无法设置 ssh 无密码身份验证
我无法通过 Windows 客户端的无密码身份验证 ssh 到 UBuntu 服务器。UBuntu 上的 ssh 版本是 OpenSSH_5.8p1 Debian-7ubuntu1, OpenSSL 1.0.0e ，而 Windows 客户端上的 SSH 版本是 OpenSSH_5.1p1, OpenSSL 0.9.8k。我打开 ssh 调试并注意到服务器和客户端上的这些消息：
/usr/bin/sshd -d -p 2222 on server
adminuser@server:~/.ssh$ /usr/sbin/sshd -d -p 2222
debug1: sshd version OpenSSH_5.8p1 Debian-7ubuntu1
debug1: could not open key file '/etc/ssh/ssh_host_rsa_key': Permission denied
Could not load host key: /etc/ssh/ssh_host_rsa_key
debug1: could not open key file '/etc/ssh/ssh_host_dsa_key': Permission denied
Could not load host key: /etc/ssh/ssh_host_dsa_key
debug1: could not open key file '/etc/ssh/ssh_host_ecdsa_key': Permission denied
Could not load host key: /etc/ssh/ssh_host_ecdsa_key
debug1: setgroups() failed: Operation not permitted
debug1: rexec_argv[0]='/usr/sbin/sshd'
debug1: rexec_argv[1]='-d'
debug1: rexec_argv[2]='-p'
debug1: rexec_argv[3]='2222'
Set /proc/self/oom_score_adj from 0 to -1000
debug1: Bind to port 2222 on 0.0.0.0.
Server listening on 0.0.0.0 port 2222.
debug1: Bind to port 2222 on ::.
Server listening on :: port 2222.
debug1: Server will not fork when running in debugging mode.
debug1: rexec start in 5 out 5 newsock 5 pipe -1 sock 8
debug1: inetd sockets after dupping: 3, 3
Connection from 10.221.84.65 port 2414
debug1: Client protocol version 2.0; client software version OpenSSH_5.1
debug1: match: OpenSSH_5.1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.8p1 Debian-7ubuntu1
debug1: list_hostkey_types:
No supported key exchange algorithms
debug1: do_cleanup
debug1: do_cleanup
ssh -vvv on client
C:\Documents and Settings\clientuser>ssh -vvv -p 2222 adminuser@server.com
OpenSSH_5.1p1, OpenSSL 0.9.8k 25 Mar 2009
debug2: ssh_connect: needpriv 0
debug1: Connecting to server.com port 2222.
debug1: Connection established.
debug1: identity file /cygdrive/c/Documents and Settings/clientuser/.ssh/identity type -1
debug3: Not a RSA1 key file /cygdrive/c/Documents and Settings/clientuser/.ssh/
id_rsa.
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug3: key_read: missing keytype
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug2: key_type_from_name: unknown key type '-----END'
debug3: key_read: missing keytype
debug1: identity file /cygdrive/c/Documents and Settings/clientuser/.ssh/id_rsa
type 1
debug1: identity file /cygdrive/c/Documents and Settings/clientuser/.ssh/id_dsa
type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.8p1 Debia
n-7ubuntu1
debug1: match: OpenSSH_5.8p1 Debian-7ubuntu1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.1
debug2: fd 3 setting O_NONBLOCK
debug1: SSH2_MSG_KEXINIT sent
Read from socket failed: Connection reset by peer
我验证了主机上的 authorized_keys、.ssh 等权限是正确的。我重新生成了主机密钥以绕过“无法加载主机密钥”并重新启动 ssh 服务，但问题仍然存在。关于什么可能是错的任何建议？主机私钥无法加载，因为它们归“root”用户所有。不允许将其权限更改为模式 600 以外的任何内容。我被困在这一点上..请帮忙！欣赏它！