Sherlocked Security – Cloud Network Segmentation 🌐
Secure Your Cloud Perimeter by Designing Intent-Based, Least Privilege Network Architecture
📄 1. Statement of Work (SOW)
- Service Name: Cloud Network Segmentation
- Client Type: Cloud-Native Organizations, SaaS Providers, Enterprises Under Compliance Mandates
- Service Model: Architectural Review + Firewall Rule Audit + Segmentation Strategy
- Compliance Coverage: PCI-DSS, ISO 27001, NIST SP 800-207 (Zero Trust), SOC 2, HIPAA
🎯 Target Environments
- AWS VPC / Azure VNet / GCP VPC
- Hybrid & Multi-Cloud Architectures
- Kubernetes Clusters (Network Policies)
🧠 2. Our Approach (with Visual)
- 🔹 Zero Trust-Aligned Segmentation
- 🔹 Least Privilege + Intent-Based Networking
- 🔹 Cloud-Native Controls + Manual Architecture Review
Visual Workflow:
[Environment Discovery] →
[Traffic Flow Mapping] →
[Firewall Rules Review] →
[Critical Asset Isolation] →
[Policy Recommendations] →
[Implementation Plan] →
[Verification & Monitoring]
Color Code:
- Discovery: #064d52
- Testing/Attack: #8b0505
- Closure: #0f5c5a
🧪 3. Methodology (with Visual)
Phase-by-Phase Flow:
[Kickoff] →
[Asset Grouping by Function] →
[Ingress/Egress Flow Audit] →
[Firewall/SG/NACL Review] →
[Zero Trust Segmentation Planning] →
[Policy Drafting] →
[Stakeholder Review] →
[Monitoring & Logging Validation] →
[Final Implementation Support]
Visual Color Flow:
🔹 Blue (Planning: #064d52)
🔸 Red (Exploitation/Gaps: #8b0505)
✅ Green (Closure: #0f5c5a)
📦 4. Deliverables to the Client
- ✅ Cloud Network Segmentation Matrix
- 🧾 Statement of Work (SOW)
- 📘 Technical Architecture Review:
- Asset Inventory & Traffic Flows
- Firewall Rule Audit Findings
- Public Exposure Risk Summary
- Segmentation Strategy & Recommendations
- Least Privilege Policy Templates
- References (CIS, Zero Trust, NIST)
- 📊 Visual Network Diagrams (Before & After)
- 📽️ Policy Walkthrough + Q&A Call
- 🧑💻 DevOps Support for Implementation
- 🔁 Post-Deployment Validation
- 🛡️ Final Certification Document
🤝 5. What We Need from You (Client Requirements)
- ✅ Access to Cloud Network Diagrams
- ✅ IAM or Viewer access to Firewall/NACL configs
- ✅ VPC Flow Logs (if available)
- ✅ Knowledge of critical assets & functions
- ✅ Contact from Infra/Networking team
- ✅ Terraform/CloudFormation scripts (optional)
🧰 6. Tools & Technology Stack
- 🌐 AWS Security Hub / Azure Network Watcher / GCP VPC Analyzer
- 🔍 Nmap / Flowalyzer / Wireshark (for optional validation)
- 📦 Infrastructure-as-Code (Terraform, CloudFormation)
- 🛠️ CloudMapper / Cartography (Network Graphs)
- 🧱 Calico / Cilium (for Kubernetes Network Policies)
🚀 7. Engagement Lifecycle (Lead → Closure)
- Discovery Call
- Access Provisioning
- Kickoff + Scope Finalization
- Traffic Flow Mapping & Rule Review
- Draft Segmentation Strategy
- Final Report + Diagrams
- Policy Review Session
- Fix Support + Post-Change Review
- Certificate of Completion
🌟 8. Why Sherlocked Security? (Our USP)
| Feature | Sherlocked Advantage |
|---|---|
| 🧱 Deep Network Segmentation | Support for VPC, Kubernetes, Hybrid Clouds |
| 📘 Policy-Based Architecture | Designed around Zero Trust and least privilege |
| 🧠 Expert-Led Firewall Reviews | Manual + tooling-based config audits |
| 🔁 Fix Support Included | 1 round of post-change validation |
| 📽️ Visual Reports | Asset maps, traffic paths, firewall diffs |
| 🏆 Segmentation Certificate | Issued after validation |
📚 9. Real-World Case Studies
🛑 Flat Network in a FinTech AWS Setup
- Issue: All services in a flat /16 subnet without any egress filtering
- Impact: Attack on a staging host led to lateral movement to production systems
🛠️ Our Fix Journey: EdTech VNet Review
- Client: Azure-based EdTech company with global users
- Findings:
- Unused NACLs and open subnet-to-subnet traffic
- No segmentation for internal vs external-facing apps
- Our Role: Reviewed NSG and firewall rules
- Outcome: 70% reduction in internal attack surface; Clear audit trail for SOC 2 readiness
🛡️ 10. SOP – Standard Operating Procedure
- Kickoff Call + Scope Definition
- Cloud Diagram & Config Access Setup
- Traffic Flow + Firewall Rule Analysis
- Threat Modeling of Exposure Points
- Policy and Segmentation Drafting
- Visual Diagrams Creation
- Report Submission and Review
- DevOps Implementation Support
- Post-Deployment Review + Certificate
📋 11. Sample Segmentation Checklist (Preview)
- Define segmentation zones based on business functions.
- Use VPCs, subnets, and security groups to isolate resources.
- Control traffic flow with NACLs and firewall rules.
- Apply zero-trust network access principles.
- Implement bastion hosts and VPN gateways for remote access.
- Encrypt traffic between workloads and services.
- Use service mesh for microservice segmentation.
- Monitor inter-segment traffic for anomalies.
- Conduct regular network flow audits and updates.
- Document and visualize network topology and segmentation.