MANAGED FIREWALL SERVICES
Keep Firewall Policy Aligned With the Network It Protects
Firewall rules determine which systems can communicate and which connections should be refused. Digisecuritas helps you maintain that control through structured policy management, configuration oversight, monitoring and regular review.
Independent support for on-premises, cloud and hybrid firewall environments.
POLICY DECISION PATH
Permitted traffic
Refused connection
CONTROLLED NETWORK ACCESS
What are managed firewall services?
Managed firewall services provide ongoing administration, monitoring and security oversight for an organisation's firewall environment. The service can include policy management, rule review, configuration control, platform health monitoring, log oversight and coordination when firewall events require action.
Digisecuritas works with the organisation's existing infrastructure and approved firewall technologies. Scope, service hours and operational responsibilities are agreed before the service begins.
"Firewall policy should reflect the network it protects, not the network that existed when the rules were first written."
Controlled access
Maintain rules that reflect approved business and technical requirements.
Clearer visibility
Improve oversight of firewall coverage, configuration status and material events.
Accountable changes
Use a defined process to request, assess, approve and document firewall changes.
Ongoing improvement
Identify obsolete rules, configuration drift and opportunities to strengthen segmentation.
Every Connection Should Have a Defined Reason
A firewall policy should express an approved access requirement. Digisecuritas uses a structured decision path to help prevent vague, overly broad or undocumented rules from becoming permanent.
Identify the request
Capture the source, destination, service, port, direction and intended business purpose.
What needs to communicate?
Confirm ownership
Identify the system owner, requesting team and person accountable for approving the access.
Who owns the requirement and the associated risk?
Evaluate exposure
Consider trust zones, internet exposure, data sensitivity, dependencies and existing security controls.
What additional access or attack path would this create?
Define the narrowest rule
Limit the rule to the traffic required for the approved purpose.
Can the scope, duration or permitted service be reduced?
Approve and implement
Record the approval, implement the change and validate that the outcome matches the request.
Was the change applied correctly?
Review or remove
Reassess temporary, unused, duplicate and ageing rules according to the agreed review schedule.
Does the business requirement still exist?
Firewall Management Across a Distributed Environment
Internet and perimeter firewalls
Manage policies protecting internet-facing services, external connectivity and defined network boundaries.
Internal segmentation firewalls
Control communication between business networks, user zones, data environments and higher-risk systems.
Cloud firewalls
Support approved cloud-native or virtual firewall controls across defined cloud accounts, networks and workloads.
Branch and remote connectivity
Review firewall and secure connectivity controls used across branches, remote sites and authorised remote-access services.
Environment considerations
- Single-vendor and supported multi-vendor environments
- Physical, virtual and cloud firewall platforms
- Data centres and colocation environments
- Hybrid and multi-cloud infrastructure
- IT and appropriately scoped operational technology networks
- Virtual private network controls where included
- Integration with monitoring, identity and ticketing systems
- Regional logging and data-handling requirements
Platform support and administrative responsibilities must be confirmed during discovery.
Core Firewall Management Capabilities
Firewall assessment and onboarding
Document the firewall estate, management interfaces, versions, policies, integrations, ownership and known operational issues.
Discuss this capability →Policy and rule management
Create, update and remove rules through an agreed request, review, approval and validation process.
Discuss this capability →Rule-base review
Identify unused, duplicate, overly permissive, shadowed, temporary and poorly documented rules.
Discuss this capability →Configuration and platform oversight
Review relevant administrative settings, management access, backups, software status, logging and high-availability configurations.
Discuss this capability →Event and log monitoring
Review agreed firewall logs and alerts, then escalate activity that requires investigation or operational action.
Discuss this capability →Segmentation improvement
Assess traffic boundaries and recommend changes that reduce unnecessary communication between systems and security zones.
Discuss this capability →Exact capabilities depend on platform support, licensed features, access permissions, service hours and the agreed operating model.
A Managed Service With Defined Responsibilities
Discover and baseline
Document firewalls, protected networks, rule sets, platform versions, management access and existing operating procedures.
Establish governance
Agree change authority, approval routes, emergency procedures, service measures, escalation paths and review schedules.
Operate and monitor
Process authorised changes, review platform status and investigate relevant firewall events within the agreed scope.
Report and improve
Provide service reporting, track unresolved actions and recommend policy, configuration or architecture improvements.
Digisecuritas complements the client's network, infrastructure and security teams. Business ownership and risk-acceptance authority remain with the client.
Firewall Changes Need Context, Approval and Evidence
Change workflow
Emergency changes
Urgent firewall changes may require an accelerated route, but they still need an identified owner, documented purpose and post-change review.
Emergency-change requirements
- Named requester
- Reason for urgency
- Defined scope
- Authorised approver
- Implementation record
- Validation result
- Follow-up review
- Removal date where temporary
Firewall Information That Supports Action
Typical deliverables
- Firewall estate and coverage record
- Policy and configuration observations
- Rule-change register
- Rule-review findings
- Unused and duplicate rule records
- Temporary-rule and expiry tracking
- Administrative-access observations
- Platform and protection-health summary
- Firewall event and escalation summary
- Outstanding remediation actions
- Segmentation recommendations
- Service-performance report
- Executive risk summary
- Periodic improvement recommendations
What leadership sees
A concise view of material firewall risks, overdue actions, policy trends and decisions that require management attention.
Executive summary includes
- Material firewall risks
- Overdue remediation actions
- Policy change trends
- Management decisions required
Firewall Oversight Without OEM Bias
Digisecuritas approaches firewall management as a security-governance responsibility. The objective is to maintain appropriate access, reliable evidence and clear accountability across the environment.
- Cybersecurity-only focus
- Technology-agnostic service model
- Independent policy and configuration review
- Structured change governance
- Business and technical reporting
- Multi-region delivery capability
- Access to wider cloud, identity, monitoring and incident-response expertise
Related services
Managed SOC
Extend firewall logs and network events into broader security monitoring.
Managed Detection and Response
Correlate firewall activity with endpoint, identity and cloud telemetry.
Network Security
Review network architecture, segmentation and protective controls.
Cloud Security
Assess firewall policies and traffic controls across cloud environments.
Incident Response
Support investigation, containment and recovery when network activity indicates a material incident.
Managed Firewall Services FAQs
A managed firewall service provides ongoing administration and security oversight for defined firewall platforms. It may include policy changes, rule review, configuration monitoring, event handling, reporting and improvement recommendations.
A firewall is a technology that controls network traffic according to configured policy. A managed firewall service provides the people, process and oversight required to maintain that technology and its policies over time.
Yes, subject to platform compatibility, licensing, access requirements and the agreed service scope. The discovery phase confirms which devices and capabilities can be supported.
It can. Rule reviews may identify unused, duplicate, overly broad, temporary, shadowed or poorly documented rules. Changes are made only through the agreed approval process.
Yes. The service can include supported cloud-native and virtual firewall controls across defined cloud environments.
The service can assess current segmentation and recommend firewall policy changes. Larger network redesigns may require a separate network-security or security-architecture engagement.
Monitoring hours depend on the selected service. Where continuous monitoring is required, firewall telemetry may be integrated with an appropriate managed SOC or MDR engagement.
Routine and emergency change authority is agreed during onboarding. Digisecuritas follows the defined approval model and does not assume unrestricted change authority.
The review frequency should reflect the organisation's risk, rate of change, regulatory obligations and firewall environment. Temporary and higher-risk rules may require more frequent review.
No. Firewalls remain useful network controls, but network location alone should not determine trust. Identity, device posture, least privilege and resource-level access controls may also be required.
Discovery typically requires a firewall inventory, network context, administrative-access arrangements, relevant policies, change procedures, logging details and the names of responsible business and technical owners.
Reviewed by: Digisecuritas network security practice
Last reviewed: July 2025
BRING CONTROL BACK TO FIREWALL POLICY
Know Which Rules Protect the Business and Which Create Risk
Get an independent view of your firewall estate, policy controls and operating gaps. Digisecuritas can help you establish clearer governance and a practical model for ongoing firewall management.
Start with a focused discussion about your firewall platforms, network environment and management priorities.