sshd service provides two security authentication methods:
Verify password-based security: Proven account number and password to log in to the remote host.
For security authentication key: the need to generate a "key" will transfer to the public service side, to compare the public key (relatively safe) locally.
First install ssh
Enter the command yum install openssh *
Enter the command rpm -qa | grep openssh if reality has the following three services then we do not need to install or uninstall ssh
Then we open the file on the server folder part Change
Enter the command vim / etc / ssh / ssh_config
Change follows several places
Restart the ssh service to take effect
Enter the command systemctl restart sshd
Here we configure the keys in the client
First make sure the client and server can communicate
The client ping 192.168.39.100 (this is my server's IP)
In the server ping 192.168.39.20 (this is my client's IP)
At this time, if interworking, you may continue to operate
In the client configuration keys
Enter the command ssh-keygen
Then the server secret key transmitted to the client
Then you can enter the command ssh 192.168.39.100 remotely via an ssh connection service to both the
