Network Security

Firewall · IPS · SD-WAN
Integrated Network Security

Amid rising cyber threats and increasingly complex networks, protect the internal network, the internet perimeter and remote access under a single framework.

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Related Products
FortinetFortinet GeniansGenians F5F5 Stellar CyberStellar Cyber
WHY NETWORK SECURITY

Why integrated network security, now?

Modern cyber attacks have moved far beyond defending a single perimeter. As branches, data centers, cloud and remote workers all behave as one network, a firewall alone cannot stop lateral movement or threats hidden inside encrypted traffic. Security products scattered across vendors fail to share threat intelligence and each fires its own alerts — leaving operations teams with alert fatigue and delayed response.

Expernet's integrated network security connects firewall·IPS·SD-WAN·NAC·EDR·SIEM under a single threat intelligence centered on the Fortinet Security Fabric. A threat detected by FortiGate is instantly shared with FortiNAC and FortiClient to auto-isolate infected devices, and integration with Stellar Cyber Open XDR correlates logs from other vendors to reconstruct the attack chain. With one unified console, even a small security team can systematically protect large-scale infrastructure.

With over two decades of network and security delivery experience, Expernet covers the full lifecycle — from legacy firewall migration to SD-WAN/SASE transition, micro-segmentation and 24×7 operations support. We design customer-specific architectures grounded in hands-on experience across finance, public sector, manufacturing and healthcare environments with strict compliance requirements.

CHALLENGES

Are you facing these problems?

Surge in ransomware & APT
Sophisticated malware and APT attacks that legacy firewalls cannot detect grow every year.
Hard to manage distributed sites
Applying consistent policy across HQ, branches and remote workers is complex.
Insider threats & rogue devices
It is difficult to know who connects with which device — employee PCs, IoT, contractor laptops.
Operational complexity from sprawl
As firewalls, IPS, VPN and NAC pile up, management burden and false positives increase.
OT/ICS security gaps
Production equipment and SCADA are hard to cover with traditional IT security, creating blind spots.
Compliance pressure
Finance, healthcare and public agencies need a systematic response to network separation, privacy law and ISMS-P.
SOLUTION

Expernet Network Security Framework

Not a single vendor — we design a multi-vendor integrated security architecture optimized for your environment.

Fortinet Security Fabric NGFW · SD-WAN · OT Security

Fortinet Security Fabric

FortiGate NGFW protects the internet perimeter and internal segments, while SD-WAN shifts branch leased lines to internet-based connectivity to cut costs. FortiGuard AI threat intelligence blocks emerging threats in real time.

  • ✓Next-gen firewall (NGFW) + IPS + application control
  • ✓FortiAnalyzer central log & event analytics
  • ✓30–60% WAN cost savings via SD-WAN
  • ✓FortiGate Rugged for OT/ICS environments
View product details →
Featured Use Case
Manufacturing OT security
Segmented production-line SCADA from the IT network with FortiGate, blocking ransomware spread into OT.
Genians NAC NAC · ZTNA · Device Visibility

Genians NAC

Automatically identifies and classifies every wired, wireless and IoT device. Policy-based network access control instantly blocks unauthorized devices and applies Zero Trust principles to the internal network.

  • ✓Automatic device discovery & classification (IP/MAC/OS/service)
  • ✓Dynamic VLAN·ACL policy enforcement
  • ✓Agentless approach supports legacy environments
  • ✓Addresses ISMS-P and financial network-separation compliance
View product details →
Featured Use Case
Financial network-separation compliance
Separated business and internet networks, auto-blocked unauthorized USB/devices, met ISMS-P requirements.
F5 BIG-IP ASM / WAF WAF · DDoS · SSL Inspection

F5 BIG-IP ASM / WAF

Protects web applications and APIs from OWASP Top 10 attacks. It decrypts SSL/TLS traffic to detect encrypted threats and mitigates large-scale DDoS attacks at L4/L7.

  • ✓L7 WAF — automatic OWASP Top 10 blocking
  • ✓SSL Orchestration for encrypted-traffic visibility
  • ✓API security — REST·GraphQL attack defense
  • ✓Granular control with custom iRules policy
View product details →
Featured Use Case
Large e-commerce WAF deployment
Real-time SQL Injection/XSS blocking for a shopping mall handling 5M daily page views, with full SSL inspection.
IMPACT

Business Impact

The outcomes you can expect from the Expernet Network Security Framework.

99.9%
Known-threat block rate
Real-time detection and blocking with FortiGuard AI intelligence pre-empts ransomware and APT attacks.
30–60%
WAN cost savings
Lower cost than leased lines after SD-WAN transition.
100%
Device visibility
NAC auto-discovery identifies and classifies every connected device.
80%↓
Operational complexity
Unified Security Fabric management ends per-appliance operations.
ISMS-P
Compliance ready
Addresses financial/public network-separation and ISMS-P requirements.
A traditional firewall performs only IP/port-based packet filtering. An NGFW adds application identification, IPS (intrusion prevention), SSL decryption, sandboxing and URL filtering — detecting and blocking encrypted threats and sophisticated attacks.
Genians NAC supports both agentless and 802.1X modes. The agentless mode uses your existing switches and APs without replacement, making it suitable for legacy environments.
Fortinet SD-WAN runs on FortiGate with built-in security, so NGFW·IPS·SSL inspection are preserved. It actually enables finer traffic control and encryption than leased lines.
Both Fortinet and Genians offer product lines from SMB to enterprise. Expernet proposes the optimal configuration for your environment and budget, and supports a free PoC.
Through a maintenance contract, Expernet assigns dedicated engineers and provides incident response, periodic checks and the latest firmware patches — including a 24×7 emergency response service.

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We analyze your current security architecture and propose vulnerabilities and improvements.

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