Just having the internet “working” in the office is not the job of a firewall. In a business environment, its real purpose is to stop unauthorized access, avoid becoming a network bottleneck, and prevent issues when a company adds more employees, branches, or cloud services. That is why the criteria for choosing a business firewall should not be determined solely by price or the number of ports.
Most companies purchase a firewall when a specific pain point already exists—frequent outages, poor VPN quality, secure access for remote employees, or audit requirements. However, the right approach should be infrastructurally planned, not reactive. A firewall is not just a network device; it is a part of business risk management.
Criteria for Choosing a Business Firewall in Practice
If you are choosing a device for an office of 10-20 people, the requirements will be one thing. If you need to control multiple locations, VPN tunnels, server segmentation, and guest Wi-Fi, you will need an entirely different class of platform. Therefore, the evaluation should start not with the model, but with the actual load of your network.
The first issue is throughput. The throughput specified in the manufacturer’s brochure is often measured under ideal conditions—all security features are turned off, there is no deep packet inspection, and IPS or application control is not running. In a real-world environment, this number drops significantly. If your office has a 500 Mbps or 1 Gbps internet connection, but the firewall handles only 200-300 Mbps in full security mode, you are creating a bottleneck yourself.
Therefore, you need to look at several separate indicators: firewall throughput, threat protection throughput, IPS throughput, and VPN throughput. It is precisely this difference that shows what the device can do in operation, not in a laboratory. For a small business, a device that operates with basic filtering is sometimes sufficient. But if the company actively uses Microsoft 365, cloud backup, IP telephony, and constant video calls, a low-performance firewall becomes a daily disruption.
Real Number of Users and Sessions
When selecting a firewall, the number of employees is only a starting indicator. More important is the number of concurrent sessions, the variety of devices, and the type of traffic. Today, 50 employees no longer mean 50 endpoints. In most cases, one person has a laptop, a mobile phone, sometimes an IP phone, and an additional Wi-Fi connection.
If the network includes CCTV, printers, NAS, an ERP system, and a guest segment, the firewall has to handle far more connections and policies. This is where the difference between entry-level and business-class devices becomes apparent. A lower-class model might work in a small office but quickly reach its session limit or CPU utilization capacity.
Security Features — What is Essential and What is Redundant
Not every company needs the same functionality. However, several capabilities are already basic today. These include stateful inspection, site-to-site and remote access VPN, VLAN support, basic intrusion prevention, and centralized policy management. If these elements are missing, the device resembles an enhanced version of a router rather than a fully-fledged business firewall.
Next come next-generation features—application control, web filtering, malware inspection, SSL inspection, and sandboxing. The right balance is crucial here. Enabling all features does not automatically mean better protection. In some environments, SSL inspection is essential, especially when the company needs deep traffic control. However, you must consider that this increases the load, requires proper certificate management, and sometimes causes compatibility issues with certain applications.
If the business operates in a regulated sector—finance, healthcare, government contracts—an audit trail, detailed logging, and role-based administration become critical. For a small office, an overly complex platform often turns out to be a poor decision, because a feature you cannot manage does not actually increase security.
VPN Capabilities Are Often Decisive
Many Georgian companies connect multiple offices, warehouses, or remote employees. In such an environment, a VPN is no longer an optional feature—it is an operational requirement. Therefore, the firewall must be capable of not only creating site-to-site tunnels but also providing stable remote access, user authentication, and sufficient VPN throughput.
A common mistake is choosing a device solely with the expectation that “we will have a few VPN users.” Later, remote access becomes necessary for accounting, sales, external contractors, and IT personnel simultaneously. If the device’s license, CPU resources, or concurrent tunnel capacity is limited, the problem quickly surfaces.
Manageability and Administration
A good firewall is not judged by protection alone. It must be managed predictably and transparently. If changing rules is difficult, finding logs takes a lot of time, the firmware update process is inconvenient, or restoring a configuration backup is complicated, administration costs increase.
Therefore, the interface, policy management, and quality of monitoring are just as important as throughput. It is preferable for an IT manager to quickly see which application is consuming the bandwidth, where traffic is being blocked, and which endpoint is behaving suspiciously. For non-technical organizations, it is important that a support partner can easily take over management and diagnostics.
This also includes centralized management. If you have several branches, managing each device individually becomes inefficient over time. A central console, template-based policies, and unified logging significantly simplify operations.
Licensing, Support, and Total Cost of Ownership
When purchasing a firewall, the initial price rarely reflects the total expense. Many platforms have separate licenses for threat intelligence, IPS, web filtering, endpoint integration, or cloud management. If you do not clarify this from the beginning, an inexpensive device can turn out to be a much more expensive choice in a few months.
That is why three questions should be asked during the procurement stage: what is included in the base package, which features require an annual renewal, and what happens after the license expires. On some devices, basic routing/firewall operations continue, but security services are disabled. In other cases, cloud management or signature updates stop, which directly impacts security.
The level of support is also important. For business, firmware updates, the RMA process, vendor support SLA, and the competence of the local integrator are factors equal to price. In an infrastructure, a device is valued when there is a problem, not just when you take it out of the box.
Scalability and Future Compatibility
A firewall is typically a 3-5 year investment. During this period, a company may add a new office, IP cameras, an ERP, Wi-Fi 6 infrastructure, cloud workloads, or a hybrid work model. If the device is selected precisely for today’s load, it will soon become a limitation.
Therefore, a certain resource margin is desirable. This does not mean buying an overly expensive platform. It means evaluating a realistic growth scenario—for example, moving from 30 to 70 users, doubling internet speed, or the emergence of additional VPN connections. The right choice is one that meets current demands and accommodates medium-term growth.
Hardware Reliability and Network Architecture
Sometimes, so much attention shifts to software features that hardware factors are forgotten. In a business environment, the type of power supply, port speeds, SFP/SFP+ support, rackmount form factor, failover capability, and high availability mode are important. If the network is critical, the failure of a single device should not mean shutting down the entire office.
HA is not always necessary for SMEs. However, where ERP, IP telephony, or constant connectivity between branches is active, an active/passive cluster or at least a quick replacement plan significantly reduces business risk.
How to Reach the Right Choice
The criteria for choosing a business firewall ultimately come down to four questions: how much traffic must the device handle in real mode, what security policy does your company need, how easy will it be to manage, and what will its full life cycle cost you. If you replace this analysis based on price alone, there is a high chance that in a few months you will need to either compromise on features or make a new purchase.
A practical approach is to inventory the existing network, map users and services, and then compare 2-3 suitable classes of devices using real scenarios. In such cases, it is not just the datasheet that matters, but the deployment plan, support model, and integration with the rest of the infrastructure. It is at this level that it becomes clear: a firewall is not a separate box on a shelf—it is a part of your business’s availability, control, and risk management.
If you are making the choice today, try to buy not the “strongest” or the cheapest device, but the one that forces your network into the fewest compromises tomorrow.