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Ansible OSSEC Agent Role

Circle CI

This roles setup a OSSEC Agent

Requirements

This role is only tested on Ubuntu trusty. You need to have a OSSEC server running. The server needs to be running before the client because the client needs to get the credentials from the server, otherwise it won't be able to talk to the server until the next restart.

Role Variables

The role uses the Ubuntu package defaults. The below all the options with their defaults as examples, but list items are truncated. Please view defaults/main.yml for a full list.

Server

ossec_server: 127.0.0.1

Rules

ossec_rules:
  - rules_config.xml

Syscheck

ossec_syscheck_frequency: 7200
ossec_syscheck_directories:
  - check_all: yes
    directories: /etc,/usr/bin,/usr/sbin
ossec_syscheck_ignore_directories:
  - /etc/mtab

Rootcheck

ossec_rootcheck_rootkit_files: /var/ossec/etc/shared/rootkit_files.txt
ossec_rootcheck_rootkit_rojans: /var/ossec/etc/shared/rootkit_trojans.txt

Global whitelist

ossec_global_white_lists:
  - 127.0.0.1

Remote

ossec_remote_connection: secure
ossec_remote_port: 1514
ossec_remote_protocol: udp
ossec_remote_local_ip: 0.0.0.0

Alerts

ossec_alerts_log_alert_level: 1
ossec_alerts_email_alert_level: 7

Commands

ossec_commands:
  - name: host-deny
    executable: host-deny.sh
    expect: srcip
    timeout_allowed: yes

Active Responses

ossec_active_responses:
  - command: host-deny
    location: local
    level: 6
    timeout: 600

Localfile

ossec_localfile:
  - log_format: syslog
    location: /var/log/messages

Example Playbook

- hosts: agents
  vars:
    ossec_server: 10.13.123.123
  roles:
     - verygood.ossec-agent

License

BSD