RedHat Enterprise Linux 6 CIS compliancy.

Based on the exellent work done by the MindPointGroup Ansible Role](https://galaxy.ansible.com/MindPointGroup/RHEL7-CIS/)

Configure RHEL/Centos 6 machine to be CIS compliant. Level 1 and 2 findings will be corrected by default.

Warning on use

This role will make changes to the system that could break things. This is not an auditing tool but rather a remediation tool to be used after an audit has been conducted.

IMPORTANT INSTALL STEP

If you want to install this via the ansible-galaxy command you'll need to run it like this:

ansible-galaxy install -p roles -r requirements.yml

With this in the file requirements.yml:

- src: https://github.com/schubergphilis/RHEL6-CIS.git

Based on CIS RedHat Enterprise Linux 6 Benchmark v2.1.0 - 12-27-2017 .

This repo originated from work done by Sam Doran

Requirements

You should carefully read through the tasks to make sure these changes will not break your systems before running this playbook. If you want to do a dry run without changing anything, set the below sections (rhel6cis_section1-6) to false.

Role Variables

There are many role variables defined in defaults/main.yml. This list shows the most important.

rhel6cis_notauto: Run CIS checks that we typically do NOT want to automate due to the high probability of breaking the system (Default: false)

rhel6cis_section1: CIS - General Settings (Section 1) (Default: true)

rhel6cis_section2: CIS - Services settings (Section 2) (Default: true)

rhel6cis_section3: CIS - Network settings (Section 3) (Default: true)

rhel6cis_section4: CIS - Logging and Auditing settings (Section 4) (Default: true)

rhel6cis_section5: CIS - Access, Authentication and Authorization settings (Section 5) (Default: true)

rhel6cis_section6: CIS - System Maintenance settings (Section 6) (Default: true)

Disable all selinux functions

rhel6cis_selinux_disable: false

Service variables:

These control whether a server should or should not be allowed to continue to run these services

rhel6cis_avahi_server: false  
rhel6cis_cups_server: false  
rhel6cis_dhcp_server: false  
rhel6cis_ldap_server: false  
rhel6cis_telnet_server: false  
rhel6cis_nfs_server: false  
rhel6cis_rpc_server: false  
rhel6cis_ntalk_server: false  
rhel6cis_rsyncd_server: false  
rhel6cis_tftp_server: false  
rhel6cis_rsh_server: false  
rhel6cis_nis_server: false  
rhel6cis_snmp_server: false  
rhel6cis_squid_server: false  
rhel6cis_smb_server: false  
rhel6cis_dovecot_server: false  
rhel6cis_httpd_server: false  
rhel6cis_vsftpd_server: false  
rhel6cis_named_server: false  
rhel6cis_bind: false  
rhel6cis_vsftpd: false  
rhel6cis_httpd: false  
rhel6cis_dovecot: false  
rhel6cis_samba: false  
rhel6cis_squid: false  
rhel6cis_net_snmp: false

Designate server as a Mail server

rhel6cis_is_mail_server: false

System network parameters (host only OR host and router)

rhel6cis_is_router: false

IPv6 required

rhel6cis_ipv6_required: true

AIDE

rhel6cis_config_aide: true

AIDE cron settings

rhel6cis_aide_cron:
  cron_user: root
  cron_file: /etc/crontab
  aide_job: '/usr/sbin/aide --check'
  aide_minute: 0
  aide_hour: 5
  aide_day: '*'
  aide_month: '*'
  aide_weekday: '*'

SELinux policy

rhel6cis_selinux_pol: targeted

Set to 'true' if X Windows is needed in your environment

rhel6cis_xwindows_required: no

Client application requirements

rhel6cis_openldap_clients_required: false 
rhel6cis_telnet_required: false 
rhel6cis_talk_required: false  
rhel6cis_rsh_required: false 
rhel6cis_ypbind_required: false

Time Synchronization

rhel6cis_time_synchronization: chrony
rhel6cis_time_Synchronization: ntp

rhel6cis_time_synchronization_servers:
    - 0.pool.ntp.org
    - 1.pool.ntp.org
    - 2.pool.ntp.org
    - 3.pool.ntp.org

3.4.2 | PATCH | Ensure /etc/hosts.allow is configured

rhel6cis_host_allow:
  - "10.0.0.0/255.0.0.0"  
  - "172.16.0.0/255.240.0.0"  
  - "192.168.0.0/255.255.0.0"

rhel6cis_firewall: firewalld
rhel6cis_firewall: iptables

Dependencies

Ansible > 2.2

Example Playbook

This sample playbook should be run in a folder that is above the main RHEL6-CIS / RHEL6-CIS-devel folder.

- name: Harden Server
  hosts: servers
  become: yes

  roles:
    - RHEL6-CIS

License

MIT

schubergphilis / rhel6-cis Goto Github PK

rhel6-cis's Introduction