SSH禁用密码验证

Question

我正在寻找一种方式来访问密码提示禁用SSH客户端的注意这里

我无法禁用password:Root Login 的提示.我已将sshd_config文件更改为:

ChallengeResponseAuthentication no
PasswordAuthentication no
UsePAM no

并且还更改了权限chmod 700 ~/.ssh和chmod 600 ~/.ssh/authorized_keys.我错过了什么？这需要我有密码吗？

详细转储:

debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/user/.ssh/id_rsa
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /home/user/.ssh/id_dsa
debug1: Trying private key: /home/user/.ssh/id_ecdsa
debug1: Next authentication method: password

的/ etc/SSH/sshd_config中:

# Package generated configuration file
# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::
#ListenAddress 0.0.0.0
Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
#Privilege Separation is turned on for security
UsePrivilegeSeparation yes

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 768

# Logging
SyslogFacility AUTH
LogLevel INFO

# Authentication:
LoginGraceTime 120
PermitRootLogin no
StrictModes yes

RSAAuthentication yes
PubkeyAuthentication yes
#AuthorizedKeysFile %h/.ssh/authorized_keys

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2
HostbasedAuthentication no
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords no

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no

# Change to no to disable tunnelled clear text passwords
#PasswordAuthentication no

# Kerberos options
#KerberosAuthentication no
#KerberosGetAFSToken no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
#UseLogin no

#MaxStartups 10:30:60
Banner /etc/issue.net

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

Subsystem sftp /usr/lib/openssh/sftp-server

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM no

Answer 1

在 /etc/ssh/sshd_config

# Change to no to disable tunnelled clear text passwords
#PasswordAuthentication no

取消注释第二行,如果需要,将yes更改为no.

然后跑

service ssh restart

Answer 2

跑

service ssh restart

代替

/etc/init.d/ssh restart

这可能会奏效.

Answer 3

这是一个自动执行此操作的脚本

# only allow key based logins
sed -n 'H;${x;s/\#PasswordAuthentication yes/PasswordAuthentication no/;p;}' /etc/ssh/sshd_config > tmp_sshd_config
cat tmp_sshd_config > /etc/ssh/sshd_config
rm tmp_sshd_config 

Answer 4

我按照以下步骤操作（适用于 Mac）。

在/etc/ssh/sshd_config变革

#ChallengeResponseAuthentication yes
#PasswordAuthentication yes

到

ChallengeResponseAuthentication no
PasswordAuthentication no

现在生成 RSA 密钥：

ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa

（对我来说，RSA 密钥有效。DSA密钥无效。）

私钥将~/.ssh/id_rsa与~/.ssh/id_rsa.pub（公钥）一起生成。

现在移动到.ssh文件夹：cd ~/.ssh

Enter rm -rf authorized_keys（有时多个键会导致错误）。

进入vi authorized_keys

输入:wq保存这个空文件

进入cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

重新启动 SSH：

sudo launchctl stop com.openssh.sshd
sudo launchctl start com.openssh.sshd