mac无密登陆到linux

Posted 2020-08-13

最近弄了台linux云服务器，然而每次登陆linux都好麻烦，所以倒腾了下ssh无密登陆。

linux：centos 6.5，自带ssh

mac：yosemite，自带ssh

 

步骤：

1. 创建key

?  .ssh ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/Users/yinkw/.ssh/id_rsa):        <--直接回车
Enter passphrase (empty for no passphrase):                            <--直接回车
Enter same passphrase again: 
Your identification has been saved in /Users/yinkw/.ssh/id_rsa.
Your public key has been saved in /Users/yinkw/.ssh/id_rsa.pub.
The key fingerprint is:
07:20:96:中间这一段藏起来:d1 [email protected]
The key‘s randomart image is:
+--[ RSA 2048]----+
|    ooooo=o+     |
|   ...+o= + E    |
|     . *.+ .     |
|      . =.+      |
|        S=..     |
|         .o      |
|                 |
|                 |
|                 |
+-----------------+
?  .ssh ll
total 16
-rw-------  1 yinkw  staff   1.6K 10  6 12:11 id_rsa           <--私钥
-rw-r--r--  1 yinkw  staff   399B 10  6 12:11 id_rsa.pub       <--公钥

2. 拷贝公钥到linux

?  .ssh scp id_rsa.pub [email protected]19.29.～～:~/.ssh
[email protected]119.29.～～‘s password: 
id_rsa.pub                                                                                   100%  399     0.4KB/s   00:00

3. linux，公钥内容追加到authorized_keys

[[email protected]]~/.ssh# ll
总用量 4
-rw-r--r-- 1 root root   0 9月  15 00:27 authorized_keys
-rw-r--r-- 1 root root 399 10月  6 12:26 id_rsa.pub
[[email protected]]~/.ssh# cat id_rsa.pub >> authorized_keys

4. mac测试

?  ~ ssh [email protected]119.29.～～                                                      
Last login: Thu Oct  6 12:06:38 2016 from 101.106.～～

诶诶，这是怎么回事，没用重启sshd服务，却已经可以使用rsakey登陆了

 

5. linux关闭passwd登陆

/etc/ssh/sshd_config：

PermitEmptyPasswords no

关掉passwd登陆后自我感觉安全多了

 

--done--