SSH禁用密码validation
我正在寻找一种方法来禁用ssh客户端访问密码提示，如这里所述
我无法禁用根login的password:提示。 我已经将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？ 这是否需要我有密码？
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
# Change to no to disable tunnelled clear text passwords #PasswordAuthentication no
取消第二行的注释
跑
service ssh restart
代替
/etc/init.d/ssh restart
这可能工作。
这里是一个脚本自动执行此操作
# 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
如何禁用SSH的密码validation
一旦configuration了SSH密钥，您可以通过禁用SSH密码authentication来为服务器添加一些额外的安全性。 （请注意，如果确实丢失了私钥，这将使服务器无法访问，您需要联系pipe理员才能重新启用此function。）
要禁用此设置，您可以执行以下操作：
nano /etc/ssh/sshd_config
在此文件中，将以下设置设置为以下值。 如果这些设置已经在文件中，请将其设置为“否”，而不是添加新行。
ChallengeResponseAuthentication no PasswordAuthentication no UsePAM no
完成此操作后，重新启动SSH守护程序以应用设置。
/etc/init.d/sshd restart
这是从我有一个教程：
在你的机器上作为root用户：
ssh-keygen -t rsa
并将密码留空
从你的本地机器:(你将不得不input密码）
ssh root@remotemachine mkdir -p .ssh
然后：
cat .ssh/id_rsa.pub | ssh root@remotemachine 'cat >> .ssh/authorized_keys'
现在你可以不用提示就login了
ssh root@remotemachine
链接： http : //www.linuxproblem.org/art_9.html如果您有任何问题！
