Raspberry PiでSFTPのトラブルシューティング

Raspberry PiでSFTPのトラブルシューティング

SFTPと共有されるRaspiにフォルダを作成しようとしています。フォルダ管理権限に関していくつかの問題があることが報告されました。これらの問題を解決する努力は役に立たないようです。問題をシミュレートできるようにすべてを報告します。

私は/etc/ssh/sshd_config以下を置きました:グループはどこにありますか?那須ユーザーを含める那須訪問

SubSystem nas internal-sftp
Match Group nas
    ChrootDirectory %h
    ForceCommand internal-sftp
    AllowTcpForwarding no

それから

sudo groupadd nas
sudo gpasswd -a nasaccess nas

そしてルートリング:

sudo chown root:nasaccess /home/nasaccess
sudo chmod 750 /home/nasaccess 

そして内部にフォルダを追加しました。

sudo mkdir /home/nasaccess/files
sudo chown nasaccess: /home/nasaccess/files
sudo chmod 750 /home/nasaccess/files

SSHサービスを再起動してnasaccessに接続すると、次のようになります。

Write failed: Broken pipe                                                                                               
Couldn't read packet: Connection reset by peer

所属していないユーザー那須期待どおりにフルSFTPアクセスが可能です。なぜ?ランダム検索で見つかったトラブルシューティングは現在機能しているようです。

Vorboseモードは次の機能を提供します。

sudo sftp -vvv nasaccess@localhost
OpenSSH_6.0p1 Debian-4+deb7u2, OpenSSL 1.0.1e 11 Feb 2013
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to localhost [127.0.0.1] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.0p1 Debia                 n-4+deb7u2
debug1: match: OpenSSH_6.0p1 Debian-4+deb7u2 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.0p1 Debian-4+deb7u2
debug2: fd 3 setting O_NONBLOCK
debug3: load_hostkeys: loading entries for host "localhost" from file "/root/.ss                 h/known_hosts"
debug3: load_hostkeys: found key type ECDSA in file /root/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys
debug3: order_hostkeyalgs: prefer hostkeyalgs: ecdsa-sha2-nistp256-cert-v01@open                 ssh.com,[email protected],ecdsa-sha2-nistp521-cert-v01@op                 enssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp                 521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diff                 ie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: [email protected],ecdsa-sha2-n                 [email protected],[email protected],ecdsa-sha2                 -nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],s                 [email protected],[email protected],ssh-dss-cert-v00@openss                 h.com,ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour12                 8,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rij                 [email protected]
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour12                 8,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rij                 [email protected]
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-sha2-256,                 hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@op                 enssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-sha2-256,                 hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@op                 enssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,[email protected],zlib
debug2: kex_parse_kexinit: none,[email protected],zlib
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp                 521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diff                 ie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour12                 8,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rij                 [email protected]
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour12                 8,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rij                 [email protected]
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-sha2-256,                 hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@op                 enssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-sha2-256,                 hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@op                 enssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,[email protected]
debug2: kex_parse_kexinit: none,[email protected]
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_setup: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug2: mac_setup: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA 50:ed:ea:a5:d5:7a:5a:f0:ab:09:d6:e4:e4:e9:7c:d3
debug3: load_hostkeys: loading entries for host "localhost" from file "/root/.ss                 h/known_hosts"
debug3: load_hostkeys: found key type ECDSA in file /root/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys
debug1: Host 'localhost' is known and matches the ECDSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: ssh_ecdsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /root/.ssh/id_rsa ((nil))
debug2: key: /root/.ssh/id_dsa ((nil))
debug2: key: /root/.ssh/id_ecdsa ((nil))
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,pa                 ssword
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/id_rsa
debug3: no such identity: /root/.ssh/id_rsa
debug1: Trying private key: /root/.ssh/id_dsa
debug3: no such identity: /root/.ssh/id_dsa
debug1: Trying private key: /root/.ssh/id_ecdsa
debug3: no such identity: /root/.ssh/id_ecdsa
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
nasaccess@localhost's password:
debug3: packet_send2: adding 48 (len 63 padlen 17 extra_pad 64)
debug2: we sent a password packet, wait for reply
debug1: Authentication succeeded (password).
Authenticated to localhost ([127.0.0.1]:22).
debug2: fd 4 setting O_NONBLOCK
debug3: fd 5 is O_NONBLOCK
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug1: Requesting [email protected]
debug1: Entering interactive session.
Write failed: Broken pipe
Couldn't read packet: Connection reset by peer

ベストアンサー1

キーワード構文がSubsystem正しくありません。この試み:

Subsystem internal-sftp

Match Group nas
    ChrootDirectory %h
    ForceCommand internal-sftp
    AllowTcpForwarding no

/var/log/auth.logサーバーを見てみると(はい、localhostあなたの場合であることを知っています)、次のメッセージが表示されます。

Jul  7 22:46:24 localhost sshd[30701]: Accepted publickey for jsmith from 192.168.56.1 port 61983 ssh2: RSA 86:87:b7:08:15:5e:a4:7b:32:ba:c8:fa:84:89:45:4c
Jul  7 22:46:24 localhost sshd[30701]: pam_unix(sshd:session): session opened for user jsmith by (uid=0)
Jul  7 22:46:25 localhost sshd[30706]: subsystem request for sftp by user jsmith failed, subsystem not found
Jul  7 22:46:25 localhost sshd[30701]: pam_unix(sshd:session): session closed for user jsmith

ここでキーは最後の行から2番目です。ユーザー jsmith の sftp に対するサブシステム要求が失敗しました。サブシステムが見つかりません。、これはサブシステムコマンドに問題があることを示します。から探すsshd_config のマニュアルページその後、正しい構文を案内することができます。

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