CWWK Firewall Mini PC Guide: 4-Port, 6-Port, 8-Port, 2.5GbE and 10GbE
Quick Answer
For most home networks, a 4-port 2.5GbE firewall mini PC is a practical starting point. A 6-port model makes more sense when you need dual WAN, additional physical network zones, or a more complex home lab. An 8-port system is useful when you want more physical separation between office devices, cameras, servers, IoT devices, and management networks.
You should consider 10GbE when your network already includes—or is being upgraded to—a 10GbE switch, NAS, server, or high-speed backbone.
CPU requirements depend on the workload. Basic routing and firewall rules are relatively light, while VPN, IDS/IPS, traffic inspection, and virtualization require more processing headroom.
The right choice starts with four questions:
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How fast is your network?
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How many physical Ethernet ports do you actually need?
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What firewall services will you run?
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Will the firewall run directly on the hardware or inside a virtual machine?
1. How to Choose a Firewall Mini PC
From a hardware-selection perspective, we recommend starting with four factors.
| Factor | What You Need to Consider |
|---|---|
| CPU | VPN, IDS/IPS, virtualization and additional services |
| Ethernet Ports | Number of physical network zones |
| Network Speed | 2.5GbE or 10GbE |
| RAM | Dedicated firewall or multiple services/VMs |
2. 4-Port vs 6-Port vs 8-Port Firewall Mini PC
VLANs and managed switches can divide one physical connection into multiple logical networks, so the correct number of ports depends on how much physical separation you actually need.
Quick Comparison
| Port Count | Best Fit |
|---|---|
| 4-Port | Home networks and basic firewall deployments |
| 6-Port | Dual WAN, home labs and multiple network zones |
| 8-Port | Offices and networks requiring more physical separation |
Related Guide: 4-Port vs 6-Port vs 8-Port Firewall Appliance
3. 2.5GbE vs 10GbE: Which One Do You Need?
Network speed should be considered across the entire network, not just the firewall.
Installing a 10GbE firewall does not make a network faster if the modem, switch, NAS, server, and client devices are still limited to 1GbE or 2.5GbE.
Quick Comparison
| Network Environment | Better Direction |
|---|---|
| 1Gbps Internet | 2.5GbE |
| 2.5Gbps Internet | 2.5GbE |
| Typical Home Network | 2.5GbE |
| Home Lab | 2.5GbE or 10GbE depending on workload |
| Small Office | 2.5GbE or mixed network |
| 10GbE NAS | 10GbE |
| 10GbE Core Switch | 10GbE |
| High-Speed Server Network | 10GbE |
Do not choose 10GbE only because the number is higher. Choose it when the rest of the network can actually use it.
Related Guide: 2.5GbE vs 10GbE Firewall: Which One Do You Need?
4. Which CPU Does a Firewall Mini PC Need?
Basic firewall workloads are not very CPU-intensive.
For NAT, basic firewall rules, DHCP, DNS, VLANs, and standard OPNsense or pfSense routing, a low-power Intel N-series processor is usually sufficient.
The situation changes when the firewall begins processing more complex workloads.
CPU demand increases with:
- VPN encryption
- IDS/IPS
- Traffic inspection
- Multiple network services
- Heavy monitoring
- Virtualization
- Proxmox
- Multiple virtual machines
This is why we do not recommend choosing a firewall CPU simply by looking at internet speed.
A 1Gbps network running basic firewall rules and a 1Gbps network running VPN, IDS/IPS, and several additional services can require very different levels of processing power.
A simple selection framework looks like this:
| Workload | CPU Direction |
|---|---|
| Basic Routing | N100 / N150 class |
| Standard OPNsense / pfSense | N100 / N150 class |
| VPN + Multiple Services | More CPU headroom preferred |
| IDS/IPS | N305 or higher-performance platform |
| Proxmox Firewall | N305 or higher-performance platform |
| Multiple VMs / Services | Higher-performance platform |
For a broader comparison of these processors, see:
CWWK N100 vs N150 vs N305 vs N355
We will also cover the firewall-specific differences separately in:
N100 vs N305 for Firewall
5. OPNsense, pfSense, or Proxmox?
Hardware selection also depends on how you plan to run the firewall.
Dedicated OPNsense or pfSense
If the mini PC will only act as a firewall, installing OPNsense or pfSense directly on the hardware keeps the system relatively simple.
In this case, focus on:
- WAN speed
- Ethernet port count
- VPN workload
- VLANs
- IDS/IPS
- CPU performance
- Memory requirements
One point worth emphasizing is that minimum hardware requirements are not the same as recommended hardware for your workload.
Minimum requirements answer:
Can the operating system run?
They do not answer:
Can this hardware handle my VPN, network speed, IDS/IPS, and additional services?
We will cover this in more detail in our OPNsense Hardware Requirements guide.
Proxmox + Firewall VM
Some users prefer to run their firewall inside Proxmox.
For example, one mini PC may host:
- Proxmox
- An OPNsense VM
- DNS services
- Monitoring tools
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Other lightweight virtual machines
This can make good use of hardware in a home lab, but it also changes the way you should size the system.
CPU, RAM, and storage now need to support the entire virtualization host, not only the firewall VM.
You should also consider failure isolation.
If the Proxmox host goes down, the firewall and any other services running on the same machine may go down with it.
For a lab, that tradeoff may be acceptable. For an important home or office network, a dedicated firewall can be easier to maintain and troubleshoot.
We will examine this separately in:
Bare Metal vs Virtualized Firewall: Which Is Better?
6. Which CWWK Firewall Mini PC Should You Choose?
Instead of starting with a model number, we recommend narrowing the options in four steps.
Step 1: Check Your Internet and Network Speed
Start by identifying your internet speed: 1Gbps, 2.5Gbps, above 2.5Gbps, or 10GbE/fiber. This determines the minimum useful network interface speed.
Step 2: Count the Physical Networks
Write down what you actually need to connect:
- WAN
- LAN
- Backup WAN
- Guest network
- IoT
- Cameras
- NAS
- Server
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Management network
Then ask which of these really need dedicated physical ports and which can be handled through VLANs.
This prevents buying six or eight ports simply because they are available.
Step 3: Define the Workload
Will the system only run firewall services?
Or will it also handle:
- VPN
- IDS/IPS
- Network monitoring
- Proxmox
- Virtual machines
- Other network services
This is where CPU and memory requirements begin to change.
Step 4: Match the Hardware Class
| Network Requirement | Hardware Direction |
|---|---|
| Basic Home Firewall | 4-Port 2.5GbE |
| OPNsense / pfSense | 4-Port or 6-Port 2.5GbE |
| Dual WAN | 6-Port |
| Home Lab | 4-Port or 6-Port |
| Multiple Physical Networks | 6-Port or 8-Port |
| Small Office | 6-Port or 8-Port |
| 10GbE NAS / Switch | 10GbE SFP+ |
| Proxmox / Heavy VPN | More CPU headroom |
CWWK firewall mini PCs cover different combinations of multi-port 2.5GbE, 10GbE connectivity, low-power processors, and higher-performance platforms.
The goal is not to recommend the largest configuration to everyone.
It is to narrow the hardware down to what the network actually needs.
Explore CWWK Firewall Mini PCs →
7. Frequently Asked Questions
Is a 4-port firewall mini PC enough for home use?
For many home networks, yes.
A 4-port system can handle WAN, LAN, and additional physical networks, while a managed switch and VLANs can provide further segmentation.
Users who need dual WAN plus several dedicated networks may prefer six ports.
Should I choose 2.5GbE or 10GbE?
Choose 2.5GbE for most home networks, multi-gig internet connections, access points, and small-office deployments.
Consider 10GbE when you already have—or plan to deploy—a 10GbE NAS, switch, server, or high-speed network backbone.
Is Intel N100 enough for OPNsense?
N100 can be suitable for basic routing, firewall rules, VLANs, and relatively light network services.
If you expect heavier VPN usage, IDS/IPS, virtualization, or multiple services, additional CPU headroom can be worthwhile.
Can CWWK Mini PCs run pfSense?
Yes. CWWK multi-LAN mini PCs can be used for pfSense deployments.
The important part is choosing the correct CPU, Ethernet configuration, memory, and network speed for the workload rather than selecting hardware only from the software's minimum requirements.
Can I run Proxmox and OPNsense on the same mini PC?
Yes. OPNsense can run inside a virtual machine on a Proxmox host.
However, CPU, RAM, storage, network interface assignment, and failure isolation should all be planned for the entire host.
For home labs, this can be an efficient setup. For networks where firewall availability is more important, a dedicated firewall may be simpler.
Choose the Firewall Mini PC That Fits Your Network
The best firewall mini PC is not necessarily the one with the fastest processor, the most Ethernet ports, or the highest network speed.
For most buyers, the decision becomes much easier after answering three questions:
How many physical Ethernet ports do I need?
Is my network 2.5GbE or 10GbE?
Am I running only a firewall, or also VPN, IDS/IPS, Proxmox, or other services?
For a typical home network, a 4-port 2.5GbE system is often a sensible starting point.
Move to six ports when dual WAN, home-lab equipment, or additional physical networks make those interfaces useful. Choose eight ports when physical network separation is an important part of the design.
Move to 10GbE when the rest of the infrastructure—such as your NAS, switch, or server—can take advantage of it.
The same principle applies to CPU performance:
Buy enough headroom for the workload, not specifications you are unlikely to use.
That approach usually produces a cleaner network, a more appropriate hardware configuration, and a firewall platform that is easier to expand later.