What is a Secure Virtual Appliance?
The Secure Virtual Appliance (SVA) is the deployment unit of Total Access Control. It is a purpose-built virtual machine that acts as a reverse proxy — sitting between your users and your applications, intercepting every access request, and enforcing policy before any traffic reaches its destination.
Each SVA is single-tenant and fully dedicated to your organisation. There is no shared infrastructure, no multi-tenant data co-mingling, and no dependency on a third-party cloud. The SVA runs wherever you need it — on-premises, in a private cloud, in AWS, Azure, GCP, or any hybrid combination.
A single SVA can be operational in hours. Multiple SVAs form a load-balanced array. Arrays across global locations form a global deployment — all managed from one console.
SVA Core Properties
The Access Request Flow
Every access request passes through the same enforcement pipeline before any connection to a protected resource is established.
From Single SVA to Global Array
TAC scales linearly as your organisation grows — without architectural changes or additional licensing complexity.
Deploy Anywhere. Control Everything.
On-Premises
Deploy within your own data centre on VMware, Hyper-V, KVM, or bare metal. Full air-gap capability for classified or OT environments.
Private Cloud
Deploy in your private cloud environment with your existing orchestration and networking. Maintains single-tenant isolation.
Public Cloud
Deploy in AWS, Azure, or GCP as a dedicated VM in your own account. Your cloud tenancy — not PortSys infrastructure.
Hybrid
Mix on-premises and cloud SVAs in one deployment. One console, one policy engine across all locations.
SVA System Requirements
Ready to Deploy TAC?
Our engineers will walk you through deployment — from single SVA to global array.