Network Security Assessment & Architecture Review
We review topology, rules and exposure to show where your network is open to attack and what to fix first.
- Assessment report
- Topology review
Cybersecurity & Risk Management
Network Security Services
We design and harden your network with next-gen firewalls, micro-segmentation, secure remote access and traffic monitoring, limiting how far an intruder can move once inside.
- Firewall hardening
- Segmentation
- Zero-trust access
- Traffic monitoring
- Years of delivery
- 8+
- Years of delivery
- Projects shipped
- 350+
- Projects shipped
- Clients across US, UK, AU & SG
- 200+
- Clients across US, UK, AU & SG
What’s included
Everything You Need to Secure and Segment Your Network
Design, deployment and monitoring of firewalls, segmentation, VPN and zero-trust controls for office, data centre and cloud.
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Zero-Trust Network Architecture Design
We design a zero-trust model where every user, device and connection is verified, limiting an intruder's reach.
- Zero-trust blueprint
- Policy model
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Next-Generation Firewall Deployment & Rule Tuning
We deploy and clean up Fortinet, Palo Alto or Cisco firewalls, removing risky rules and improving performance.
- Firewall configuration
- Rule audit
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Network Segmentation & Micro-Segmentation
We isolate critical systems with VLANs and policies, so a single compromised device cannot reach everything.
- Segmentation plan
- VLAN design
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Secure Remote Access VPN & ZTNA Setup
Remote and hybrid staff connect through MFA-protected VPN or ZTNA, without exposing internal applications.
- VPN/ZTNA rollout
- Access policies
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IDS/IPS & Network Traffic Monitoring
We deploy intrusion detection and traffic analysis that flag malicious activity and unusual data flows early.
- IDS/IPS rules
- Alert runbook
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Wireless, DNS & Email Gateway Security
We harden Wi-Fi, DNS filtering and email gateways, closing common entry points for malware and phishing.
- Wi-Fi hardening
- DNS filtering policy
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Firewall Change Management & Quarterly Reviews
Ongoing rule reviews and managed changes keep your network policy clean as the business changes.
- Quarterly review report
- Change log
Need something specific?
Why Kramate
Why Business Owners Choose Kramate for Network Safety
We keep your office and remote staff connected, and keep strangers out.
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Work Carries On While We Change Things
Instead of
security changes that shut down the office
With Kramate
We plan every change around your working hours and keep a way to undo it.
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Safe Access for Staff at Home
Instead of: remote workers using risky shortcuts
With Kramate: We set up simple, safe ways for your team to reach work from anywhere.
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One Break-In Does Not Reach Everything
Instead of: one stolen laptop opening every door
With Kramate: We split your network into separate rooms, so a problem in one stays in that one.
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Old Rules Cleaned Out
Instead of: years of messy settings nobody dares touch
With Kramate: We tidy up old rules and explain each one we remove, so nothing breaks by surprise.
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We Keep Checking as You Grow
Instead of: a setup that is soon out of date
With Kramate: We review your settings on a regular rhythm as you add people, offices and tools.
Our approach
How We Improve Your Network Security, Step by Step
We check how your network is guarded, close open doors and keep watch on it.
6 clear steps 6 deliverables you keep
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Network Mapping
We map your offices, routers, firewalls and Wi-Fi to see what is connected and who can reach it.
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Open Door Testing
We look for open ports, weak firewall rules and unsafe remote access that outsiders could use.
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Safer Network Layout
We design how to split the network into zones, so one break-in cannot reach everything.
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Firewall Setup
We tighten firewall rules, remote access and Wi-Fi settings, making changes one small step at a time.
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Check the Changes
We confirm that business tools still work and that the closed doors stay closed.
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Traffic Watching
We set up alerts for strange network activity and review them with you on a regular basis.
Tools & technologies
Technologies We Use for Network Security
Tools are matched to your firewalls, remote access and traffic, with zero trust in mind.
- pfSense: Open-source firewall and router for network protection.
- OPNsense: Open-source firewall with filtering and intrusion prevention.
- Fortinet: Firewall and network security appliances, configured and tuned.
- Palo Alto Networks: Next-generation firewalls for traffic control and threat prevention.
- Cisco: Switches, routers and firewalls reviewed and hardened.
- WireGuard: Fast, modern VPN for secure connections between sites and users.
- OpenVPN: Widely used VPN for encrypted remote access.
- Tailscale: Private team network that connects devices without open ports.
- Cloudflare: Speeds up and protects sites with a global network and DNS.
- Wireshark: Inspects network traffic to spot misuse and misconfiguration.
- Suricata: Watches network traffic and flags known attack patterns.
- Snort: Detects and blocks suspicious network activity.
- Grafana: Dashboards and alerts for live system metrics.
- Nmap: Maps which devices and services are reachable on your network.
- Ansible: Automates server setup and configuration without manual steps.
- Python: Readable language for business logic, data and automation.
Expert guide
Network Security Services: A Complete Guide for Businesses
Network security services control which people, devices and systems are allowed to talk to each other, and watch for traffic that should not be there. They cover firewalls, how a network is divided into zones, secure remote access, wireless, and the monitoring that tells you something has changed.
Well-planned network security services assume that something will eventually go wrong inside the network, so it limits how far a problem can travel. That matters for offices, factories, clinics and hybrid teams whose work no longer sits inside a single building.
This guide explains the core controls, how zero trust changes the picture, what to know in the USA, UK, Australia and Singapore, what drives cost, and how to choose a provider.
What network security services cover
A network is the set of paths that connects users, devices, servers, cloud services and suppliers. Securing it means deciding which paths are needed and closing or watching the rest. Typical scope:
- Firewalls at the internet edge and between internal zones.
- Segmentation that separates guests, staff, servers and sensitive systems.
- Remote access for employees, contractors and suppliers.
- Wireless networks and the devices that join them.
- DNS, web and email filtering.
- Logging and monitoring of network activity.
If you also need people watching alerts around the clock, see managed SOC services, which build on the logs a well-designed network produces.
Core controls explained
| Control | Question it answers | Common mistake |
|---|---|---|
| Firewall | Which traffic may enter, leave or cross zones? | Old rules never removed; “allow any” left in place |
| Segmentation | How far can a problem spread? | One flat network for everything |
| Secure remote access | How do outsiders and remote staff reach internal systems safely? | Broad access for everyone, no multi-factor authentication |
| Wireless security | Who may join, and to what? | Shared passwords and guests on the staff network |
| DNS and web filtering | Can users reach known-bad destinations? | Not applied to remote laptops |
| Monitoring and logging | Would we notice something unusual? | Logs collected but nobody reviews them |
Basic hygiene sits under all of this: change default passwords, apply firmware updates, close unused ports and keep an up-to-date diagram. The UK Cyber Essentials (opens in a new tab) scheme, for instance, treats firewalls and secure configuration as core controls.
Network segmentation in practice
Segmentation divides a network into zones with rules between them. If one laptop is compromised, the attacker should find that it cannot see the payroll server or the production line. Ransomware guidance such as CISA StopRansomware (opens in a new tab) highlights segmentation among measures that limit spread.
A practical order of work:
- Map traffic. Learn who talks to what before you block anything.
- Define zones. For example staff, guests, servers, payment systems, building systems and production equipment.
- Write allow rules for known needs and deny the rest.
- Test in monitor mode, then enforce in stages with a rollback plan.
- Review rules on a schedule so they do not accumulate.
Zero trust and what it changes
Zero trust is an approach rather than a product. The NIST zero trust architecture publication (opens in a new tab) describes it as moving defenses from network perimeters to users, assets and resources: being on the network no longer earns trust by itself. Each request is checked against identity, device health and policy.
For a business, this usually means these steps, taken gradually:
- Strong identity with multi-factor authentication for every remote and administrative login.
- Access to applications rather than the entire network, replacing broad VPN access where feasible.
- Checks on device health before access is granted.
- Least-privilege rules and logging of access decisions.
A VPN can remain part of the design. The goal is narrower, better-checked access. Combine this work with cloud security when your applications live outside the office.
Where AI helps network defense
Machine learning is used in network monitoring to learn what normal traffic looks like and flag unusual patterns, such as a printer suddenly sending large amounts of data outward. It can also group related alerts and help analysts triage.
Treat these tools as an aid. They need tuning to your environment, they can miss novel behavior, and a person should decide on any blocking action that could interrupt business.
Industry examples
- Manufacturing: separating production equipment from the office network, with a controlled gateway between them.
- Healthcare: isolating medical devices that cannot be patched often, and limiting what they can reach.
- Retail: keeping payment terminals in their own zone, which also narrows the scope of card-data reviews under the PCI standards (opens in a new tab).
- Professional services: replacing broad VPN access with per-application access for contractors.
These are illustrative scenarios, not Kramate client results.
Regional considerations: USA, UK, Australia and Singapore
- USA: federal and sector guidance, including NIST publications, shapes expectations; health, finance and payments each have network-related rules. Confirm which apply with counsel.
- UK: the NCSC guidance collections (opens in a new tab) and Cyber Essentials give a practical baseline for network controls.
- Australia: the Essential Eight and the Privacy Act 1988 set reference points for access and protection of personal information.
- Singapore: the Cyber Security Agency of Singapore (opens in a new tab) publishes resources, and the Personal Data Protection Act applies to personal data.
Multi-country networks need consistent rules and a clear owner for changes across time zones. Ask how a provider handles urgent out-of-hours requests in each region.
Cost factors and budget planning
- Number of sites, users, devices and network zones.
- Hardware or virtual appliance choices and licensing.
- Design and migration effort, especially for flat networks and legacy equipment.
- Remote access and identity integration.
- Ongoing management, rule reviews and monitoring.
- Downtime planning for changes in production environments.
Network security services can be bought as a design-and-implement project, which suits a defined change, while a monthly managed arrangement suits ongoing rule changes and review. Phase the work so the highest-risk separations come first.
How to choose network security services
- Discovery before design: a traffic map and asset list, not a product quote first.
- Vendor-neutral advice where possible, with reasons for each product.
- Staged change plans with testing and rollback.
- Documentation you keep: diagrams, rule rationale and runbooks.
- Clear change control and response times for urgent rule changes.
- Experience with your environment, such as industrial or healthcare networks if relevant.
How Kramate delivers it
We work under an NDA from the first detailed discussion. Your dedicated project manager shares updates daily on Slack or Teams, and each two-week round ends with a progress review of what changed and what is next. Diagrams, configurations and documentation, along with all intellectual property, are transferred to you.
Start with a free consultation and get a detailed estimate within 24 hours, with fixed-price, dedicated-team or hourly options. We overlap four to six hours with US Eastern time and a full day with the UK, Australia and Singapore, which helps when changes must be scheduled around local business hours. The full process is in our approach. A vulnerability assessment is a useful first check of what your network exposes today.
Frequently asked questions
What is network segmentation and why does it matter?
Segmentation divides a network into zones with rules between them. If one device is compromised, the problem has a harder time reaching sensitive systems, which limits damage and simplifies monitoring.
Is zero trust a replacement for a VPN?
Not necessarily. Zero trust checks identity, device health and policy for each request. Some organizations keep a VPN as one part of the design and narrow what it can reach, while moving applications to per-app access.
How do I secure a small business network?
Use a business-grade firewall with updated firmware, separate guests from staff, require multi-factor authentication for remote access, change default passwords, and keep a simple diagram and a review routine. Start with the internet edge and the Wi-Fi, then work inward.
What should a firewall rule review include?
Look for rules that are unused, overly broad or without an owner, check each rule against a business reason, remove stale entries, and record changes. Repeat on a regular schedule.
How do we give remote workers safe network access?
Require multi-factor authentication, check device health, give access to specific applications instead of the whole network, filter DNS on the laptop itself, and log access for review. Revisit permissions whenever someone changes role or leaves.
Can operational technology networks be secured without downtime?
Usually yes, with planning. Map traffic first, segment in stages, test in monitoring mode and involve the operators. Avoid changes during critical production periods, and keep a tested rollback plan ready for every stage.
Sources and further reading
- NCSC UK Cyber Essentials (opens in a new tab)NCSC UK
- CISA StopRansomware (opens in a new tab)CISA
- NIST SP 800-207 Zero Trust Architecture (opens in a new tab)NIST
- PCI Security Standards Council Document Library (opens in a new tab)PCI SSC
- NCSC UK Guidance and Collections (opens in a new tab)NCSC UK
- Singapore CSA Cybersecurity Resources (opens in a new tab)Cyber Security Agency of Singapore
FAQ
Frequently asked questions
Cost depends on the number of sites, network devices, users and remote workers, plus the controls needed: firewalls, segmentation, VPN or zero-trust access. Existing hardware age, vendor licences and testing windows also matter. Send us your network security scope and a no-obligation estimate follows within 24 hours.
We map the network, review rules and traffic, design segmentation and access controls, implement changes in planned windows, and test and document. Duration depends on number of sites, device types and how much downtime is tolerated. Rule clean-up takes longer on old networks.
You do. Before detailed network security talks, Kramate signs an NDA and transfers IP and deliverables to you. Diagrams, rule sets, configuration backups and runbooks are handed over. Network details are treated as sensitive and shared only with named staff.
Yes. We work with major vendors such as Fortinet, Palo Alto, Cisco and Juniper, and cloud-native controls. We improve what you own before recommending replacements. Changes follow your change control, with rollback plans ready. We document every change so your team can review and reverse it.
Zero trust means no user or device is trusted by default; each request is verified against identity, device health and policy. It can replace or reduce traditional VPN by giving access to specific apps rather than the whole network. Many firms move in stages.
Segmentation splits a network into zones so an intruder who reaches one device cannot easily move to others. It limits the spread of ransomware and protects sensitive systems. Good segmentation needs clear traffic maps and tested rules.
Frequent problems are any-to-any rules, unused rules nobody dares remove, default passwords, unpatched firmware, flat networks and open remote access ports. A rule review often finds these quickly. We test each cleanup in stages so business traffic is not cut off by mistake, and we keep configuration backups for rollback.
Taking new projects
Let’s talk about your Network Security Services needs
Tell us about your project and get a free consultation and estimate within 24 hours.
- We reply within 4 business hours A real consultant reads your brief — no bot, no queue.
- 30-minute discovery call We dig into goals, constraints and budget. NDA signed on request.
- Proposal in 24 hours Scope, timeline, team and price — clear enough to decide on.
NDA on request You own the IP No obligation Free estimate