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ssh -v server1

ssh -v server2

OpenSSH_7.4p1, LibreSSL 2.5.0

debug1: Reading configuration data /Users/userz/.ssh/config

debug1: /Users/userz/.ssh/config line 51: Applying options for server1

debug1: /Users/userz/.ssh/config line 43: Applying options for server2

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: Connecting to XXX.XXX.XX.XX [XXX.XXX.XX.XX] port 22.

debug1: Connecting to YY.YYY.YYY.YYY [YY.YYY.YYY.YYY] port 22.

debug1: Connection established.

debug1: identity file /Users/userz/.ssh/google_compute_engine type 1

debug1: key_load_public: No such file or directory

debug1: identity file /Users/userz/.ssh/google_compute_engine-cert type -1

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_7.4

debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.2

debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4

debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.2 pat OpenSSH* compat 0x04000000

debug1: match: OpenSSH_7.4 pat OpenSSH* compat 0x04000000

debug1: Authenticating to XXX.XXX.XX.XX:22 as 'userz'

debug1: Authenticating to YY.YYY.YYY.YYY:22 as 'userz'

debug1: using hostkeyalias: compute.hostkeyaliasX

debug1: using hostkeyalias: compute.hostkeyaliasY

debug1: SSH2_MSG_KEXINIT sent

debug1: SSH2_MSG_KEXINIT received

debug1: kex: algorithm: curve25519-sha256@libssh.org

debug1: kex: algorithm: curve25519-sha256

debug1: kex: host key algorithm: ecdsa-sha2-nistp256

debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none

debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none

debug1: expecting SSH2_MSG_KEX_ECDH_REPLY

debug1: Server host key: ecdsa-sha2-nistp256 SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

debug1: Server host key: ecdsa-sha2-nistp256 SHA256:yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

debug1: using hostkeyalias: compute.hostkeyaliasX

debug1: using hostkeyalias: compute.hostkeyaliasY

debug1: Host 'compute.hostkeyaliasX' is known and matches the ECDSA host key.

debug1: Host 'compute.hostkeyaliasY' is known and matches the ECDSA host key.

debug1: Found key in /Users/userz/.ssh/google_compute_known_hosts:1

debug1: Found key in /Users/userz/.ssh/google_compute_known_hosts:3

debug1: rekey after 134217728 blocks

debug1: SSH2_MSG_NEWKEYS sent

debug1: expecting SSH2_MSG_NEWKEYS

debug1: SSH2_MSG_NEWKEYS received

debug1: rekey after 134217728 blocks

debug1: SSH2_MSG_EXT_INFO received

debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>

debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521>

debug1: SSH2_MSG_SERVICE_ACCEPT received

debug1: Authentications that can continue: publickey

debug1: Authentications that can continue: publickey,password,keyboard-interactive

debug1: Next authentication method: publickey

debug1: Offering RSA public key: /Users/userz/.ssh/google_compute_engine

debug1: Server accepts key: pkalg rsa-sha2-512 blen 279

debug1: Authentications that can continue: publickey,password,keyboard-interactive

Enter passphrase for key '/Users/userz/.ssh/google_compute_engine':

debug1: Next authentication method: keyboard-interactive

Password:

Saved diffs

Original text

Open file

ssh -v server1
OpenSSH_7.4p1, LibreSSL 2.5.0
debug1: Reading configuration data /Users/userz/.ssh/config
debug1: /Users/userz/.ssh/config line 51: Applying options for server1
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to XXX.XXX.XX.XX [XXX.XXX.XX.XX] port 22.
debug1: Connection established.
debug1: identity file /Users/userz/.ssh/google_compute_engine type 1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/userz/.ssh/google_compute_engine-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.4
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.2
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.2 pat OpenSSH* compat 0x04000000
debug1: Authenticating to XXX.XXX.XX.XX:22 as 'userz'
debug1: using hostkeyalias: compute.hostkeyaliasX
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256@libssh.org
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
debug1: using hostkeyalias: compute.hostkeyaliasX
debug1: Host 'compute.hostkeyaliasX' is known and matches the ECDSA host key.
debug1: Found key in /Users/userz/.ssh/google_compute_known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /Users/userz/.ssh/google_compute_engine
debug1: Server accepts key: pkalg rsa-sha2-512 blen 279
Enter passphrase for key '/Users/userz/.ssh/google_compute_engine':

Changed text

Open file

ssh -v server2
OpenSSH_7.4p1, LibreSSL 2.5.0
debug1: Reading configuration data /Users/userz/.ssh/config
debug1: /Users/userz/.ssh/config line 43: Applying options for server2
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to YY.YYY.YYY.YYY [YY.YYY.YYY.YYY] port 22.
debug1: Connection established.
debug1: identity file /Users/userz/.ssh/google_compute_engine type 1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/userz/.ssh/google_compute_engine-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.4
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4
debug1: match: OpenSSH_7.4 pat OpenSSH* compat 0x04000000
debug1: Authenticating to YY.YYY.YYY.YYY:22 as 'userz'
debug1: using hostkeyalias: compute.hostkeyaliasY
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
debug1: using hostkeyalias: compute.hostkeyaliasY
debug1: Host 'compute.hostkeyaliasY' is known and matches the ECDSA host key.
debug1: Found key in /Users/userz/.ssh/google_compute_known_hosts:3
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /Users/userz/.ssh/google_compute_engine
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: keyboard-interactive
Password: