Learn Linux with Amin the third use putty, Xshell remote connection Linux and key authentication

The two softwares used in this class are putty, Xshell
Putty:https://the.earth.li/~sgtatham/putty/latest/w64/putty.zip
xshell:https://www.netsarang.com/download/down_form.html?code=622
Note: Putty is a green, free installation software. Xshell Software Personal Edition is free, need to register with the mailbox, after the successful registration, will be sent to the personal mailbox. Powerful, recommended use.

Remote connection of Linux servers via IP address
1 Remote connection using putty:

The interface after successful login:

2 remote connection to Linux using Xshell

The interface after successful login:

Third, key authentication
1 login to Linux with Putty key authentication
The software that needs to be used is puttygen.exe in the putty package above.
The public and private key strings are generated through Puttygen, the public key is used for encryption, and the private key is decrypted.
Copy the generated public key string into the following file
/root/.ssh/authorized_keys
：

Set the permissions of this directory to chmod 700/root/.ssh/
Be sure to turn off SELinux, shutdown method: Setenforce 0 temporarily shut down, fail after reboot
Permanent shutdown Method:
Vi/etc/selinux/config
Change enforcing to Disabled
：

2 Login to Linux with Xshell key authentication
Through the menu tool-New User key Generation Wizard, as shown in section

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Learn Linux with Amin the third use putty, Xshell remote connection Linux and key authentication