Firewalls remain a core control, but only when they are configured for today’s threats rather than yesterday’s network. Network security services from WC1 cover next-generation firewall (NGFW) design, migration, rule clean-up, segmentation, and intrusion prevention across data centres, branches, and cloud edges for organisations in Singapore and the Philippines.
The problem: why network security and next-generation firewalls matters
Firewall rulebases accumulate over years: any-any rules added during an outage, objects nobody can explain, and policies that allow far more than needed. Next-generation features such as application identification, threat prevention, and TLS inspection are licensed but disabled.
Flat internal networks let attackers move laterally from one compromised laptop to domain controllers and backups. Edge devices themselves, when unpatched, have become prime targets.
Who this service is for
Organisations with data centres, campuses, or branch networks; teams migrating between firewall vendors or refreshing hardware; and regulated entities preparing for audits of network controls.
What WC1 delivers
Every engagement is scoped to your environment and risk. These are the building blocks we combine for network security and next-generation firewalls:
- Firewall health check: Review of configuration, rulebase, firmware, and management access against best practice and your policy.
- Rulebase clean-up and optimisation: Identification of unused, shadowed, and over-permissive rules, and a safe, staged clean-up.
- NGFW migration: Vendor-to-vendor or hardware refresh migrations with policy translation, testing, and cutover plans.
- Network segmentation: Design of zones and micro-segmentation to protect crown-jewel systems and limit lateral movement.
- Threat prevention enablement: Intrusion prevention, anti-malware, URL filtering, DNS security, and selective TLS inspection.
- Edge device hardening: Patch management, management-plane isolation, and monitoring for firewall and VPN appliances.
How the engagement runs
1. Review
Collect configurations and traffic logs, interview network owners, and assess risk.
2. Design
Define target zones, policies, and feature enablement, and plan changes in safe stages.
3. Implement
Apply clean-up, segmentation, and feature changes through your change process, with rollback plans.
4. Validate
Test policy effectiveness and confirm business applications work as expected.
5. Maintain
Set up rule review cadences, change workflows, and monitoring of edge devices.
Commercial shape follows the work: a fixed-scope assessment or implementation when the problem is well bounded, or a retainer when you need ongoing operation, tuning, and reporting. Coverage hours, response times, and responsibilities are written into the statement of work so there are no surprises.
Deliverables you can expect
- Firewall health check report
- Rulebase clean-up plan and change records
- Migration runbook and test results
- Segmentation design and policy matrix
- Threat prevention profiles
- Rule review and edge patching procedure
Platforms and tools we integrate
We work with Palo Alto Networks Strata NGFWs and Panorama, Fortinet FortiGate and FortiManager, Check Point Quantum, Cisco Secure Firewall, and cloud-native firewalls on AWS, Azure, and GCP, along with firewall policy management tools such as Tufin and AlgoSec.
WC1 is vendor-neutral: we integrate the platforms you already own before recommending anything new. Naming a product here describes technology we work with; it does not imply a partnership, reseller agreement, or vendor certification.
Singapore: regulatory and market relevance
MAS Notice on Cyber Hygiene explicitly requires network perimeter defence to restrict unauthorised network traffic, and the TRM Guidelines cover network segmentation and security. CSA’s Cybersecurity Code of Practice for CII includes network architecture requirements. A clean, documented rulebase and segmentation design make these controls auditable.
Philippines: regulatory and market relevance
BSP Circular 982 expects banks to implement network security controls including firewalls, segmentation, and intrusion detection. Philippine government agencies and critical infrastructure operators are guided by DICT’s National Cybersecurity Plan toward stronger network defences. Organisations holding personal data must use appropriate technical measures under the Data Privacy Act.
How this fits the rest of your security programme
Network Security and Next-Generation Firewalls rarely stands alone. It works best alongside Zero Trust and SASE, OT and IoT Security, VAPT and Vulnerability Management, SIEM and SOC Modernization. It also connects to our Cloud Infrastructure in Singapore services. See the full catalogue on our Cybersecurity services page.
Related reading: Philippines hybrid connectivity checklist for Singapore sponsors.
Frequently asked questions
Can you clean up our rulebase without breaking applications?
Yes, by analysing traffic logs to see which rules are used, staging changes, and keeping rollback options through your change process.
Should we enable TLS inspection?
Selectively. Inspection improves threat visibility but has privacy, performance, and compatibility implications. We design exemptions for sensitive categories such as banking and health.
Do you support firewall migrations between vendors?
Yes, including policy translation, object clean-up during migration, and parallel testing before cutover.
Is network segmentation still relevant with zero trust?
Yes. Segmentation limits lateral movement and complements identity-based access, especially for servers, OT, and legacy systems.
How often should firewall rules be reviewed?
At least annually for all rules and more often for high-risk rules, with automated reports on unused rules in between.
Next step
Tell us which firewalls you run and what worries you about them. We will propose a health check as a practical first step. Contact WC1 for a no-obligation conversation; we will tell you honestly if we are not the right fit.