Shulou(Shulou.com)06/03 Report--

Today, what the editor shares with you is a detailed introduction of the command history automatic logout and account security control in Linux Centos7. I believe most people do not know much about it. In order to make you understand better, the editor summarized the following content for you. Without saying much, let's move on.

one。 Account security control

The user account is the identity certificate or identity of the computer user, and everyone who wants to access the system resources must rely on it to use

Only the account number can access the computer. In the Linux system, a variety of mechanisms are provided to ensure the legitimacy and security of user accounts.

Use it.

1. System account cleaning *

Hattr + I / etc/passwd / etc/shadow

Lock users and password files

Lsattr / etc/passwd / etc/shadow

View file status

Chattr-I / etc/passwd / etc/shadow

Unlock user and password file

two。 Password security control

In an insecure network environment, in order to reduce the risk that passwords are guessed or broken by violence, users should get into the habit of changing passwords regularly and avoid using the same password for a long time. The administrator can limit the maximum valid days of the user's password on the server side. For users whose password has expired, they will be required to reset the password when logging in, otherwise the login will be refused.

Vim / etc/login.defs

PASS_MAX_DAYS 30

Valid for new users only

Chage-M 30 wangwu

Applicable to existing users

Chage-d 0 user name

Change the password next time you log in

But it must be discontinuous Arabic numerals and letters.

More than eight, or you can't change the password.

3. Automatic logout of command history

Vim / etc/profile system environment variable configuration file

Source / etc/profile makes your profile effective

Vim / etc/profile system environment variable configuration file

Export TMOUT=15

Source / etc/profile makes your profile effective

So much for the automatic logout of Linux Centos7 command history and account security control. I hope the above content can be helpful to you and learn more knowledge. If you like this article, you might as well share it for more people to see.

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