ssh 免密码论证连接

标签：ssh 免密码论证连接 ssh公钥 ssh私钥

1.生成公钥和私钥
   ssh-keygen -t dsa
2.发送公钥
  oldboy888@ser200 .ssh]$ ssh-copy-id  -i id_dsa.pub "-p 20000 oldboy888@192.168.1.201"
10
The authenticity of host ‘192.168.1.201 (192.168.1.201)‘ can‘t be established.
RSA key fingerprint is 0a:13:db:54:60:3e:85:46:b5:ea:d5:b9:c0:5e:51:74.
Are you sure you want to continue connecting (yes/no)? 
Host key verification failed.
[oldboy888@ser200 .ssh]$ ssh-copy-id  -i id_dsa.pub "-p 20000 oldboy888@192.168.1.201"> ;
10
The authenticity of host ‘192.168.1.201 (192.168.1.201)‘ can‘t be established.
RSA key fingerprint is 0a:13:db:54:60:3e:85:46:b5:ea:d5:b9:c0:5e:51:74.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘192.168.1.201‘ (RSA) to the list of known hosts.
oldboy888@192.168.1.201‘s password: 
Now try logging into the machine, with "ssh ‘-p 20000 oldboy888@192.168.1.201‘", and check in:

  .ssh/authorized_keys

to make sure we haven‘t added extra keys that you weren‘t expecting.

3.检查是否免密码论证
  [oldboy888@ser200 .ssh]$ ssh -p2000 oldboy888@192.168.1.201 free -m
ssh: connect to host 192.168.1.201 port 2000: Connection refused
[oldboy888@ser200 .ssh]$ ssh -p20000 oldboy888@192.168.1.201 free -m
             total       used       free     shared    buffers     cached
Mem:           484         71        412          0          9         30
-/+ buffers/cache:         31        452
Swap:         1027          0       1027

本文出自 “蜘蛛侠” 博客，请务必保留此出处http://txidc.blog.51cto.com/9138217/1562397

ssh 免密码论证连接

标签：ssh 免密码论证连接 ssh公钥 ssh私钥

原文地址：http://txidc.blog.51cto.com/9138217/1562397