☰

尽管我已经更新了远程计算机上的密钥，为什么我的 ssh 连接未经授权？

tag-icon • tag-icon linux ssh authentication
尽管我已经更新了远程计算机上的密钥，为什么我的 ssh 连接未经授权？

在我的本地计算机上，我有一个公钥存储在

.ssh/id_rsa.pub

为了能够登录到远程计算机，我使用以下命令复制此密钥ssh-copy-id：

ssh-copy-id user@remote-host

在远程主机上，我看到文件中添加了两行，.ssh/authorized_keys以ssh-dss和开头ssh-rsa，以本地计算机信息结尾。

但是，当我现在使用以下命令登录远程计算机时

ssh user@remote-host

仍然要求我输入密码。这是为什么？如何解决？

  • 文件权限authorized_keys正确。
  • 以下是结果ssh -v：

OpenSSH_5.9p1 Debian-5ubuntu1.1, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to xxx [xxx] port 22.
debug1: Connection established.
debug1: identity file /home/alexander/.ssh/id_rsa type 1
debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048
debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048
debug1: identity file /home/alexander/.ssh/id_rsa-cert type -1
debug1: identity file /home/alexander/.ssh/id_dsa type 2
debug1: Checking blacklist file /usr/share/ssh/blacklist.DSA-1024
debug1: Checking blacklist file /etc/ssh/blacklist.DSA-1024
debug1: identity file /home/alexander/.ssh/id_dsa-cert type -1
debug1: identity file /home/alexander/.ssh/id_ecdsa type -1
debug1: identity file /home/alexander/.ssh/id_ecdsa-cert type -1
debug1: Remote protocol version 2.0, remote software version dropbear_0.52
debug1: no match: dropbear_0.52
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1.1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: sending SSH2_MSG_KEXDH_INIT
debug1: expecting SSH2_MSG_KEXDH_REPLY
debug1: Server host key: RSA XXXX
debug1: Host 'remote_host' is known and matches the RSA host key.
debug1: Found key in /home/alexander/.ssh/known_hosts:26
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Offering DSA public key: /home/alexander/.ssh/id_dsa
debug1: Authentications that can continue: publickey,password
debug1: Offering RSA public key: /home/alexander/.ssh/id_rsa
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /home/alexander/.ssh/id_ecdsa
debug1: Next authentication method: password
user@remote_host's password:

答案1

您需要将内容转移到远程主机目录，否则它将无法确认新密钥并且 chmod 700（不是 600）两个 .ssh 目录（本地和远程主机）。

生成新的密钥对后，在本地主机上输入命令，cat .ssh/id_rsa.pub | ssh <user>@<remotehost> 'cat >> .ssh/authorized_keys'这将获取本地计算机上授权密钥的输出，并将其也放置在远程计算机上。此外，您需要确保您具有 RWX 访问权限，而不仅仅是 RW。

相关内容