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1. Create. Ssh/authorized_keys in the user directory

Mkdir. SSH

# Modifying File Access Permissions

Chmod 700. SSH

CD. SSH

Mkdir authorized_keys

# Modifying File Access Permissions

Chmod 600 authorized_keys

2. Configure/etc/ssh/sshd-config

Vim/etc/ssh/sshd-config

# Set whether to restrict root logon

Permitrootlogin No

Rsaauthentication Yes
Pubkeyauthentication Yes
Authorizedkeysfile. Ssh/authorized_keysPermitemptypasswords No
Passwordauthentication No

3. Restart sshd.

Service sshd restart

 

Centos RSA Logon