Install HP ArcSight

[root@Kilo~]# useradd kilo_arc

[root@Kilo~]# vim /etc/security/limits.d/90-nproc.conf

    # Default limit for number of user's processes to prevent

    # accidental fork bombs.

    # See rhbz #432903 for reasoning.

    * soft nproc 1024

    root soft nproc unlimited

    * soft nproc 10240

Lynis - Security auditing tool

Lynis is a security auditing for UNIX derivatives like Linux, macOS, BSD, and others. It performs an in-depth security scan and runs on the system itself. The primary goal is to test security defenses and provide tips for further system hardening. It will also scan for general system information, vulnerable software packages, and possible configuration issues. Lynis was commonly used by people in the "blue team" to assess the security defenses of their systems. Nowadays, penetration testers also have Lynis in their toolkit.


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https://github.com/CISOfy/lynis

What is Lynis