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Raspberry PiでのSSHアクセス許可の拒否（公開鍵）

以前はRaspberry PiへのSSH接続を確立できましたが、突然失敗しました。

通常のログイン方法は、

ssh [email protected]

そしてそれはパスワードを要求するでしょう。

しかし、今日私が仕事から戻ってきたとき、突然アクセスが拒否されましたパスワードを要求することさえありません Raspberry Piは非常に安全な場所に保管されているので、だれも混乱させないでください。私の家族はそれを使用するつもりもないし、使用するつもりもありません。

注意：

  • 接続を確認すると、ポートはアクセス可能です
  • 私はknown_Hostファイルを作成し、キーを再生成して、無効にします。

ここにエラーログがあります

OpenSSH_7.6p1, LibreSSL 2.6.2
debug1: Reading configuration data /Users/rexlow/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 48: Applying options for *
debug1: Connecting to 192.168.0.140 port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /Users/rexlow/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/rexlow/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/rexlow/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/rexlow/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/rexlow/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/rexlow/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/rexlow/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/rexlow/.ssh/id_ed25519-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.6
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7p1 Raspbian-5+deb8u4
debug1: match: OpenSSH_6.7p1 Raspbian-5+deb8u4 pat OpenSSH* compat 0x04000000
debug1: Authenticating to 192.168.0.140:22 as 'pi'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: [email protected]
debug1: kex: Host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [email protected] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [email protected] MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server Host key: ecdsa-sha2-nistp256 SHA256:MXY6qgs+k9+OXkZgXta3cghQaxXN+ATz12dBKSuFE3E
debug1: Host '192.168.0.140' is known and matches the ECDSA Host key.
debug1: Found key in /Users/rexlow/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /Users/rexlow/.ssh/id_rsa
debug1: Trying private key: /Users/rexlow/.ssh/id_dsa
debug1: Trying private key: /Users/rexlow/.ssh/id_ecdsa
debug1: Trying private key: /Users/rexlow/.ssh/id_ed25519
debug1: No more authentication methods to try.
[email protected]: Permission denied (publickey).
linuxsshdebianpermissionsraspberry-pi
2
Rex Low

モニターを取得して/etc/ssh/sshd_configファイルにアクセスできました。

犯人を見つけ、

PasswordAuthentication no

はいに変更され、再び接続できます。

3
Rex Low