我正在寻找一种方法来禁用ssh客户端访问密码提示，如上所述here
我无法禁用Root Login的password: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
答案 0 :(得分：135)
/etc/ssh/sshd_config 中的
# 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。
然后运行
service ssh restart
答案 1 :(得分：14)
运行
service ssh restart
而不是
/etc/init.d/ssh restart
这可能有用。
答案 2 :(得分：12)
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
答案 3 :(得分：2)
禁用SSH密码身份验证的一线工具：
res = mod.fit()
res.summary()
OLS Regression Results
==============================================================================
Dep. Variable: y R-squared: 1.000
Model: OLS Adj. R-squared: nan
Method: Least Squares F-statistic: nan
Date: Sun, 30 Aug 2020 Prob (F-statistic): nan
Time: 14:28:28 Log-Likelihood: 66.947
No. Observations: 2 AIC: -129.9
Df Residuals: 0 BIC: -132.5
Df Model: 1
Covariance Type: nonrobust
==============================================================================
coef std err t P>|t| [0.025 0.975]
------------------------------------------------------------------------------
x1 0.5000 inf 0 nan nan nan
x2 0.5000 inf 0 nan nan nan
x3 1.0000 inf 0 nan nan nan
==============================================================================
Omnibus: nan Durbin-Watson: 0.200
Prob(Omnibus): nan Jarque-Bera (JB): 0.333
Skew: 0.000 Prob(JB): 0.846
Kurtosis: 1.000 Cond. No. 3.23
==============================================================================
Warnings:
[1] Standard Errors assume that the covariance matrix of the errors is correctly specified.
[2] The input rank is higher than the number of observations.
"""
答案 4 :(得分：1)
我按照以下步骤操作（对于Mac）
在/etc/ssh/sshd_config
更改此
#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 key有效。dsa key不起作用）。
密钥将与~/.ssh/id_rsa一起在~/.ssh/id_rsa.pub中生成
现在移到.ssh文件夹：cd ~/.ssh
输入rm -rf authorized_keys（有时多个键会导致错误）。
输入vi authorized_keys
输入:wq保存此空文件
输入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
答案 5 :(得分：-7)
这是我的教程：
以root身份登录您的计算机：
ssh-keygen -t rsa
并将密码留空
从本地计算机:(并且您必须输入密码）
ssh root@remotemachine mkdir -p .ssh
然后：
cat .ssh/id_rsa.pub | ssh root@remotemachine 'cat >> .ssh/authorized_keys'
现在您可以在没有pw提示的情况下登录
ssh root@remotemachine
链接：http://www.linuxproblem.org/art_9.html如果您有任何问题！