AI-Era Access Control
Your workforce just doubled.
Half of it isn't human.
AI agents are calling your APIs, querying your databases, and acting on behalf of your users — right now. Total Access Control (TAC) by PortSys is the only reverse-proxy platform that governs every identity — human and machine — through a single, policy-driven engine.
ENTERPRISE STANDARD • ZERO TRUST VERIFIED • NO RIP & REPLACE
74%
of enterprises
are deploying AI agents
within two years
68%
cannot distinguish
agent activity from humans
in their logs
21%
have a mature model
for governing
autonomous AI agents
Trusted BY THE MOST DEMANDING, security-first organizations worldwide
Government, healthcare, finance, energy, manufacturing and critical infrastructure teams rely on TAC to secure access where it matters most.One Platform, Every Identity
Humans Log In. Agents Call APIs. TAC Governs Both.
Traditional access tools were built for humans clicking through browsers. Your environment now includes AI agents calling APIs, querying databases, and acting autonomously. TAC enforces policy across both — with the same rigor, the same audit trail, and the same reverse-proxy architecture.
Human Access Control
Every session. Every device. Verified.
- Identity and device validation on every session
- SSO portal with adaptive, risk-based authentication
- BYOD posture assessment and compliance checks
- Step-up MFA triggered by risk signals
- Complete audit trail for every user action
AI Agent Access Control
Every API call. Every agent. Governed.
- Agent identity verification via certificates and tokens
- Per-action policy enforcement on every API call
- Continuous authorization with scope drift detection
- Blast-radius confinement per agent session
- Full agent activity logging with intent attribution
One Reverse Proxy. One Policy Engine. Total Control.
Whether the request comes from a browser or a bot, TAC applies the same Zero Trust enforcement. No bolted-on modules. No separate agent security products.
Start Here
Where would you like to start?
TAC serves CISOs, IT teams, and security architects. Each has a different path to the same outcome.
🔒 CISOs & Executives
Board-level risk & AI governance
Your board is asking about AI risk. Your auditors want proof of governance. TAC gives you the policy engine, audit trail, and compliance alignment to answer both — without deploying another point solution.
Understand the AI Access Risk →⚙️ IT Directors & Infrastructure
Architecture, integrations & deployment
TAC deploys as a reverse proxy in front of your existing infrastructure. No changes to Active Directory, no changes to your apps, no forklift upgrade. Zero Trust access control in days — not months.
See How TAC Fits Your Infrastructure →🛡️ Security Architects & Engineers
Technical depth, specs & compliance
TAC is a reverse proxy with a granular policy engine evaluating identity, device posture, location, certificates, and patch level on every request. No cached credentials. No implicit trust. Every request earns its own authorization.
Get the Technical Specs →Architecture First
Why Architecture Matters
Other vendors bolt agent security onto existing identity tools. TAC was built as the control plane — a reverse proxy that sits between every identity and every resource.
Human Users
Every browser, mobile login, and SSO request
Passes through TAC for identity, device, and posture validation before reaching any application.
TAC Reverse Proxy
The single enforcement point for all access
AI-driven policy engine evaluates every request in real time. No direct exposure. No implicit trust. No blind spots.
AI Agents
Every API call, query, and invocation
Authenticated, authorized, and audited through the same proxy with the same rigor as human access.
Why Total Access Control
Zero-Trust Enforcement
Never trust, always verify — for humans and machines alike. TAC evaluates identity, device posture, location, certificates, and patch level on every single request. No session tokens grant permanent access.
Stealth Infrastructure
Your applications are invisible to the internet. TAC’s reverse proxy is the only entry point. No exposed ports. No DNS records pointing to application servers. Your attack surface drops to near zero.
Unified Policy Control
One policy engine governs every access decision. Define rules once — by user, device, location, time, or agent identity — and TAC enforces them consistently across every application, API, and resource.
Compliance & Regulatory
TAC Aligns With the Standards Your Auditors Require
From government agencies to financial institutions to healthcare systems, TAC maps directly to the compliance frameworks your organization must meet.
Federal & Defense
NSA Zero Trust Guidelines
Direct implementation of NSA’s seven Zero Trust pillars
Federal Agencies
NIST SP 800-207 and NIST SP 800-171 CUI
Both frameworks covered.
Law Enforcement
FBI CJIS 5.9
Meets CJIS MFA, access control, and audit requirements out of the box
Federal Civilian
CISA TIC 3.0
Aligns with CISA’s updated Trusted Internet Connection guidance
Civilian
SOC2
All five Trust Service Criteria – Security, Availability, Processing Integrity, Confidentiality, Privacy.
Proven Results
Real Organizations. Proven at Scale.
TAC delivers measurable results — without touching your existing authentication, network, or application infrastructure.
Global Consulting & Technology • 35 Countries
ZS Associates
Challenge: 18,000 employees and contractors across 35 countries needed frictionless, secure access to hundreds of applications spanning hybrid infrastructure, HIPAA-regulated environments, and Microsoft 365 — while meeting strict data protection requirements. Firewall-stacking and legacy VPN couldn’t scale.
Outcome: 8 TAC instances deployed globally — including behind China’s Great Firewall. 1,300+ federated applications secured. Legacy VPN sprawl eliminated. Zero additional cost for MFA.
“TAC allows us to give more flexibility to our users. They can work from anywhere, safe in the knowledge that TAC actually strengthens security.”
— IT Manager, Enterprise Systems
Financial Services • United States
Portfolio Management Firm
Challenge: Microsoft ended support for their Unified Access Gateway. The firm needed a replacement supporting all device types, reducing VPN hardware costs, and maintaining strict security for 160 employees, clients, and partners.
Outcome: Eliminated $1,000+ per-device VPN hardware. Saved over $100,000 annually vs. competitive alternatives. Expanded secure remote access from 15 to 35 employees. 160 total users on any device.
“TAC is easier, more secure, and much more cost-effective compared to alternative solutions on the market today.”
— Senior Systems Engineer
| Capability | TAC by PortSys | Cisco Duo | Okta | Zscaler | Microsoft Entra |
|---|---|---|---|---|---|
| AI Agent Access Control | ★★★★★ | ★★☆☆☆ | ★★★☆☆ | ★★☆☆☆ | ★★☆☆☆ |
| Zero Trust Policy Depth | ★★★★★ | ★★★☆☆ | ★★★☆☆ | ★★★★☆ | ★★★☆☆ |
| Reverse-Proxy Enforcement | ★★★★★ | ★☆☆☆☆ | ★☆☆☆☆ | ★★★☆☆ | ★★☆☆☆ |
| Device Trust & Posture | ★★★★★ | ★★★★☆ | ★★★☆☆ | ★★★☆☆ | ★★★★☆ |
| Data Leakage Prevention | ★★★★★ | ★★☆☆☆ | ★★☆☆☆ | ★★★★☆ | ★★☆☆☆ |
| Audit Visibility | ★★★★★ | ★★★☆☆ | ★★★★☆ | ★★★☆☆ | ★★★★☆ |
| No Rip & Replace Deploy | ★★★★★ | ★★★☆☆ | ★★☆☆☆ | ★★★☆☆ | ★★★☆☆ |
Ratings reflect PortSys assessment based on publicly available documentation as of 2026.
Recognized by Leading Industry Analysts
Omdia
On the Radar: Zero Trust Access
PortSys recognized as an emerging innovator in Zero Trust Access — a more efficient and secure alternative to VPNs for enterprise remote access.
KuppingerCole
Executive View: Total Access Control
TAC evaluated as a capable Zero Trust Access platform for enterprises managing both contemporary cloud applications and legacy on-premises systems.
Download the KuppingerCole Report →Ready to Control Every Identity
in Your Enterprise?
TAC deploys in days. No infrastructure changes required. Book a session with a PortSys engineer and see exactly how it fits your environment.