ansible_ssh_hardening

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ansible-ssh-hardening

Ansible Role Ansible Quality Score Ansible Role

This role performs basic SSH hardening tasks, including:

  • Change the SSH port
  • Disable SSH password authentication
  • Set SELinux settings
  • Allow the new SSH port in firewalld
  • Install and configure fail2ban for SSH

Get this role

ansible-galaxy install --roles-path ./roles/ siw36.ansible_ssh_hardening

Requirements

  • RHEL based OS (RHEL/CentOS/Fedora)
  • Python 3 as default python interpreter
  • The user used on the remote host must have permissions to execute sudo commands without being prompted for password confirmation.

Role Variables

Name Description Default value
sshPort New SSH port 1337
f2bEnabled Enable fail2ban for SSH true
f2bRetries Amount of allowed failed logins before banning 5
f2bBanTime Ban time in seconds 3600
f2bIgnoreIP List of ignored IPs/Subnets 127.0.0.1/32
vmAdmins List of user accounts and public SSH keys that should get access to the machine <none - optional>
allowedInterfaces List of network interfaces on which the SSHD service should be available <none - optional>

Example Playbook

playbook.yml 

- hosts: servers
  become: true
  roles:
     - siw36.ansible_ssh_hardening

vars/main.yml

vmAdmins:
  - user: siw36
    sshKey: ssh-rsa xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx siw36
allowedInterfaces:
  - eth0

License

GNU General Public License v3.0

Author Information

Created by Robin 'siw36' Klussmann (07/2019)

About

Role to perform basic SSH hardening

role hardening security ssh
Install
ansible-galaxy install siw36/ansible-ssh-hardening
GitHub repository
1 stars
0 forks
0 open issues
License
Unknown
Downloads
149
Owner
Robin Klussmann
Platform & DevOps Engineer