Comparisons anchored on Wazuh, the GPL-2.0 XDR and SIEM platform: against Elastic Security, its OSSEC ancestor, Security Onion, Graylog and plain OpenSearch.
Wazuh against Elastic Security as a self-hosted SIEM and endpoint platform: GPL-2.0 and Apache-2.0 against the Elastic License, which detection, endpoint and SSO features sit in paid Elastic tiers, agent coverage and who each suits.
Wazuh against OSSEC, the HIDS it forked in 2015: what Wazuh added (indexer, dashboard, vulnerability detection, compliance views), what OSSEC and Atomic OSSEC still offer, and when staying on OSSEC makes sense.
Host-based Wazuh against network-focused Security Onion: endpoint agents against Suricata, Zeek and packet capture, GPL against the non-OSI Elastic License 2.0, hardware needs, and when teams run both.
Wazuh as an agent-based SIEM against Graylog as a log management platform: built-in rules and compliance views against streams and pipelines, GPL against SSPL (not OSI open source), and which features need paid Graylog editions.
Whether to deploy Wazuh, whose indexer is an OpenSearch fork, or build on OpenSearch with its Sigma-based Security Analytics: agents and ruleset included against assembling collection and detections yourself.
The common open source SIEM shortlist side by side: endpoint detection (Wazuh), network security monitoring (Security Onion) and log management (Graylog), with licenses, paid editions, hardware and staffing for each.
Cost of ownership for Wazuh against self-managed Elastic Security: no license fee against Elastic subscription tiers (Platinum closed to new buyers), plus storage, cluster nodes, rule tuning and support staff.
What moving an OSSEC estate to Wazuh involves: agent compatibility with the Wazuh server, running mixed agents during cutover, carrying over custom rules and decoders, and adding the indexer and dashboard.
Whether to run Wazuh as one all-in-one host or as a distributed deployment with a multi-node indexer cluster and a master and worker server cluster: the endpoint counts the Wazuh quickstart sizes for, storage per device type, what a load balancer and extra nodes add, and when high availability justifies the extra hosts.
Which documented way to install Wazuh fits a team: Linux packages with the installation assistant or step-by-step guide, the official Docker single-node and multi-node stacks, or the Kubernetes manifests from the Wazuh Kubernetes repository. Covers what each deploys, host requirements, offline installs and who has to run the platform underneath.
Wazuh Cloud against a self-hosted Wazuh deployment: published tier prices by agent count and retention, the nine hosting regions, dashboard-only access with read-only APIs on the managed service, and the archive download path for moving data back on premises.
Host-based XDR and SIEM against a network IDS/IPS engine: what Wazuh agents see on endpoints versus what Suricata sees on the wire, why the two are often deployed together through Wazuh's documented Suricata integration, and when one is enough.
A full SIEM with rules, alerting and a dashboard against an SQL endpoint query framework with no central server of its own: where osquery fits inside Wazuh through the Wazuh osquery module, and when a fleet manager plus osquery is the lighter choice.
The three self-hosted SIEM shortlists compared on license (GPL-2.0, Elastic License 2.0 tiers, ELv2), endpoint versus network coverage, the search backend each depends on, and what is paid.
Wazuh's agent-based host monitoring and Docker monitoring against Falco's eBPF runtime detection on hosts, containers and Kubernetes: what each sees, why Wazuh documents running them together with Falco events read by the Wazuh agent, and when one is enough.
Endpoint protection only: Wazuh file integrity monitoring, malware detection, active response and vulnerability detection against Elastic Defend malware and ransomware prevention and host isolation, which Elastic lists under its Enterprise tier. What each blocks versus alerts on.
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