Modify the root password of Ubuntu and allow only certificate login settings
Source: Internet
Author: User
Ubuntu: change the root password and allow only certificate login settings 1. modify the root password www.2cto. comJava code 1. sudopasswd2.Password: 3. EnternewUNIXpassword: 4. RetypenewUNIXpassword: 5. pa...
Ubuntu allows you to change the root password and only allow the certificate to log in. 1. modify the root password www.2cto.com Java code 1. sudo passwd 2. password: 3. enter new UNIX password: 4. retype new UNIX password: 5. passed: finished update successfully. 2. modification only allows the certificate to log on to www.2cto.com Java code 1. modify/etc/ssh/sshd. conf 2. set PermitRootLogin without-password # In this way, the root user cannot log on to the computer without a key. 3. setting PermitRootLogin to no will disable root user login.
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