Selecting a firewall for a medium-sized company requires more than comparing advertised throughput. The device or service must handle your traffic with the security features you will actually enable. It must also be manageable by the people who support the business. Define sites, users, applications and recovery needs before asking suppliers for a proposal.
Size for the enabled workload
Record internet capacity, peak concurrent use, remote users and important application flows. Ask for performance figures with the proposed inspection and logging features enabled, rather than only basic forwarding. Encrypted traffic inspection can affect performance and introduces deployment, privacy and compatibility considerations. Test a realistic workload. Leave capacity for expected growth, but connect the allowance to evidence rather than an arbitrary premium model.
Evaluate access and branch requirements
List site-to-site links, remote access, guest separation and application-specific controls. Check integration with your identity system and available strong authentication. Verify that rules can express the access model you need. If branches must continue during a central outage, test that scenario. A product can support the right features while still requiring a topology that does not fit your operating needs.
Examine the management burden
Request a demonstration of rule review, log search, configuration backup and rollback. Ask who maintains signatures, certificates and software updates. Compare local management with a hosted console, including how administrators recover access if the console is unavailable. Review retention and export options for logs. A tool is useful only when the team can investigate an event and maintain the configuration consistently.
Include resilience and lifecycle costs
Consider support availability, replacement arrangements, licensing, subscription renewal and the end-of-support lifecycle. If using a high-availability pair, test failover and confirm shared dependencies such as switches and power. Include implementation and migration work in the total cost. Define the acceptance criteria in writing so delivery means verified business connectivity and controls, rather than simply installing an appliance.
Run a representative proof of concept
Test normal browsing, business applications, remote access, an approved blocked-traffic scenario and a planned failure. Review latency, useful logs and administrator effort. Confirm that the required rules survive updates or recovery. Document limitations before purchase and assign an owner for ongoing reviews. Firewall selection succeeds when the complete operating arrangement fits, including support and recovery.
Frequently asked question
Which throughput number should we compare?
Compare measured performance for your intended feature set and traffic pattern. Basic maximum throughput alone may not represent inspected business traffic.
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