 11/30/2018 12:00:00 [12/15/2018 00:31:20]
system image file is: bootflash:///m9100-s5ek9-mz.8.3.2.bin
system compile time: 11/30/2018 12:00:00 [12/15/2018 02:02:43]

Hardware
cisco MDS 9148S 16G 48 FC (1 Slot) Chassis ("2/4/8/16 Gbps FC/Supervisor")
Motorola, e500v2 with 4088552 kB of memory.
Processor Board ID JAE22020DH6

bootflash: 4018896 kB

Kernel uptime is 1769 day(s), 14 hour(s), 0 minute(s), 54 second(s)

Last reset at 35407 usecs after Wed Jun 12 20:34:07 2019
Reason: Reset due to upgrade
System version: 8.1(1)
Service:

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