Xshell使用密钥登录Linux服务器

男娘i 2022-01-29 19:41 475阅读 0赞

1、使用如下命令生成密钥对  
\[root@xuegod130 ~\]\# ssh-keygen  
Generating public/private rsa key pair.  
Enter file in which to save the key (/root/.ssh/id\_rsa): \#直接回车  
Enter passphrase (empty for no passphrase): \#输入密钥的密码  
Enter same passphrase again: \#再次输入密钥密码  
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:  
SHA256:Y8K3Am4qdviR5IJC0xrVVNPQWHB9eR4fYgXBFh/qd0M root@xuegod130.localdomain  
The key’s randomart image is:  
±–\[RSA 2048\]----+  
| …=Bo. .+\*o |  
| o .oo . Bo+.|  
| . . +.+E+|  
| o . . …|  
| + o. o S . o.|  
|o \*… + o . o|  
|oo.+o . . |  
|oo.+. . |  
|…+. |  
±—\[SHA256\]-----+

2、将密钥文件导入到authorized\_keys文件，因为ssh的配置里面规定了读取密钥是从这个文件来读取的，如下：  
\[root@xuegod130 ~\]\# vim /etc/ssh/sshd\_config  
47 AuthorizedKeysFile .ssh/authorized\_keys  
将密钥文件导入到authorized\_keys文件  
\[root@xuegod130 ~\]\# cd /root/.ssh/  
\[root@xuegod130 .ssh\]\# ls  
id\_dsa id\_dsa.pub  
\[root@xuegod130 .ssh\]\# cat id\_dsa > authorized\_keys  
\[root@xuegod130 .ssh\]\# ls  
authorized\_keys id\_dsa id\_dsa.pub

3、使用xshell登录后，将id\_dsa文件下载本地  
\[root@xuegod130 .ssh\]\# sz id\_dsa

4、修改ssh服务的配置文件，只允许密钥登录  
\[root@xuegod130 ~\]\# vim /etc/ssh/sshd\_config  
64 PasswordAuthentication no \#将yes改为no，不要密码登录

5、重启sshd服务  
\[root@xuegod130 ~\]\# systemctl restart sshd  
6、使用xshell登录  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70 1]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70 3]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70 4]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70 5]  
![在这里插入图片描述][20190529225900769.png]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70]: /images/20220126/8d79b4b19e3b44f4adc18b0d02858a22.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70 1]: /images/20220126/65def333c05c471698217f090e405ea6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70 2]: /images/20220126/876ddbf1ef2548bca9f856c8c107ed8b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70 3]: /images/20220126/d82ce40253694885b5e5bf93d0cb0c2a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70 4]: /images/20220126/db9036b6aba44fceaffba92eaa056682.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTg0MzY5OQ_size_16_color_FFFFFF_t_70 5]: /images/20220126/76b076a31b83453d8f892805371785e0.png
[20190529225900769.png]: /images/20220126/905a23ffcb8748d695a2af1839de9a5f.png