Linux ssh password-free login, linuxssh password-free Login

Linux ssh password-free login, linuxssh password-free Login

 

Target: Local Machine ssh Login remote target machine without entering a password (by default, ssh user@192.xxx.x.xxx requires a password)

Principle: PassPublic Key and Private KeyImplement system authentication

Implementation:Public KeyCopy to target machine

 

Details:

1. Generate a public key/private key pair on the local machine (skip this step if it has already been executed)

Ssh-keygen-t rsa

Or ssh-keygen-t rsa-p''

-P indicates the password.-P ''indicates that the password is empty, or you do not need the-P parameter. In this case, you have to press enter three times and press enter once with-P.

The command is in ~ The/. ssh/directory generates two files: id_rsa (Private Key) and id_rsa.pub (Public Key)

 

2. Copy the public key of the local machine to the target machine.

Method 1:

Ssh-copy-id user@192.xxx.x.xxx

This command will copy the public key of the local machine to ~ /. Ssh/authorized_keys File

 

Method 2:

Scp ~ /. Ssh/id_rsa.pub user@192.xxx.x.xxx :~ /. Ssh/

Cat id_dsa.pub >> ~ /. Ssh/authorized_keys

(Or directly scp ~ /. Ssh/id_rsa.pub user@192.xxx.x.xxx :~ /. Ssh/authorized_keys)

 

3. Then, log on to the remote machine using ssh remote_host without the password.

 

Refer:

Use ssh-keygen and ssh-copy-id to achieve SSH password-less Login

Ssh-keygen to generate key settings, so that ubuntu can log on to linux without a password

How to use ssh-keygen