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Apa itu ansible? ​

Ansible adalah alat otomatisasi sumber terbuka (open-source) yang sangat populer untuk konfigurasi manajemen, deployment aplikasi, dan orkestrasi tugas IT lainnya. Intinya, Ansible membantu Anda mengotomatiskan tugas-tugas berulang di banyak server secara efisien dan konsisten.

Instalasi ​

Instalasi ansible di ubuntu

sh
sudo apt update
sh
sudo apt install software-properties-common
sh
sudo add-apt-repository --yes --update ppa:ansible/ansible
sh
sudo apt install ansible

untuk lebih detail bisa cek di https://docs.ansible.com/ansible/latest/installation_guide/installation_distros.html#installing-ansible-on-ubuntu Instalasi ansible di arch linux

sh
sudo pacman -S ansible-core

Audit UFW ​

check rule iptables

sh
sudo iptables -L -n

code:

yaml
---
- name: "Configuring UFW/Iptables"
  hosts: localhost
  connection: local
  tasks:
    - name: "Enable rsyslog service"
      service:
        name: rsyslog
        state: started
        enabled: yes
      become: yes
      become_method: sudo
    - name: "Configure UFW/Iptables"
      ufw:
        state: enabled
        policy: allow
      become: yes
      become_method: sudo
    - name: "Log SYN packets in INPUT Chain"
      lineinfile:
        path: /etc/ufw/after.rules
        line: "-A ufw-after-input -p tcp --syn -j LOG --log-prefix \"[UFW-SYN-LOG]\""
        insertbefore: "# don't delete the 'COMMIT' line or these rules won't be processed"
      become: yes
      become_method: sudo

restart ufw

sh
sudo systemctl restart ufw

test rule iptables pada server jalankan:

sh
nc -lvnp 9001

remote server jalankan:

sh
nc <ip-server> 9001

check log pada server

sh
sudo cat /var/log/syslog | grep -i SYN

AuditD ​

code:

yaml
- name: "Download file AuditD and configure AuditD"
  hosts: localhost
  tasks:
    - name: "Install AuditD"
      apt:
        name: auditd
        state: present
      become: yes
      become_method: sudo
    - name: "Download file auditd.yml from github"
      get_url:
        url: "https://raw.githubusercontent.com/Neo23x0/auditd/master/audit.rules"
        dest: "backup/auditd.rules"
    - name: "Configure AuditD rules"
      copy:
        src: "backup/auditd.rules"
        dest: "/etc/audit/rules.d/audit.rules"
        owner: root
        group: root
        mode: 0640
      become: yes
      become_method: sudo

restart auditd

sh
sudo pkill -HUP auditd

check log

sh
sudo tail -f /var/log/audit/audit.log

check report

sh
aureport
sh
ausearch -m USER_AUTH

Explorer ​

install sshpass

sh
sudo pacman -S sshpass

copy file ansible ke direktori yang diinginkan

sh
cp -rf /etc/ansible/ ~/Documents/ansible/ansible-docker

edit file ansible.cfg, rubah seperti berikut:

hosts_key_checking=false

disable password authentication

sh
sudo vim /etc/sudoers

edit seperti berikut

docker ALL=(ALL) NOPASSWD: ALL

Menjalankan Ansible Playbook ​

sh
ansible-playbook -i hosts playbook.yml

Terima Kasih ​