• OSSEC — Википедия

• www.lissyara.su - статья об OSSEC
• Managing Agents
• Syscheck: FAQ - How to force an immediate syscheck scan?

• OSSEC Downloads

# wget -q -O - https://updates.atomicorp.com/installers/atomic | bash

# apt install apt-transport-https

# apt update

# apt install ossec-hids-server

# /var/ossec/bin/ossec-control start


# ss -panu | grep 1514

Похоже, нельзя ставить вместе с сервером.

ossecagent# apt install ossec-hids-agent

ossec-agent# vim /var/ossec/etc/ossec.conf

<ossec_config>
  <client>
    <server-ip>192.168.155.10</server-ip>
...

ossec-server# /var/ossec/bin/manage_agents
...
ossec-agent# /var/ossec/bin/manage_agents
...

ossec-agent# /var/ossec/bin/ossec-control start

ossec-server# /var/ossec/bin/agent_control -l
...

ossec-server# /var/ossec/bin/agent_control -i 001
...

https://ossec-docs.readthedocs.io/en/latest/programs/ossec-reportd.html

# cat /var/ossec/logs/alerts/alerts.log | /var/ossec/bin/ossec-reportd -f level 1