我们有一台只能通过安全密钥（而不是通过密码）ssh进行访问的服务器。管理员添加我的公共密钥后，我仍然无法登录，并且始终显示“权限被拒绝（publickey，gssapi-keyex，gssapi-with-mic）”。管理员说他在ssh日志文件中找不到我的尝试，并询问我是否真的到达服务器。
我使用类似ssh -p port username @ IPaddress的名称。当我故意更改端口或IP地址中的一两位数字时，我得到的是“操作超时”，而不是上面的“权限被拒绝...”。所以我想我真的到达了服务器？但是，当我ping IP地址时，它始终是“请求icmp_seq超时”。
这里可能是什么问题？谢谢。
ssh -vvv调试信息是
OpenSSH_7.9p1, LibreSSL 2.7.3
debug1: Reading configuration data /Users/myname/.ssh/config
debug1: /Users/myname/.ssh/config line 1: Applying options for *
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 48: Applying options for *
debug1: /etc/ssh/ssh_config line 52: Applying options for *
debug2: resolve_canonicalize: hostname IPaddress is address
debug2: ssh_connect_direct
debug1: Connecting to IPaddress [IPaddress] port 51357.
debug1: Connection established.
debug1: identity file /Users/myname/.ssh/id_rsa type 0
debug1: identity file /Users/myname/.ssh/id_rsa-cert type -1
debug1: identity file /Users/myname/.ssh/id_dsa type -1
debug1: identity file /Users/myname/.ssh/id_dsa-cert type -1
debug1: identity file /Users/myname/.ssh/id_ecdsa type -1
debug1: identity file /Users/myname/.ssh/id_ecdsa-cert type -1
debug1: identity file /Users/myname/.ssh/id_ed25519 type -1
debug1: identity file /Users/myname/.ssh/id_ed25519-cert type -1
debug1: identity file /Users/myname/.ssh/id_xmss type -1
debug1: identity file /Users/myname/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.9
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH_5* compat 0x0c000002
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to IPaddress:51357 as 'username'
debug3: put_host_port: [IPaddress]:51357
debug3: hostkeys_foreach: reading file "/Users/myname/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file /Users/myname/.ssh/known_hosts:4
debug3: load_hostkeys: loaded 1 keys from [IPaddress]:51357
debug3: order_hostkeyalgs: prefer hostkeyalgs: rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa
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: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa,ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519
debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,zlib@openssh.com,zlib
debug2: compression stoc: none,zlib@openssh.com,zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: host key algorithms: ssh-rsa,ssh-dss
debug2: ciphers ctos: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: ciphers stoc: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: MACs ctos: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: MACs stoc: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: compression ctos: none,zlib@openssh.com
debug2: compression stoc: none,zlib@openssh.com
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: diffie-hellman-group-exchange-sha256
debug1: kex: host key algorithm: ssh-rsa
debug1: kex: server->client cipher: aes128-ctr MAC: umac-64@openssh.com compression: none
debug1: kex: client->server cipher: aes128-ctr MAC: umac-64@openssh.com compression: none
debug3: send packet: type 34
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(2048<3072<8192) sent
debug3: receive packet: type 31
debug1: got SSH2_MSG_KEX_DH_GEX_GROUP
debug2: bits set: 1511/3072
debug3: send packet: type 32
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug3: receive packet: type 33
debug1: got SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Server host key: ssh-rsa SHA256:7UKMMkAtOx9iGnviIM7DQZt2L/Wfj7aWkm2KzUKwyhQ
debug3: put_host_port: [IPaddress]:51357
debug3: put_host_port: [IPaddress]:51357
debug3: hostkeys_foreach: reading file "/Users/myname/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file /Users/myname/.ssh/known_hosts:4
debug3: load_hostkeys: loaded 1 keys from [IPaddress]:51357
debug3: hostkeys_foreach: reading file "/Users/myname/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file /Users/myname/.ssh/known_hosts:4
debug3: load_hostkeys: loaded 1 keys from [IPaddress]:51357
debug1: Host '[IPaddress]:51357' is known and matches the RSA host key.
debug1: Found key in /Users/myname/.ssh/known_hosts:4
debug2: bits set: 1526/3072
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey after 4294967296 blocks
debug1: Will attempt key: /Users/myname/.ssh/id_rsa RSA SHA256:eN+soSSk1BYuhMVgWeEVyakYyoCPrFuUf23jKsc1RDs
debug1: Will attempt key: /Users/myname/.ssh/id_dsa
debug1: Will attempt key: /Users/myname/.ssh/id_ecdsa
debug1: Will attempt key: /Users/myname/.ssh/id_ed25519
debug1: Will attempt key: /Users/myname/.ssh/id_xmss
debug2: pubkey_prepare: done
debug3: send packet: type 5
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,gssapi-keyex,gssapi-with-mic
debug3: start over, passed a different list publickey,gssapi-keyex,gssapi-with-mic
debug3: preferred 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: Offering public key: /Users/myname/.ssh/id_rsa RSA SHA256:eN+soSSk1BYuhMVgWeEVyakYyoCPrFuUf23jKsc1RDs
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,gssapi-keyex,gssapi-with-mic
debug1: Trying private key: /Users/myname/.ssh/id_dsa
debug3: no such identity: /Users/myname/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /Users/myname/.ssh/id_ecdsa
debug3: no such identity: /Users/myname/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /Users/myname/.ssh/id_ed25519
debug3: no such identity: /Users/myname/.ssh/id_ed25519: No such file or directory
debug1: Trying private key: /Users/myname/.ssh/id_xmss
debug3: no such identity: /Users/myname/.ssh/id_xmss: No such file or directory
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
username@IPaddress: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
答案 0 :(得分：0)
问题很可能是您的公用密钥不在服务器上的/home/username/.ssh/authorized_keys文件中。 username部分应与您在命令行上传递的内容完全匹配。