ssh failure after upgrading to high sierra

Hello apple network users/experts

Since upgrading our laboratory MacBook Pro laptops OS to high Sierra almost all of our computers fail to connect to the remote servers using our laboratory intranet cable with the embedded errors :

I thought some of the experts here might be able to give some advice.

surprisingly it works fine with WIFI and older OS. No firewall/ blocking issue was identified.

We will deeply appreciate your helps.

Arsalans-MacBook-Pro:~ arsalan$ ssh -v ***

OpenSSH_7.6p1, LibreSSL 2.6.2

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: /etc/ssh/ssh_config line 48: Applying options for *

debug1: Connecting to *** port 22.

debug1: Connection established.

debug1: key_load_public: No such file or directory

debug1: identity file /Users/arsalan/.ssh/id_rsa type -1

debug1: key_load_public: No such file or directory

debug1: identity file /Users/arsalan/.ssh/id_rsa-cert type -1

debug1: key_load_public: No such file or directory

debug1: identity file /Users/arsalan/.ssh/id_dsa type -1

debug1: key_load_public: No such file or directory

debug1: identity file /Users/arsalan/.ssh/id_dsa-cert type -1

debug1: key_load_public: No such file or directory

debug1: identity file /Users/arsalan/.ssh/id_ecdsa type -1

debug1: key_load_public: No such file or directory

debug1: identity file /Users/arsalan/.ssh/id_ecdsa-cert type -1

debug1: key_load_public: No such file or directory

debug1: identity file /Users/arsalan/.ssh/id_ed25519 type -1

debug1: key_load_public: No such file or directory

debug1: identity file /Users/arsalan/.ssh/id_ed25519-cert type -1

debug1: Local version string SSH-2.0-OpenSSH_7.6

debug1: Remote protocol version 2.0, remote software version xxxxxxx

debug1: no match: xxxxxxx

debug1: Authenticating to foo :22 as 'foo'

debug1: SSH2_MSG_KEXINIT sent

Connection closed by *.*.*.* port 22

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