How To Install lynis on CentOS 8

lynis is Security and system auditing tool

Introduction

In this tutorial we learn how to install lynis on CentOS 8.

What is `lynis`

Lynis is an auditing and hardening tool for Unix/Linux and you might even call it a compliance tool. It scans the system and installed software. Then it performs many individual security control checks. It determines the hardening state of the machine, detects security issues and provides suggestions to improve the security defense of the system.

We can use yum or dnf to install lynis on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install lynis.

Install lynis on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install lynis using dnf by running the following command:

sudo dnf -y install lynis

Install lynis on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install lynis using yum by running the following command:

sudo yum -y install lynis

How To Uninstall lynis on CentOS 8

To uninstall only the lynis package we can use the following command:

sudo dnf remove lynis

lynis Package Contents on CentOS 8

/etc/lynis
/etc/lynis/default.prf
/usr/bin/lynis
/usr/share/bash-completion/completions/lynis
/usr/share/doc/lynis
/usr/share/doc/lynis/CHANGELOG.md
/usr/share/doc/lynis/CONTRIBUTORS.md
/usr/share/doc/lynis/FAQ
/usr/share/doc/lynis/README
/usr/share/doc/lynis/systemd
/usr/share/doc/lynis/systemd/lynis.service
/usr/share/doc/lynis/systemd/lynis.timer
/usr/share/licenses/lynis
/usr/share/licenses/lynis/LICENSE
/usr/share/lynis
/usr/share/lynis/db
/usr/share/lynis/db/fileperms.db
/usr/share/lynis/db/hints.db
/usr/share/lynis/db/integrity.db
/usr/share/lynis/db/languages
/usr/share/lynis/db/languages/az
/usr/share/lynis/db/languages/br
/usr/share/lynis/db/languages/cn
/usr/share/lynis/db/languages/da
/usr/share/lynis/db/languages/de
/usr/share/lynis/db/languages/de-AT
/usr/share/lynis/db/languages/en
/usr/share/lynis/db/languages/en-GB
/usr/share/lynis/db/languages/en-US
/usr/share/lynis/db/languages/es
/usr/share/lynis/db/languages/fi
/usr/share/lynis/db/languages/fr
/usr/share/lynis/db/languages/gr
/usr/share/lynis/db/languages/he
/usr/share/lynis/db/languages/hu
/usr/share/lynis/db/languages/it
/usr/share/lynis/db/languages/ja
/usr/share/lynis/db/languages/ko
/usr/share/lynis/db/languages/nb-NO
/usr/share/lynis/db/languages/nl
/usr/share/lynis/db/languages/nl-BE
/usr/share/lynis/db/languages/nl-NL
/usr/share/lynis/db/languages/pl
/usr/share/lynis/db/languages/pt
/usr/share/lynis/db/languages/ru
/usr/share/lynis/db/languages/se
/usr/share/lynis/db/languages/sk
/usr/share/lynis/db/languages/tr
/usr/share/lynis/db/malware-susp.db
/usr/share/lynis/db/malware.db
/usr/share/lynis/db/sbl.db
/usr/share/lynis/db/software-eol.db
/usr/share/lynis/db/tests.db
/usr/share/lynis/include
/usr/share/lynis/include/binaries
/usr/share/lynis/include/consts
/usr/share/lynis/include/data_upload
/usr/share/lynis/include/functions
/usr/share/lynis/include/helper_audit_dockerfile
/usr/share/lynis/include/helper_configure
/usr/share/lynis/include/helper_generate
/usr/share/lynis/include/helper_show
/usr/share/lynis/include/helper_system_remote_scan
/usr/share/lynis/include/helper_update
/usr/share/lynis/include/osdetection
/usr/share/lynis/include/parameters
/usr/share/lynis/include/profiles
/usr/share/lynis/include/report
/usr/share/lynis/include/tests_accounting
/usr/share/lynis/include/tests_authentication
/usr/share/lynis/include/tests_banners
/usr/share/lynis/include/tests_boot_services
/usr/share/lynis/include/tests_containers
/usr/share/lynis/include/tests_crypto
/usr/share/lynis/include/tests_custom.template
/usr/share/lynis/include/tests_databases
/usr/share/lynis/include/tests_dns
/usr/share/lynis/include/tests_file_integrity
/usr/share/lynis/include/tests_file_permissions
/usr/share/lynis/include/tests_filesystems
/usr/share/lynis/include/tests_firewalls
/usr/share/lynis/include/tests_hardening
/usr/share/lynis/include/tests_homedirs
/usr/share/lynis/include/tests_insecure_services
/usr/share/lynis/include/tests_kernel
/usr/share/lynis/include/tests_kernel_hardening
/usr/share/lynis/include/tests_ldap
/usr/share/lynis/include/tests_logging
/usr/share/lynis/include/tests_mac_frameworks
/usr/share/lynis/include/tests_mail_messaging
/usr/share/lynis/include/tests_malware
/usr/share/lynis/include/tests_memory_processes
/usr/share/lynis/include/tests_nameservices
/usr/share/lynis/include/tests_networking
/usr/share/lynis/include/tests_php
/usr/share/lynis/include/tests_ports_packages
/usr/share/lynis/include/tests_printers_spoolers
/usr/share/lynis/include/tests_scheduling
/usr/share/lynis/include/tests_shells
/usr/share/lynis/include/tests_snmp
/usr/share/lynis/include/tests_squid
/usr/share/lynis/include/tests_ssh
/usr/share/lynis/include/tests_storage
/usr/share/lynis/include/tests_storage_nfs
/usr/share/lynis/include/tests_system_integrity
/usr/share/lynis/include/tests_time
/usr/share/lynis/include/tests_tooling
/usr/share/lynis/include/tests_usb
/usr/share/lynis/include/tests_virtualization
/usr/share/lynis/include/tests_webservers
/usr/share/lynis/include/tool_tips
/usr/share/lynis/plugins
/usr/share/lynis/plugins/README
/usr/share/lynis/plugins/custom_plugin.template
/usr/share/man/man8/lynis.8.gz
/var/log/lynis-report.dat
/var/log/lynis.log

References

lynis website

Summary

In this tutorial we learn how to install lynis on CentOS 8 using yum and dnf.