配置Linux 免密碼登陸

配置Linux 免密碼登陸
1 生成秘鑰對，一路回車就好
２ 修改公鑰名稱為authorized_keys
3 修改權限為600
4 修改sshd配置文件
5 重啟sshd服務

配置Linux 免密碼登陸

友情提示：
如果需要實現xshell 等終端工具實現免密碼登陸的，在生成密鑰對的時候，務必先把id_rsa就拷貝出來，不然到時候你配置好了的時候，通過xftp等工具拷貝文件出來，發現本地沒有密鑰文件，到時候就是死循環了。切記切記！！

1 生成秘鑰對，一路回車就好

[root@localhost ~]# ssh-keygen Generating public/private rsa key pair.Enter file in which to save the key (/root/.ssh/id_rsa): Created directory '/root/.ssh'.Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /root/.ssh/id_rsa.Your public key has been saved in /root/.ssh/id_rsa.pub.The key fingerprint is:92:98:a4:6d:a3:bf:04:67:f5:5f:d9:e2:9f:e1:b8:c1 [email protected] key's randomart image is:+--[ RSA 2048]----+|                 ||                 ||    . .          ||   + + o     o   ||  o O o S   + .  ||   * . . . + .   ||  . .     . E .  ||   o         = o ||    o.      o.+  |+-----------------+[root@localhost ~]#

２ 修改公鑰名稱為authorized_keys

[root@localhost .ssh]# cd /root/.ssh/[root@localhost .ssh]# cat id_rsa.pub >authorized_keys

3 修改權限為600

[root@localhost .ssh]# chmod 600 authorized_keys

4 修改sshd配置文件

[root@localhost .ssh]# vi /etc/ssh/sshd_config RSAAuthentication yesPubkeyAuthentication yesAuthorizedKeysFile      .ssh/authorized_keysPasswordAuthentication no

5 重啟sshd服務

[root@localhost .ssh]# service sshd restartStopping sshd:                                             [  OK  ]Starting sshd:                                             [  OK  ][root@localhost .ssh]#

最後拷貝is_rsa 到任意地方保存即可實行無密碼登陸
本文出自 “9462880” 博客，請務必保留此出處http://9472880.blog.51cto.com/9462880/1771312