Limit Number Of Logins
By default, systems allow us to unlimited logins on the system, but it can create a security issue. So to avoid the security issue, we can limit the number of logins of the user or group of users. We can use maxlogins item to limit the number of logins of users of groups to the system. So to limit 10 logins by the user group gfg, we can use the following limit:
@gfg - maxlogins 10
limits.conf File To Limit Users, Process In Linux With Examples
Linux gives full control over the system. In this article, we are going to learn about the file limits.conf. limits.conf is a configuration that is used to limit the resources to the user, groups. Now let’s understand the file structure of limits.conf and how can we use the limits.conf to limit resources to the user. Before moving further, note that to edit this file, you must have root permission.
The complete path of the limits.config is :
/etc/security/limits.conf
pam_module is a module that uses ulimit command to apply limits from limits.conf file.
The basic syntax of the limits.conf file is :
<domain><type><item><value>
Now let’s understand each field one by one