Centos7 password login failed to lock out user settings

This article mainly explains "Centos7 password login failure lock user settings", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Next let the editor to take you to learn the "Centos7 password login failure lockout user settings" bar!

My environment is Centos7.

Server 1RV 172.16.1.15

Server 2RV 172.16.1.16

Edit the / etc/pam.d/sshd of 172.16.1.16 to add a red box on the second line

Indicates that the default return value is defined when an error occurs

Even_deny_root also restricts root users.

Deny means to set the maximum number of consecutive error logins for ordinary users and root users. If the maximum number of times is exceeded, the user will be locked.

Unlock_time indicates how long it takes to unlock after setting the lock for an ordinary user (in seconds)

Root_unlock_time indicates how long it takes to unlock automatically after the root user is locked, otherwise manually (in seconds).

Next, test using the 172.16.1.15 aaa account ssh to connect to the 172.16.1.16 bbb account

Thus it can be seen that login is not allowed if the correct input is entered in time for the third time.

Next, use this command to unlock and log in normally.

At this point, I believe that you have a deeper understanding of the "Centos7 password login failure lockout user settings", might as well come to the actual operation! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!