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A home SOC is a learning and monitoring system assembled from tools that collect different kinds of security evidence—not a single product that guarantees professional-grade protection. If your first goal is to monitor a few laptops, a desktop, or a NAS, Wazuh’s all-in-one setup is a practical place to start. Choose Security Onion when you specifically want network alerts, protocol metadata, packet capture, and an integrated investigation workflow—and can provide the hardware and traffic feed it needs.
What a home SOC does
A security operations center (SOC) brings together evidence, detections, and investigation workflows so an analyst can make sense of suspicious activity. At home, “SOC” is best understood as a practical lab framing: you are learning to collect and investigate security data on your own systems. Installing monitoring software does not by itself provide complete visibility or guarantee protection.
The central design choice is where your evidence comes from. Endpoint tools report activity on devices; network tools observe traffic moving across a connection. Each can reveal things the other cannot, so the right starting point depends on what you want to learn and what you can actually monitor.
How Wazuh and Security Onion differ
| Question | Wazuh | Security Onion |
|---|---|---|
| Primary starting point | Endpoint security data and log monitoring | Integrated network and host visibility, detection, and investigation |
| How data is collected | Agents forward endpoint data to the server; devices without an agent can send logs by Syslog or SSH | Network sensors analyze traffic; Elastic Agent and Osquery provide endpoint collection and live queries |
| Investigation capabilities | Server analysis and dashboard alerting and visualization | Alerts, Dashboards, Hunt, Cases, and PCAP interfaces |
| Best first fit | A small lab focused on enrolling and monitoring a few devices | A lab focused on network detections, metadata, packet evidence, and investigation |
Wazuh’s architecture has agents collect and forward endpoint security data to a Wazuh server. The server analyzes that data and forwards it to the indexer, while the dashboard supports alerting and visualization. For a network device that cannot run an agent, logs can be sent through Syslog or SSH. Wazuh describes its all-in-one deployment as appropriate for labs and small environments (Wazuh quickstart documentation).
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- High-Performance Security: Offers up to 1 Gbps IPS throughput and 600 Mbps threat protection throughput, using Fortinet’s purpose-built security processor technology to deliver industry-leading performance and protection for SSL encrypted traffic.
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- Simplified Management and Deployment: Features a user-friendly management console that provides comprehensive network automation and visibility, coupled with Zero Touch Integration with Fortinet’s Security Fabric for easy deployment.
Security Onion combines several roles. Its network layer uses Suricata for signature-based intrusion alerts and full packet capture, and Zeek or Suricata for network metadata. Elastic Agent and Osquery support endpoint collection and live queries, with centralized management through Elastic Fleet. Its interfaces support alert review, searching, case handling, and packet investigation (Security Onion documentation).
What network monitoring adds
Alerts, metadata, and packet evidence are different
Suricata can flag traffic that matches suspicious patterns. That alert is a lead for investigation, not a complete account of what happened. Packet capture can preserve traffic for later examination, while Zeek’s event pipeline analyzes packets, sessions, and files to produce metadata that helps describe communications and their context. Zeek scripts can also encode a site’s security policy and maintain state over time (Zeek documentation, version 8.2.1).
These forms of evidence answer different questions: an alert says that a detection rule matched; metadata can help reconstruct who communicated with whom and how; packet evidence can support closer inspection of captured traffic. Capturing and retaining more evidence also increases storage needs.
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Encrypted traffic makes endpoint data useful
Network-only inspection has limits when traffic is encrypted: a sensor may still observe connections and metadata, but it may not see the content needed to explain activity. Endpoint telemetry from Elastic Agent, Osquery, or a Wazuh agent can add context from the device itself. That does not make endpoint and network coverage interchangeable, and combining platforms adds setup and maintenance work rather than automatically improving every home lab.
Choose a starting point based on your goal
Start with Wazuh for a few devices
Choose Wazuh first if you want to practice agent enrollment, endpoint monitoring, and alert triage while keeping the initial setup to one host. It is a focused way to learn the flow from device data to analysis and dashboards without making live network capture a prerequisite.
Consider Security Onion for network investigation
Choose Security Onion if your learning goal includes network alerts, protocol metadata, packet capture, and a more integrated investigation workflow. Its Evaluation architecture is for quick, temporary testing rather than production use. For live monitoring, the sniffing interface needs a traffic source such as a TAP or a switch SPAN (port-mirroring) feed; installing the software does not automatically expose all household traffic (Security Onion Evaluation architecture).
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Compare the practical constraints
There is no universal winner. Before choosing—or combining the platforms—consider:
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- Whether you can provide a suitable TAP or SPAN feed for a network sensor.
- Available CPU, memory, storage, and network interfaces.
- How much installation and maintenance work you want to take on.
- Whether the goal is learning, temporary evaluation, or ongoing household monitoring.
Plan hardware around the workload
The published figures below are vendor planning guidance, not promises of performance. They describe different workloads and should not be compared as if they were equivalent: Wazuh’s quickstart figures are tied to agent counts and indexed-alert retention, while Security Onion’s requirements include network traffic processing. The reviewed pages do not state publication years.
| Platform and use case | CPU | Memory | Storage or other guidance |
|---|---|---|---|
| Wazuh quickstart, 1–25 agents | 4 vCPU | 8 GiB | 50 GB for 90 days of indexed alerts |
| Wazuh quickstart, 51–100 agents | 8 vCPU | 8 GiB | 200 GB for 90 days of indexed alerts |
| Security Onion VM evaluation | Not stated on the cited hardware page | 12 GB minimum | Evaluation use |
| Security Onion small-network production guidance | Not stated as a general minimum | 16 GB or more recommended | Network workload affects sizing |
Wazuh’s numbers are estimates from its quickstart hardware table; they do not size every integration or workload. Security Onion’s hardware guidance says that a fully saturated monitored 1 Gbps link running both Suricata and Zeek may need at least five workers for each engine—ten CPU cores for those workers alone, before accounting for other services. This is a specific vendor planning example, not a universal benchmark.
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A small lab server or mini PC can be a suitable host category, especially if memory and SSD storage can be upgraded. Select hardware by checking its CPU, memory, storage, network interfaces, and expected traffic load against the relevant deployment guide. Do not assume that a compact machine can sustain a full-speed monitored link merely because it can run an evaluation install.
Build the lab in sensible stages
- Define what you want to observe. List the endpoints you want to monitor and decide whether your first learning goal is endpoint alerting or network investigation.
- Start with the narrower setup. For a few endpoints, begin with Wazuh’s all-in-one lab approach and its current quickstart guidance. Size storage for the retention you intend to keep.
- Add network monitoring only when you can feed it traffic. For Security Onion, plan for a sniffing interface connected to a TAP or SPAN source, and use its Evaluation mode only for temporary testing.
- Learn what each evidence source can tell you. Practice moving from an alert to related endpoint records, network metadata, or packet evidence rather than treating a single alert as a verdict.
- Recheck requirements before expanding. More endpoints, higher traffic, packet capture, and longer retention can change CPU, memory, and storage needs. Follow the current platform documentation for the deployment you intend to run.
What to expect from open-source tools
Security Onion describes itself as “a free and open platform built by defenders for defenders” in its official documentation. Wazuh’s official quickstart says, “Wazuh is free and open source.” These are statements by the projects about their software; they do not mean that setup, hardware, storage, or ongoing maintenance is cost-free.
Quick Recap
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