Network Security

Challenge
A large financial services firm must enable secure, temporary access to sensitive internal systems — such as database servers, internal apps, and file shares — for employees, contractors, and third-party auditors connecting from various environments, including on-premises, remote, and guest networks. Without proper Zero‑Trust enforcement, the organization faces three major risks:
Over-Privileged Access
Traditional VPNs and static firewall rules often grant permanent, broad access to internal systems. In a globally distributed workforce model, this exposes critical infrastructure if a credential or endpoint is compromised. Users — including external auditors or temporary contractors — may retain access longer than necessary. Zero‑Trust minimizes this risk by enforcing dynamic, least-privilege access that is both time-bound and context-aware.
Lateral Movement
Once inside the network, attackers or malware can exploit inadequate segmentation to move laterally across systems. With users accessing from diverse locations and roles, the lack of fine-grained controls makes containment difficult. Zero‑Trust enforces micro-segmentation and isolates access to specific applications or data — ensuring that even if one point is breached, the threat cannot spread laterally across the network.
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Shadow Software and Script Usage
Remote work environments — especially work-from-home setups — often involve unmanaged or less-monitored devices, increasing the risk of unauthorized tools, browser extensions, or custom scripts being used outside of corporate control. These shadow applications can introduce vulnerabilities, leak sensitive data, or cause inadvertent compliance violations. The risk is further amplified when users bypass security protocols to simplify workflows on personal devices.
Solution
Dynamic Network Control with Just-in-Time Access
In a Zero‑Trust architecture, all network access is denied by default. Inbound connections to internal systems are blocked unless explicitly authorized. When users or devices require access, permissions are granted dynamically for a specific IP address, port, and limited time window, following proper identity verification and approval. Once the session concludes or the time expires, access control rules are automatically revoked. This just-in-time access model reduces the risk of persistent exposure and minimizes the infrastructure’s attack surface.
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Application Allowlisting and Execution Control
A strict default-deny execution policy ensures that only pre-approved applications and scripts can run on endpoints. This effectively prevents unauthorized software, malware, and unverified third-party tools from executing. Even approved applications are constrained through behavioural controls — they are restricted from launching other processes, modifying protected system files or registries, or communicating with unauthorized network resources. This approach blocks fileless attacks and prevents malicious use of legitimate tools, greatly strengthening endpoint and network security.
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Centralized Visibility, Policy Management, and Compliance Enforcement
A centralized logging and policy management system captures all attempts to execute applications or establish network connections, providing complete transparency into user and device activity. This enables real-time monitoring, streamlined incident response, and easier enforcement of internal policies. Moreover, the solution supports regulatory compliance requirements by enforcing least privilege access, identity verification, and network segmentation, all while maintaining detailed, auditable records for reporting and investigation.
Zero Trust Enterprise Resource Access
Network Access Control
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Challenge
Unrestricted Lateral Movement
When an attacker slips past the perimeter — whether through stolen credentials, an unsecured VPN, or simple physical access — they’re often met with little to no resistance once inside. The network becomes flat terrain, allowing them to traverse laterally from system to system unchecked. This lack of segmentation is more than a gap — it's an open invitation for ransomware to spread, for sensitive data to be exfiltrated, and for the entire domain to fall under siege. We’ve witnessed environments where a single compromised HR workstation became the attacker's foothold into finance and production systems, purely because no controls existed to halt lateral movement. It’s not theoretical — it’s operational risk, realized.
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Unauthorized or Rogue Device Access
In the modern workplace, the convenience of connectivity can become a double-edged sword. Unmanaged BYOD laptops, guest devices, or even seemingly innocuous IoT endpoints can freely plug into the corporate network if not rigorously controlled. These devices are often unpatched, unscanned, and unsanctioned — making them ideal entry points for threats and compliance failures. I’ve seen firsthand how a vendor’s outdated, unprotected laptop became the unwitting delivery mechanism for malware, simply by connecting to a shared subnet. That’s not just a misstep — it’s a systemic flaw that leaves the door wide open.
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Lack of Visibility & Policy Enforcement
Without proper network access control, organizations are flying blind. There’s no reliable way to identify or classify connecting devices, let alone enforce meaningful security policies at scale — particularly in a hybrid workforce where access can come from anywhere. The result is fragmented security, audit gaps, and an inability to prove compliance with critical standards like NIST, HIPAA, or ISO 27001. I’ve encountered situations where financial auditors were given open, unmonitored access across multiple systems, with no session time limits or traceable logs. That’s more than a governance failure — it’s a breach of trust, accountability, and regulatory responsibility.
Solution
Unrestricted Lateral Movement
To effectively halt lateral movement within the network, we adopt a role-based, identity-aware access model where users and devices must validate their identity and security posture before being granted any access. But we don’t stop at the gate. Our approach applies micro-segmentation and adaptive access controls to dynamically place devices into tightly scoped VLANs based on their compliance status and role within the organization. This way, endpoints are only allowed access to the resources they need — nothing more. Any unauthorized attempt to traverse into restricted subnets or critical systems is immediately blocked. This isn’t just segmentation — it’s strategic containment, built to neutralize threats before they move.
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Unauthorized or Rogue Device Access
The reality of today’s hybrid enterprise is that not every device can be trusted. That’s why our solution incorporates continuous endpoint posture assessment — checking for everything from antivirus status and patch levels to valid device certificates — before full access is granted. Devices that fail to meet compliance thresholds aren’t left unchecked; they’re automatically redirected into a controlled quarantine zone or guest access portal. This structured workflow ensures that rogue or unmanaged devices are never a threat to production networks. It’s about trust, but verify — and we’ve engineered it to be frictionless for users, yet unforgiving to risk.
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Lack of Visibility & Policy Enforcement
Visibility without action is noise. That’s why our NAC solution delivers real-time, actionable insights into every device, user, and application interacting with the network. We provide centralized, policy-based access enforcement that allows IT teams to apply rules based on user identity, device compliance, geolocation, and even access timeframes—all from a single control plane. When violations occur, alerts are triggered, and access is immediately re-evaluated. What’s more, every session — whether permitted or denied — is logged in detail, building a comprehensive audit trail that meets the requirements of HIPAA, PCI, GDPR, and ISO frameworks. This is security that speaks the language of governance and is built to scale.​