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SSH公開鍵がインストールされていても接続しない

2台のサーバーを接続しようとしています。サーバーAのユーザーjohnからid_dsa.pubキーを取得し、サーバーBのユーザーmikeのauthorized_keysに貼り付けました。

次に、マイクログインを使用してサーバーAからサーバーBに接続しようとしましたが、それでもパスワードを要求されます。

Mikeの.ssh /ディレクトリには、次のようなauthorized_keysファイルしかありません。

bash-3.00$ ls -l
total 16
-rw-------   1 mike users    2422 Oct  8 14:47 authorized_keys
bash-3.00$

サーバーBの管理者は、このファイルだけがあれば、Bサーバーに接続するのに十分であると確信しました。

私は何かが足りないのですか？

みんなありがとう！

編集：ここにログがあります：

johndbb3:/home/john/.ssh> ssh -vvv [email protected]
Sun_SSH_1.1, SSH protocols 1.5/2.0, OpenSSL 0x0090704f
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Rhosts Authentication disabled, originating port will not be trusted.
debug1: ssh_connect: needpriv 0
debug1: Connecting to fpnld1.uk.db.com [10.240.1.215] port 22.
debug1: Connection established.
debug1: identity file /home/john/.ssh/identity type -1
debug3: Not a RSA1 key file /home/john/.ssh/id_rsa.
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug3: key_read: no key found
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug2: key_type_from_name: unknown key type '-----END'
debug3: key_read: no key found
debug1: identity file /home/john/.ssh/id_rsa type 1
debug3: Not a RSA1 key file /home/john/.ssh/id_dsa.
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug3: key_read: no key found
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug2: key_type_from_name: unknown key type '-----END'
debug3: key_read: no key found
debug1: identity file /home/john/.ssh/id_dsa type 2
debug1: Remote protocol version 2.0, remote software version Sun_SSH_1.1.3
debug1: no match: Sun_SSH_1.1.3
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-Sun_SSH_1.1
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes128-cbc,arcfour,3des-cbc,blowfish-cbc
debug2: kex_parse_kexinit: aes128-ctr,aes128-cbc,arcfour,3des-cbc,blowfish-cbc
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: i-default
debug2: kex_parse_kexinit: i-default
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug1: Failed to acquire GSS-API credentials for any mechanisms (No credentials were supplied, or the credentials were unavailable or inaccessible
Unknown code 0
)
debug1: SSH2_MSG_KEXINIT sent
debug3: kex_reset_dispatch -- should we dispatch_set(KEXINIT) here? 0 && !0
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes128-cbc,arcfour,3des-cbc,blowfish-cbc
debug2: kex_parse_kexinit: aes128-ctr,aes128-cbc,arcfour,3des-cbc,blowfish-cbc
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: i-default
debug2: kex_parse_kexinit: i-default
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: kex_parse_kexinit: gss-group1-sha1-toWM5Slw5Ew8Mqkay+al2g==,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes128-cbc,arcfour,3des-cbc,blowfish-cbc,aes192-ctr,aes192-cbc,aes256-ctr,aes256-cbc
debug2: kex_parse_kexinit: aes128-ctr,aes128-cbc,arcfour,3des-cbc,blowfish-cbc,aes192-ctr,aes192-cbc,aes256-ctr,aes256-cbc
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: ar-EG,ar-SA,bg-BG,ca-ES,cs-CZ,da-DK,de,de-AT,de-CH,de-DE,de-LU,el-CY,el-GR,en-AU,en-CA,en-GB,en-IE,en-MT,en-NZ,en-US,es,es-AR,es-BO,es-CL,es-CO,es-CR,es-EC,es-ES,es-GT,es-MX,es-NI,es-PA,es-PE,es-PY,es-SV,es-UY,es-VE,et-EE,fi-FI,fr,fr-BE,fr-CA,fr-CH,fr-FR,fr-LU,he-IL,hr-HR,hu-HU,is-IS,it,it-IT,kk-KZ,lt-LT,lv-LV,mk-MK,mt-MT,nb-NO,nl-BE,nl-NL,nn-NO,pl,pl-PL,pt-BR,pt-PT,ro-RO,ru,ru-RU,sh-BA,sk-SK,sl-SI,sq-AL,sr-CS,sv,sv-SE,tr-TR,ar,ca,cz,da,el,et,fi,he,hu,lt,lv,nl,no,no-NO,no-NY,nr,pt,sr-SP,sr-YU,tr,i-default,uk-UA
debug2: kex_parse_kexinit: ar-EG,ar-SA,bg-BG,ca-ES,cs-CZ,da-DK,de,de-AT,de-CH,de-DE,de-LU,el-CY,el-GR,en-AU,en-CA,en-GB,en-IE,en-MT,en-NZ,en-US,es,es-AR,es-BO,es-CL,es-CO,es-CR,es-EC,es-ES,es-GT,es-MX,es-NI,es-PA,es-PE,es-PY,es-SV,es-UY,es-VE,et-EE,fi-FI,fr,fr-BE,fr-CA,fr-CH,fr-FR,fr-LU,he-IL,hr-HR,hu-HU,is-IS,it,it-IT,kk-KZ,lt-LT,lv-LV,mk-MK,mt-MT,nb-NO,nl-BE,nl-NL,nn-NO,pl,pl-PL,pt-BR,pt-PT,ro-RO,ru,ru-RU,sh-BA,sk-SK,sl-SI,sq-AL,sr-CS,sv,sv-SE,tr-TR,ar,ca,cz,da,el,et,fi,he,hu,lt,lv,nl,no,no-NO,no-NY,nr,pt,sr-SP,sr-YU,tr,i-default,uk-UA
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_init: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug2: mac_init: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: Peer sent proposed langtags, ctos: ar-EG,ar-SA,bg-BG,ca-ES,cs-CZ,da-DK,de,de-AT,de-CH,de-DE,de-LU,el-CY,el-GR,en-AU,en-CA,en-GB,en-IE,en-MT,en-NZ,en-US,es,es-AR,es-BO,es-CL,es-CO,es-CR,es-EC,es-ES,es-GT,es-MX,es-NI,es-PA,es-PE,es-PY,es-SV,es-UY,es-VE,et-EE,fi-FI,fr,fr-BE,fr-CA,fr-CH,fr-FR,fr-LU,he-IL,hr-HR,hu-HU,is-IS,it,it-IT,kk-KZ,lt-LT,lv-LV,mk-MK,mt-MT,nb-NO,nl-BE,nl-NL,nn-NO,pl,pl-PL,pt-BR,pt-PT,ro-RO,ru,ru-RU,sh-BA,sk-SK,sl-SI,sq-AL,sr-CS,sv,sv-SE,tr-TR,ar,ca,cz,da,el,et,fi,he,hu,lt,lv,nl,no,no-NO,no-NY,nr,pt,sr-SP,sr-YU,tr,i-default,uk-UA
debug1: Peer sent proposed langtags, stoc: ar-EG,ar-SA,bg-BG,ca-ES,cs-CZ,da-DK,de,de-AT,de-CH,de-DE,de-LU,el-CY,el-GR,en-AU,en-CA,en-GB,en-IE,en-MT,en-NZ,en-US,es,es-AR,es-BO,es-CL,es-CO,es-CR,es-EC,es-ES,es-GT,es-MX,es-NI,es-PA,es-PE,es-PY,es-SV,es-UY,es-VE,et-EE,fi-FI,fr,fr-BE,fr-CA,fr-CH,fr-FR,fr-LU,he-IL,hr-HR,hu-HU,is-IS,it,it-IT,kk-KZ,lt-LT,lv-LV,mk-MK,mt-MT,nb-NO,nl-BE,nl-NL,nn-NO,pl,pl-PL,pt-BR,pt-PT,ro-RO,ru,ru-RU,sh-BA,sk-SK,sl-SI,sq-AL,sr-CS,sv,sv-SE,tr-TR,ar,ca,cz,da,el,et,fi,he,hu,lt,lv,nl,no,no-NO,no-NY,nr,pt,sr-SP,sr-YU,tr,i-default,uk-UA
debug1: We proposed langtags, ctos: i-default
debug1: We proposed langtags, stoc: i-default
debug1: Negotiated lang: i-default
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: Remote: Negotiated main locale: C
debug1: Remote: Negotiated messages locale: C
debug1: dh_gen_key: priv key bits set: 129/256
debug1: bits set: 1594/3191
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: check_Host_in_hostfile: filename /home/john/.ssh/known_hosts
debug3: check_Host_in_hostfile: match line 120
debug3: check_Host_in_hostfile: filename /home/john/.ssh/known_hosts
debug3: check_Host_in_hostfile: match line 119
debug1: Host 'fpnld1.uk.db.com' is known and matches the RSA Host key.
debug1: Found key in /home/john/.ssh/known_hosts:120
debug1: bits set: 1573/3191
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
debug3: kex_reset_dispatch -- should we dispatch_set(KEXINIT) here? 0 && !0
debug1: newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: done: ssh_kex2.
debug1: send SSH2_MSG_SERVICE_REQUEST
debug2: service_accept: ssh-userauth
debug1: got SSH2_MSG_SERVICE_ACCEPT
debug1: Authentications that can continue: gssapi-keyex,gssapi-with-mic,publickey,password,keyboard-interactive
debug3: start over, passed a different list gssapi-keyex,gssapi-with-mic,publickey,password,keyboard-interactive
debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup gssapi-keyex
debug3: remaining preferred: gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_is_enabled gssapi-keyex
debug1: Next authentication method: gssapi-keyex
debug2: we did not send a packet, disable method
debug3: authmethod_lookup gssapi-with-mic
debug3: remaining preferred: publickey,keyboard-interactive,password
debug3: authmethod_is_enabled gssapi-with-mic
debug1: Next authentication method: gssapi-with-mic
debug1: Failed to acquire GSS-API credentials for any mechanisms (No credentials were supplied, or the credentials were unavailable or inaccessible
Unknown code 0
)
debug2: we did not send a packet, disable method
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /home/john/.ssh/identity
debug3: no such identity: /home/john/.ssh/identity
debug1: Trying public key: /home/john/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: gssapi-keyex,gssapi-with-mic,publickey,password,keyboard-interactive
debug1: Trying public key: /home/john/.ssh/id_dsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: gssapi-keyex,gssapi-with-mic,publickey,password,keyboard-interactive
debug2: we did not send a packet, disable method
debug3: authmethod_lookup keyboard-interactive
debug3: remaining preferred: password
debug3: authmethod_is_enabled keyboard-interactive
debug1: Next authentication method: keyboard-interactive
debug2: userauth_kbdint
debug2: we sent a keyboard-interactive packet, wait for reply
debug2: input_userauth_info_req
debug2: input_userauth_info_req: num_prompts 1
Password:

johndbb3:/home/john/.ssh>
sshsolarissftpkey-authentication
2
jyz

キーを誤ってコピーした可能性があります。これを試して：

  1. サーバーB（マイクとして）：rm ~/.ssh/authorized_keys
  2. サーバーA（ジョンとして）：ssh-copy-id -i /path/to/id_dsa.pub mike@serverb

ssh-copy-id コマンドは、基本的に（password authを使用して）リモートホストに接続し、authorized_keysを適切に編集します。 OpenSSHで配布されていると思いますが、他のものを使用している場合は利用できない可能性があります。

3
Steven D

ServerBのSSHログにアクセスできますか？そうでない場合、管理者は関連する行をあなたに送信できますか？

ServerBでは、SSHのマンページで説明されているように、正しい権限を持っていることを確認するための権限。

 ~/.ssh/
         This directory is the default location for all user-specific con‐
         figuration and authentication information.  There is no general
         requirement to keep the entire contents of this directory secret,
         but the recommended permissions are read/write/execute for the
         user, and not accessible by others.

 ~/.ssh/authorized_keys
         Lists the public keys (RSA/DSA) that can be used for logging in
         as this user.  The format of this file is described in the
         sshd(8) manual page.  This file is not highly sensitive, but the
         recommended permissions are read/write for the user, and not
         accessible by others.
2
Stefan Lasiewski

SSH公開鍵には少なくとも2つの異なる形式があり、私はOpenSSH形式とPuTTY形式として知っています。ログに「----- BEGIN」に関する苦情が表示されているので、サーバーはOpenSSHスタイルを期待していると思われますが、PuTTYスタイルのキーを指定しています。

OpenSSH形式は、キー全体とコメントを1つのテキスト行に配置し、次のようになります（DSAキーの場合）。

ssh-dss <ASCII-ENCODED-KEY-MATERIAL> my-comment-for-human-convenience

（RSAキーの場合は「ssh-dss」を「ssh-rsa」に置き換えます。）

PuTTYスタイルはより冗長ですが、同じ情報が含まれています。次のようになります。

---- BEGIN SSH2 PUBLIC KEY ----
Comment: "my-comment-for-human-convenience"
<ASCII-ENCODED-KEY-MATERIAL, split into...>
<...multiple lines of 64 characters each>
---- END SSH2 PUBLIC KEY ----

PuTTYgenを使用して2つの形式を変換する （stackoverflowの質問）。または、注意して、PuTTYスタイルのキーがRSAかDSAかがわかっている場合は、キーマテリアルの改行を削除し、「ssh-dss」または「ssh-rsa」を追加することで、一方を他方に手動で変換できます。 " 鬼ごっこ。

0
Jander