What free SIEM systems exist?

Question

Journaling

Tell me what open source projects are that allow you to analyze logs from many sources.

Answer 1

Of the free ones, I would single out OSSIM (the developer of AlienVault), it also includes scanning and intrusion detection, etc. (more than 20 instruments can be connected).
There is an interesting article on habré habrahabr.ru/post/255433/.
But you have to tinker with setting it up, they have a paid version of AlienVault Unified Security Management (USM), which is much easier to install and configure and has support. One of the cheapest systems on the market for the price. You can download a test for 30 days.