%SSH-4-SSH2_UNEXPECTED_MSG: error

[Lost & Found]

Hi,

Based on the following logs what does it mean?

*Aug 26 04:47:27.874: %SSH-4-SSH2_UNEXPECTED_MSG: Unexpected message type has arrived. Terminating the connection from 85.105.19.171
*Aug 26 06:11:50.077: %SSH-4-SSH2_UNEXPECTED_MSG: Unexpected message type has arrived. Terminating the connection from 182.100.67.113
*Aug 26 07:32:50.037: %SSH-4-SSH2_UNEXPECTED_MSG: Unexpected message type has arrived. Terminating the connection from 222.186.21.218
*Aug 26 10:35:49.212: %SSH-4-SSH2_UNEXPECTED_MSG: Unexpected message type has arrived. Terminating the connection from 222.186.56.175
*Aug 26 13:19:24.168: %SSH-4-SSH2_UNEXPECTED_MSG: Unexpected message type has arrived. Terminating the connection from 222.186.21.236
*Aug 27 00:53:38.461: %SSH-4-SSH2_UNEXPECTED_MSG: Unexpected message type has arrived. Terminating the connection from 43.229.53.26
*Aug 27 11:36:22.258: %SSH-4-SSH2_UNEXPECTED_MSG: Unexpected message type has arrived. Terminating the connection from 150.242.110.5
 

thanks

[InayathUlla Sharieff]

this message means that SSH connection was closed by remote end because it is not interested to continue, like in case with ssh-keyscan, or it doesn't want to continue, like in case with changed RSA keys.

HTH

[Lost & Found]

is this a sign of attack to our network?

thanks