SSH error - Permission denied (publickey). if you create a connection without a user. How to do it right?

Question

linux

Hello everyone,
I want to connect to the server using the key, I already have the key and it works if I write "ssh -i ukey [email protected]".
BUT if I write "ssh -i ukey 10.0.0.13" then I get the error "Permission denied (publickey)."
In Linux, in principle, there is no problem writing with the user, but when I use putty from under Windows, it first connects and only then writes the name.
Actually, I need to work with putty, someone came across, can you suggest something?

Answer 1

In putty write [email protected] in the hostname and it will connect to the user

Answer 2

Vladimir I probyval, it does not help. As I wrote above, putty seems to first connect to the server, and then write the name. It just usually happens quickly and the user does not notice it.
Maybe a log will help.

[email protected]:~$ ssh -i ukey 10.0.0.13 -vvv
OpenSSH_7.2p2 Ubuntu-4ubuntu2.2, OpenSSL 1.0.2g 1 Mar 2016
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: resolving "10.0.0.13" port 22
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to 10.0.0.13 [10.0.0.13] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file ukey type -1
debug1: key_load_public: No such file or directory
debug1: identity file ukey-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH -2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.2
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
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to 10.0.0.13:22 as 'adm1'
debug3: hostkeys_foreach: reading file "/home/adm1/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /home/adm1/.ssh/known_hosts:2
debug3: load_hostkeys: loaded 1 keys from 10.0.0.13
debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],[email protected],[email protected] com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2- nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: ecdsa-sha2-nistp256-cert-v01 @openssh.com,[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 ,[email protected],[email protected],ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256 -cbc,3des-
cbc debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc ,aes192-cbc,aes256-cbc,3des-
cbc debug2: MACs ctos: [email protected],[email protected],[email protected],hmac [email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac -sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],hmac [email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected] .com,zlib
debug2: compression stoc: none,[email protected],zlib
debug2: languages ​​ctos:
debug2: languages ​​stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256 @libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1
debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
debug2: ciphers ctos: [email protected],aes128-ctr,aes192- ctr,aes256-ctr,[email protected],[email protected]
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected] openssh.com,[email protected]
debug2: MACs ctos: [email protected],[email protected],[email protected],hmac- [email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac- sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],hmac [email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected] .com
debug2: compression stoc: none,[email protected]
debug2: languages ​​ctos:
debug2: languages ​​stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: [email protected]
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [email protected] MAC: compression: none
debug1: kex: client->server cipher: [email protected] MAC: compression : none
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:OZyug3GHOzPctio8LZ1efN746GO9ZNvowq3if2aVwOM
debug3: hostkeys_foreach: reading file "/home/
bugsh_adm1 : record_hostkey: found key type ECDSA in file /home/adm1/.ssh/known_hosts:2
debug3: load_hostkeys: loaded 1 keys from 10.0.0.13
debug1: Host '10.0.0.13' is known and matches the ECDSA host key.
debug1: Found key in /home/adm1/.ssh/known_hosts:2
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug2: set_newkeys: mode 0
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug2: key: ukey ((nil)), explicit
debug3: send packet: type 5
debug3: receive packet : type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1 : Authentications that can continue: publickey
debug3: start over, passed a different list publickey
debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key : ukey
debug3: sign_and_send_pubkey: RSA SHA256:vJfpcOigrr4UtutZ7Aj2x7GlvWEq813pR9mTDD9BYrM
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
Permission denied (public key).