I am getting this error and I don't know what the problem is.
SSH Disconnect Error: no more authentication methods available.
We are using Serv-U on the back-end and FTP Voyager on the front end.
Regular password based connections work fine.
As soon as I create a private / public key and bind it to the user (on both sides), then the authentication will not work.
Here is the log.
Perhaps I have to disable password authentication before public key authenication will work?
STATUS> Resolving host "abc.myspecialsite.com"...
STATUS> Connecting to "65.212.176.194" on port 22.
STATUS> Connected to 65.212.176.194:22 from 10.0.0.25:58052.
STATUS> Negotiating SSH2 session with server...
STATUS> Client Identification: SSH-2.0-FTP Voyager_16.2.0.328
STATUS> Server Identification: SSH-2.0-2.0
STATUS> Initializing key exchange process...
STATUS> Selected key exchange algorithm: diffie-hellman-group1-sha1
STATUS> Host Key Fingerprint: E4:DD:11:2E:82:34:AB:62:59:1C:C8:62:1D:4B:48:99
STATUS> Server --> Client: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Client --> Server: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Selected public key protocol: ssh-rsa
STATUS> Key exchange process successfully completed.
COMMAND> SSH_MSG_SERVICE_REQUEST: service: ssh-userauth
SSH_MSG_SERVICE_ACCEPT: service accepted
STATUS> Querying server for supported authentication methods
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: none
SSH_MSG_USERAUTH_FAILURE: partial: 0; available authentications: password, publickey
STATUS> Supported authentication methods: password, publickey
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_PK_OK: public key algorithm accepted
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_FAILURE: partial: 1; available authentications: password, publickey
ERROR> SSH Disconnect Error: no more authentication methods available.
ERROR> Unable to login.
ERROR> Connection attempt failed. Retrying in 3 seconds...
COMMAND> SSH_MSG_DISCONNECT: reason code 14; description: SSH Disconnect Error: no more authentication methods available.
ERROR> The server has unexpectedly closed the connection.
ERROR> Connection attempt failed. Retrying in 3 seconds...
STATUS> Retrying Connection (attempt 2)...
STATUS> Resolving host "abc.myspecialsite.com"...
STATUS> Connecting to "65.212.176.194" on port 22.
STATUS> Connected to 65.212.176.194:22 from 10.0.0.25:58054.
STATUS> Negotiating SSH2 session with server...
STATUS> Client Identification: SSH-2.0-FTP Voyager_16.2.0.328
STATUS> Server Identification: SSH-2.0-2.0
STATUS> Initializing key exchange process...
STATUS> Selected key exchange algorithm: diffie-hellman-group1-sha1
STATUS> Host Key Fingerprint: E4:DD:11:2E:82:34:AB:62:59:1C:C8:62:1D:4B:48:99
STATUS> Server --> Client: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Client --> Server: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Selected public key protocol: ssh-rsa
STATUS> Key exchange process successfully completed.
COMMAND> SSH_MSG_SERVICE_REQUEST: service: ssh-userauth
SSH_MSG_SERVICE_ACCEPT: service accepted
STATUS> Querying server for supported authentication methods
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: none
SSH_MSG_USERAUTH_FAILURE: partial: 0; available authentications: password, publickey
STATUS> Supported authentication methods: password, publickey
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_PK_OK: public key algorithm accepted
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_FAILURE: partial: 1; available authentications: password, publickey
ERROR> SSH Disconnect Error: no more authentication methods available.
ERROR> Unable to login.
ERROR> Connection attempt failed. Retrying in 3 seconds...
COMMAND> SSH_MSG_DISCONNECT: reason code 14; description: SSH Disconnect Error: no more authentication methods available.
ERROR> The server has unexpectedly closed the connection.
ERROR> Connection attempt failed. Retrying in 3 seconds...
STATUS> Retrying Connection (attempt 3)...
STATUS> Resolving host "abc.myspecialsite.com"...
STATUS> Connecting to "65.212.176.194" on port 22.
STATUS> Connected to 65.212.176.194:22 from 10.0.0.25:58056.
STATUS> Negotiating SSH2 session with server...
STATUS> Client Identification: SSH-2.0-FTP Voyager_16.2.0.328
STATUS> Server Identification: SSH-2.0-2.0
STATUS> Initializing key exchange process...
STATUS> Selected key exchange algorithm: diffie-hellman-group1-sha1
STATUS> Host Key Fingerprint: E4:DD:11:2E:82:34:AB:62:59:1C:C8:62:1D:4B:48:99
STATUS> Server --> Client: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Client --> Server: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Selected public key protocol: ssh-rsa
STATUS> Key exchange process successfully completed.
COMMAND> SSH_MSG_SERVICE_REQUEST: service: ssh-userauth
SSH_MSG_SERVICE_ACCEPT: service accepted
STATUS> Querying server for supported authentication methods
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: none
SSH_MSG_USERAUTH_FAILURE: partial: 0; available authentications: password, publickey
STATUS> Supported authentication methods: password, publickey
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_PK_OK: public key algorithm accepted
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_FAILURE: partial: 1; available authentications: password, publickey
ERROR> SSH Disconnect Error: no more authentication methods available.
ERROR> Unable to login.
ERROR> Connection attempt failed. Retrying in 3 seconds...
COMMAND> SSH_MSG_DISCONNECT: reason code 14; description: SSH Disconnect Error: no more authentication methods available.
ERROR> The server has unexpectedly closed the connection.
ERROR> Connection attempt failed. Retrying in 3 seconds...
STATUS> Retrying Connection (attempt 4)...
STATUS> Resolving host "abc.myspecialsite.com"...
STATUS> Connecting to "65.212.176.194" on port 22.
STATUS> Connected to 65.212.176.194:22 from 10.0.0.25:58058.
STATUS> Negotiating SSH2 session with server...
STATUS> Client Identification: SSH-2.0-FTP Voyager_16.2.0.328
STATUS> Server Identification: SSH-2.0-2.0
STATUS> Initializing key exchange process...
STATUS> Selected key exchange algorithm: diffie-hellman-group1-sha1
STATUS> Host Key Fingerprint: E4:DD:11:2E:82:34:AB:62:59:1C:C8:62:1D:4B:48:99
STATUS> Server --> Client: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Client --> Server: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Selected public key protocol: ssh-rsa
STATUS> Key exchange process successfully completed.
COMMAND> SSH_MSG_SERVICE_REQUEST: service: ssh-userauth
SSH_MSG_SERVICE_ACCEPT: service accepted
STATUS> Querying server for supported authentication methods
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: none
SSH_MSG_USERAUTH_FAILURE: partial: 0; available authentications: password, publickey
STATUS> Supported authentication methods: password, publickey
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_PK_OK: public key algorithm accepted
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_FAILURE: partial: 1; available authentications: password, publickey
ERROR> SSH Disconnect Error: no more authentication methods available.
ERROR> Unable to login.
ERROR> Connection attempt failed. Retrying in 3 seconds...
COMMAND> SSH_MSG_DISCONNECT: reason code 14; description: SSH Disconnect Error: no more authentication methods available.
ERROR> The server has unexpectedly closed the connection.
ERROR> Connection attempt failed. Retrying in 3 seconds...
STATUS> Retrying Connection (attempt 5)...
STATUS> Resolving host "abc.myspecialsite.com"...
STATUS> Connecting to "65.212.176.194" on port 22.
STATUS> Connected to 65.212.176.194:22 from 10.0.0.25:58060.
STATUS> Negotiating SSH2 session with server...
STATUS> Client Identification: SSH-2.0-FTP Voyager_16.2.0.328
STATUS> Server Identification: SSH-2.0-2.0
STATUS> Initializing key exchange process...
STATUS> Selected key exchange algorithm: diffie-hellman-group1-sha1
STATUS> Host Key Fingerprint: E4:DD:11:2E:82:34:AB:62:59:1C:C8:62:1D:4B:48:99
STATUS> Server --> Client: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Client --> Server: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Selected public key protocol: ssh-rsa
STATUS> Key exchange process successfully completed.
COMMAND> SSH_MSG_SERVICE_REQUEST: service: ssh-userauth
SSH_MSG_SERVICE_ACCEPT: service accepted
STATUS> Querying server for supported authentication methods
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: none
SSH_MSG_USERAUTH_FAILURE: partial: 0; available authentications: password, publickey
STATUS> Supported authentication methods: password, publickey
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_PK_OK: public key algorithm accepted
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_FAILURE: partial: 1; available authentications: password, publickey
ERROR> SSH Disconnect Error: no more authentication methods available.
ERROR> Unable to login.
ERROR> Connection attempt failed. Retrying in 3 seconds...
COMMAND> SSH_MSG_DISCONNECT: reason code 14; description: SSH Disconnect Error: no more authentication methods available.
ERROR> The server has unexpectedly closed the connection.
ERROR> Connection attempt failed. Retrying in 3 seconds...
STATUS> Retrying Connection (attempt 6)...
STATUS> Resolving host "abc.myspecialsite.com"...
STATUS> Connecting to "65.212.176.194" on port 22.
STATUS> Connected to 65.212.176.194:22 from 10.0.0.25:58061.
STATUS> Negotiating SSH2 session with server...
STATUS> Client Identification: SSH-2.0-FTP Voyager_16.2.0.328
STATUS> Server Identification: SSH-2.0-2.0
STATUS> Initializing key exchange process...
STATUS> Selected key exchange algorithm: diffie-hellman-group1-sha1
STATUS> Host Key Fingerprint: E4:DD:11:2E:82:34:AB:62:59:1C:C8:62:1D:4B:48:99
STATUS> Server --> Client: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Client --> Server: Encryption: aes128-cbc, MAC: hmac-sha1, Compression: zlib
STATUS> Selected public key protocol: ssh-rsa
STATUS> Key exchange process successfully completed.
COMMAND> SSH_MSG_SERVICE_REQUEST: service: ssh-userauth
SSH_MSG_SERVICE_ACCEPT: service accepted
STATUS> Querying server for supported authentication methods
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: none
SSH_MSG_USERAUTH_FAILURE: partial: 0; available authentications: password, publickey
STATUS> Supported authentication methods: password, publickey
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_PK_OK: public key algorithm accepted
COMMAND> SSH_MSG_USERAUTH_REQUEST: user: abc.myspecialsite.com|bear-user; service: ssh-connection; type: publickey
SSH_MSG_USERAUTH_FAILURE: partial: 1; available authentications: password, publickey
ERROR> SSH Disconnect Error: no more authentication methods available.
ERROR> Unable to login.
ERROR> Connection attempt failed. Retrying in 3 seconds...
COMMAND> SSH_MSG_DISCONNECT: reason code 14; description: SSH Disconnect Error: no more authentication methods available.
ERROR> The server has unexpectedly closed the connection.
ERROR> Connection attempt failed. Retrying in 3 seconds...
STATUS> Retrying Connection (attempt 7)...
STATUS> Resolving host "abc.myspecialsite.com"...
STATUS> Connecting to "65.212.176.194" on port 22.
STATUS> Connected to 65.212.176.194:22 from 10.0.0.25:58064.
STATUS> Negotiating SSH2 session with server...
STATUS> Client Identification: SSH-2.0-FTP Voyager_16.2.0.328
ERROR> The server has unexpectedly closed the connection.
ERROR> Could not establish a connection to MFT-AIM.