Best IT MSP · Buyer's Guide

Managed Firewall Services: What They Are and Why They Matter

Managed firewall services hand the configuration, monitoring, and maintenance of your firewalls to a specialist provider. They keep rules current, watch traffic 24/7, block and detect threats, and maintain compliance, closing the misconfiguration gaps that cause many breaches. It is a core layer of network security for businesses without a dedicated firewall team.

Reviewed by the Best IT MSP research team · Updated 2026-06-18

What are managed firewall services?

Managed firewall services are when a third-party provider configures, monitors, and maintains your firewalls on your behalf. That covers setting and updating firewall rules, applying firmware updates, watching network traffic around the clock, detecting and blocking threats, and keeping the configuration compliant. It is a foundational layer of network security and broader cybersecurity.

Firewalls still matter because they are the first line of network defense against attacks that keep climbing, with reported cybercrime losses topping $16 billion in a year^[3]. Most failures are not the firewall itself but how it is run: misconfiguration is a leading cause of breaches, and the average breach costs $4.88 million^[1]. A managed service removes that risk by putting experts in charge.

Best IT MSP does not sell firewalls. We are an independent directory that vets and merit-ranks providers. This guide explains what to buy, then helps you shortlist verified firms.

What managed firewall services include

Configuration and rule management. Setting, updating, and tuning firewall rules and policies.
24/7 monitoring. Watching traffic for threats and anomalies around the clock.
Threat detection and response. Blocking known threats and flagging suspicious behavior.
Patching and updates. Keeping firmware and signatures current.
Auditing and compliance reporting. Regular review and evidence for PCI DSS, HIPAA, and similar.
Threat intelligence feeds. Current data on emerging attacks.

The hidden cost of DIY firewalls

Running firewalls in-house looks cheaper until you account for the failures that come with it: rules that are never audited, misunderstood configurations that leave gaps, multiple firewalls that go unmonitored, and convenience shortcuts that weaken security. These misconfigurations, not the hardware, are where breaches happen. A managed service applies constant vigilance and expertise that an overstretched internal team rarely can.

Compliance and modern architecture

Firewalls are required or expected by PCI DSS, HIPAA, and GDPR, and a managed provider keeps your configuration audit-ready. Managed firewalls are also foundational to modern architectures like SASE (secure access service edge), which combine network and security for today's distributed, remote-friendly workforce.

How to choose a managed firewall provider

Do they provide genuine 24/7 monitoring and response, not just setup?
Do they include threat intelligence feeds and regular rule auditing?
Do they deliver compliance reporting for your framework?
Are their staff certified, and is the provider itself compliant?
Do they integrate the firewall with your broader security and network?

Shortlist three, ask each the same questions, and compare. To start from a vetted, merit-ranked list, browse providers by city in the Best IT MSP directory.

Frequently asked questions

What is a managed firewall?

A managed firewall is a service where a provider (often a managed security service provider) handles the operation, administration, monitoring, and maintenance of your firewall infrastructure. They set and update rules, monitor traffic 24/7, detect and block threats, and keep the configuration compliant, so you do not need a dedicated in-house firewall team.

What do managed firewall services include?

They include firewall configuration and rule management, 24/7 monitoring, threat detection and response, firmware patching, auditing, compliance reporting, and threat intelligence feeds. The goal is to keep the firewall correctly configured and actively watched, which is where most security value lies.

Do I need a managed firewall?

If you lack the in-house resources to configure, monitor, and audit your firewall continuously, then yes. Misconfiguration is a leading cause of breaches, and an unmonitored or poorly maintained firewall provides a false sense of security. A managed service closes those gaps with expert, around-the-clock oversight.

Are firewalls required for compliance?

Yes. Firewalls are required or expected by major frameworks including PCI DSS, HIPAA, and GDPR. A managed firewall provider keeps your configuration audit-ready and produces the compliance reporting these standards require, reducing the risk of failing an assessment.

What is the difference between a firewall and a managed firewall?

A firewall is the device or software that filters network traffic. A managed firewall is the ongoing service of expertly configuring, monitoring, patching, and auditing that firewall. Owning a firewall is not enough; most breaches stem from how it is run, which is exactly what the managed service addresses.

How does a managed firewall fit into SASE and zero trust?

Managed firewall services are foundational to SASE (secure access service edge), which combines network and security functions for distributed workforces, and they support zero-trust principles by enforcing strict, monitored access policies. A good provider integrates the firewall into this broader architecture rather than treating it in isolation.

Sources

IBM, Cost of a Data Breach Report 2024. https://www.ibm.com/reports/data-breach
Verizon, 2024 Data Breach Investigations Report (DBIR). https://www.verizon.com/business/resources/reports/dbir/
FBI Internet Crime Complaint Center (IC3), Annual Internet Crime Report. https://www.fbi.gov/news/press-releases/fbi-releases-annual-internet-crime-report