// Contain lateral movement, isolate critical financial enclaves, and enforce zero-trust network baselines.
Enterprise networks are under continuous pressure from sophisticated threat actors exploiting flat architectures, insecure protocols, and perimeter-only security models. Sinan Arcana delivers engineering-led network hardening, L2/L3 switch and router configuration baselining according to CIS benchmarks, 802.1X network access control (NAC), firewall rulebase optimization, and micro-segmentation to quarantine SWIFT, core banking, payment switches, and DMZs.
Why this capability matters to your business.
Adversaries rely on flat internal enterprise networks to pivot from a single compromised workstation directly to core banking databases, domain controllers, and critical servers. Micro-segmentation and rigorous protocol hardening ensure that a breach in one zone remains strictly isolated, denying attackers east-west traversal.
Commercial banks, fintechs, telcos, government CII operators, and enterprises with complex or flat multi-site networks.
Technical Engagement Methodology
Every engagement follows structured, repeatable, and disciplined operational phases.
Architecture & Segmentation Audit
Comprehensive review of L2/L3 network topologies, VLAN zoning, routing protocol authentication (BGP/OSPF), and perimeter/internal firewall rulebases against CIS benchmarks.
Crown Jewel Enclave Micro-Segmentation
Engineering granular zero-trust isolation boundaries for critical assets including SWIFT terminals, Core Banking Systems (CBS), HSM vaults, and Card Payment switches.
Access Control & NAC Hardening
Deploying 802.1X port security, disabling insecure management protocols (Telnet, HTTP, SNMPv1/v2), enforcing SSH key-based administration, and securing management planes via TACACS+/RADIUS.
Adversary Traversal Validation
Simulating live lateral movement and covert pivot techniques to empirically prove that east-west traffic cannot traverse micro-segmented boundaries without detection.
Deliverables You Can Act On
We deliver concrete technical artifacts and board-ready executive summaries—never generic automated scanner exports.
Whether you're hardening defenses, preparing for an incident, or in the middle of one, the first call is the same.