Linux Security Operations (i)

1. Delete special users and user groups:

Linux provides a variety of different roles of the system account, after the installation of the system, the default installs a lot of unnecessary users and user groups, if you do not need some users or groups, should delete them immediately, because the more accounts, the system is more insecure, it is likely to be used by XXX, threatening the server security.

The default users and groups of users that can be deleted from the Linux system are roughly the following:

-Removable User: ADM LP sync shutdown halt UUCP operator Games Gopher etc.

Removable user groups: ADM LP UUCP Games dip, etc.

Command:

Remove unnecessary user commands from the system:

[Email protected] ~]# Userdel ADM

Remove the system unnecessary user Group command:

[Email protected] ~]# Groupdel ADM

There are times when some users simply call the job process or the user group and do not require a login function, which can disable the ability of these users to log on to the system, for example to prevent

Linux Security Operations (i)