Security Architecture Guide
Built for organizations that need clearer security controls, stronger documentation, and better visibility across their IT environment.
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Why Security Architecture Matters
Many organizations gradually deploy security technologies over time.
Different administrators make changes, new systems are added, users change roles, and documentation becomes outdated.
Eventually organizations may have:
- Unknown administrative access
- Firewall rules nobody understands
- Shared accounts
- Inconsistent MFA
- Network complexity
- Limited monitoring
- Missing documentation
A security architecture review helps establish consistency, reduce risk, and improve operational readiness.
Core Security Architecture Domains
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Identity & Administrative Access
Review privileged accounts, administrator roles, multi-factor authentication, conditional access, emergency access accounts, and administrative workstations.
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Network Security
Review firewall policies, remote access, VPN, network segmentation, VLAN design, wireless security, and Internet connectivity.
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Data Protection
Identify business-critical data, ownership, storage locations, external sharing, retention, backup, and recovery capabilities.
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Endpoint Security
Review device compliance, operating system health, endpoint protection, encryption, patch management, and device lifecycle.
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Email Security
Review phishing protection, spam filtering, attachment scanning, domain protection, and secure email configuration.
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Monitoring & Logging
Review alerting, audit logs, security monitoring, log retention, incident response processes, and operational visibility.
Identity & Administrative Controls
Administrative accounts represent one of the highest-risk areas within any organization.
A security review typically evaluates:
✓ Administrator inventory
✓ Role separation
✓ MFA enforcement
✓ Conditional Access
✓ Privileged Identity Management
✓ Emergency (Break Glass) accounts
✓ Administrative workstation requirements
✓ Geographic access restrictions
Network Security Foundation
Rather than simply installing firewalls, organizations benefit from a documented network security strategy.
Topics commonly reviewed include:
- Internet edge security
- Firewall policies
- Public IP exposure
- NAT configuration
- VPN architecture
- VLAN design
- Network segmentation
- Guest isolation
- IoT isolation
- Wireless security
- DNS filtering
- Web content filtering
Network Segmentation
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Server & Infrastructure
Critical servers, virtualization hosts, storage, backup infrastructure, and management systems.
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IoT & Building Systems
Printers, cameras, conference rooms, HVAC, badge systems, and other operational devices.
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User Network
Employee workstations and laptops.
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Guest Network
Completely isolated Internet-only access for visitors and unmanaged devices.
Protecting Business Data
Understanding where business data resides is equally important as protecting it.
Organizations should document:
- Data owners
- Sensitive information
- Microsoft 365 locations
- File servers
- Cloud storage
- External sharing
- hird-party SaaS platforms
- Backup coverage
- Retention policies
Email Security
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Anti-Phishing
Protect users against impersonation and credential theft.
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Malware Protection
Scan attachments and URLs before delivery.
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Domain Protection
SPF, DKIM, and DMARC configuration.
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Mail Flow
Review transport rules, connectors, and third-party integrations.
Monitoring & Operational Visibility
Security controls are most effective when supported by continuous monitoring.
Organizations typically review:
✓ Security alerts
✓ Infrastructure health
✓ Firewall events
✓ Microsoft 365 alerts
✓ Backup failures
✓ Endpoint events
✓ Authentication activity
✓ Operational dashboards
Security Documentation Checklist
Strong security depends not only on technology, but also on clear documentation. Well-maintained documentation supports daily operations, reduces dependency on individual administrators, accelerates troubleshooting, and provides evidence during security reviews or audits.
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🆔 Identity & Access
Administrative roles, privileged accounts, authentication methods, MFA requirements, emergency access accounts, and identity ownership.
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🌐 Network Topology
Logical and physical network diagrams showing sites, WAN connectivity, VLANs, switches, firewalls, wireless infrastructure, and Internet connections.
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🔥 Firewall Policies
Document inbound and outbound access rules, NAT configuration, VPN settings, public IP assignments, and security exceptions.
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📡 VLAN & IP Addressing
Document network segmentation, IP ranges, VLAN assignments, routing boundaries, DHCP scopes, and reserved address allocations.
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☁️ Microsoft 365 Configuration
Record tenant architecture, licensing, administrative roles, Conditional Access, security policies, Exchange, SharePoint, and Teams configuration.
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🔐 Conditional Access
Maintain an inventory of Conditional Access policies, targeted users, excluded accounts, device requirements, and sign-in restrictions.
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💾 Backup & Recovery
Document backup scope, retention policies, protected workloads, recovery objectives, testing schedules, and restoration procedures.
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🚨 Disaster Recovery
Define recovery priorities, recovery procedures, communication plans, critical dependencies, and business continuity processes.
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🖥 Asset Inventory
Maintain an inventory of servers, workstations, networking equipment, cloud services, software platforms, warranties, and lifecycle information.
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👤 Administrative Accounts
Track privileged accounts, service accounts, account owners, authentication methods, password management, and review schedules.
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📈 Monitoring & Alerting
Document monitored systems, alert thresholds, notification recipients, escalation procedures, and operational dashboards.
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📝 Change Management
Maintain records of infrastructure changes, approvals, implementation dates, rollback plans, and configuration history.
Well-maintained documentation helps organizations:
✓ Reduce operational risk
✓ Simplify onboarding of new administrators
✓ Speed up troubleshooting
✓ Support compliance and audits
✓ Improve disaster recovery readiness
✓ Preserve institutional knowledge
✓ Enable consistent infrastructure management
When This Guide Applies
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🏢 New Office
Building a secure environment from the beginning.
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📈 Business Growth
Supporting additional users, offices, and services.
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🔄 Infrastructure Modernization
Replacing aging systems and improving architecture.
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🛡 Security Improvements
Strengthening identity, network, and data protection.
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📋 Compliance Preparation
Preparing documentation for audits or governance requirements.
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🤝 Technical Due Diligence
Understanding the current environment before future projects or acquisitions.
Need an Independent Architecture Review?
Every environment is different.
Zconnect helps organizations review existing infrastructure, identify architectural improvements, and provide practical recommendations across identity, networking, Microsoft 365, data protection, and operational security.