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Reference infrastructure path

Every layer below is designed, hardened and documented as part of a delivery — from carrier edge through to monitoring and recovery.

Reference infrastructure path

Select a layer for detail

InternetFirewallSecure AccessPBX / Cloud / VirtualizationApplicationsEndpointBackup / MonitoringAI Chatbot

Internet

Public transit into the environment: carrier SIP, remote users, customer traffic and inbound mail.

Firewall

Policy enforcement point between untrusted transit and internal service zones.

  • pfSense / OPNsense
  • Fortinet
  • MikroTik
  • Cloud security groups

VPN / Secure Access

Authenticated path for administrators, remote agents and site-to-site connectivity.

  • WireGuard
  • IPsec
  • OpenVPN
  • Zero-trust access

PBX / Cloud / Virtualization

The service core: telephony, hypervisors, cloud workloads and business applications.

Applications

Corporate email, public websites, AI chatbot channels, approved knowledge and line-of-business applications.

Endpoint

Workstations, laptops and servers where users open mail, browse and run business software — the layer most incidents actually start on.

Backup / Monitoring

Recovery capability and operational visibility across every layer above.

AI Chatbot Integration

Website and WhatsApp conversations routed through controlled AI orchestration to approved knowledge, business systems and human support.

01

Internet

Public transit into the environment: carrier SIP, remote users, customer traffic and inbound mail.

Security considerations
Exposed surface is enumerated and reduced. Authoritative DNS is locked and monitored, outbound resolution is filtered, and public services present valid, automatically renewed certificates.
Deployment considerations
Redundant circuits where availability requires it, with documented failover behaviour, TTL strategy and tested cutover.
02

Firewall

Policy enforcement point between untrusted transit and internal service zones.

  • pfSense / OPNsense
  • Fortinet
  • MikroTik
  • Cloud security groups
Security considerations
Default-deny rule base, segmentation between voice, server and user zones, logging to a retained destination.
Deployment considerations
Rule bases are written from a service inventory and reviewed on change, not accumulated ad hoc.
03

VPN / Secure Access

Authenticated path for administrators, remote agents and site-to-site connectivity.

  • WireGuard
  • IPsec
  • OpenVPN
  • Zero-trust access
Security considerations
MFA on administrative access, per-role routing, short-lived credentials and revocation procedure.
Deployment considerations
Access design is mapped to roles before rollout; management interfaces are never published directly.
04

PBX / Cloud / Virtualization

The service core: telephony, hypervisors, cloud workloads and business applications.

Security considerations
Hardened baselines, TLS/SRTP for voice, patch cadence, isolated management network and least-privilege service accounts.
Deployment considerations
Sized against measured concurrency and workload profile, with capacity headroom and a documented scale path.
05

Applications

Corporate email, public websites, AI chatbot channels, approved knowledge and line-of-business applications.

Security considerations
Identity governance, conditional access, scoped chatbot tools, approved knowledge boundaries, privacy controls, staged mail authentication and audited administrative roles.
Deployment considerations
Migrations and releases run with a rehearsed cutover and rollback point. AI Chatbot Integration connects website and WhatsApp channels through controlled orchestration to approved knowledge, CRM, helpdesk and business applications, with human handoff and monitoring. AI features use third-party services; no proprietary model is claimed.
06

AI Chatbot Integration

Website and WhatsApp conversations routed through controlled AI orchestration to approved knowledge, business systems and human support.

Security considerations
Server-side credentials, tool allowlists, consent-aware data handling, PII minimisation, retention limits and confirmation before consequential actions.
Deployment considerations
Conversation design, grounding and integrations are tested against approved scenarios before launch; failures and uncertain answers route to a named human owner.
07

Endpoint

Workstations, laptops and servers where users open mail, browse and run business software — the layer most incidents actually start on.

Security considerations
Attack-surface reduction, application and device control, disk encryption and host isolation on detection.
Deployment considerations
Rules are piloted in audit mode per device group, then enforced once exceptions are known and documented.

Scope the work before you commit budget

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