Appgate
Zero Trust Network Access · ZTNA · SDP · Direct-Routed · DoD Authorized

Appgate

The Secure Access Company — purpose-built Zero Trust.

Appgate SDP is the industry's most comprehensive universal ZTNA solution, built on a direct-routed architecture that avoids the limitations of cloud-routed proxy alternatives. Cloaked infrastructure, identity-centric access, patented microsegmentation — for every user, device, and workload across cloud, on-premises, and hybrid environments.

Forrester ZTNA LeaderDoD Authorized to OperateNIST SP800-207 CollaboratorDirect-Routed ArchitectureUniversal ZTNA — All Protocols650+ Organizations Worldwide
650+
Organizations protected worldwide across Fortune 500 and government
4.8★
Gartner Peer Insights rating from verified enterprise deployments
83%
Customers saw significant reduction in security incidents (Nemertes 2023)
87%
Average decrease in time to modify access privileges

Six Core Zero Trust Design Tenets

Appgate SDP was built from first principles on Zero Trust — not adapted from a legacy VPN architecture. Every capability is an expression of these six design tenets.

Cloaked Infrastructure
Single Packet Authorization (SPA) makes the entire network invisible to unauthorized users — no open ports, no scannable attack surface, no response to probes.
Attribute-Based Access
Multi-dimensional identity profiles built from user, device, application, and contextual risk — access decisions based on who you are, not what IP address you're coming from.
Least Privilege Microsegmentation
Patented multi-tunneling creates just-in-time "segments of one" with concurrent connections — users access only what they need, lateral movement blocked at the connection level.
Dynamic Live Entitlements
Context-sensitive policies that automatically adjust in near-real time based on user behavior, device posture, and risk signals — replacing static firewall rules with adaptive access.
API-First Architecture
100% API-first design integrates with any security ecosystem — IDS/IPS, EDR, SIEM, UEBA, identity providers (OIDC, SAML, LDAP, RADIUS), and business systems without vendor lock-in.
Stateless Distributed Architecture
Stateless design enables nearly limitless horizontal scaling — no bottlenecks, no single points of failure, consistent performance across global enterprise deployments.
Architectural Differentiator

Direct-Routed vs. Cloud-Routed ZTNA

Most ZTNA solutions route all traffic through the vendor's cloud — adding latency, limiting protocol support, and restricting legacy and IoT/OT use cases. Appgate SDP's direct-routed architecture connects users to resources without a vendor cloud intermediary, giving organizations full control, all-protocol support, and consistent low-latency performance.

Cloud Security Alliance Recognition
The CSA SDP Reference Architecture identifies direct-routed ZTNA as more stringently aligned to Zero Trust principles than cloud-routed proxy alternatives — an independent industry validation of the architectural choice.
DimensionDirect-Routed (Appgate)Cloud-Routed ZTNA
Traffic routingDirect to resource — no hairpinningAll traffic via vendor cloud proxy
LatencyLow — no detour through vendor cloudAdded latency from proxy hop
Protocol supportAll protocols — not limited to HTTPSWeb apps only (HTTPS) in most cases
Legacy appsFull support — pass-through layerOften limited or unavailable
IoT / OTSupported with M2M connectionsRarely supported
Air-gapped deployIsolated deployment model availableNot possible — requires cloud connectivity
Traffic controlOrganization owns the pathVendor controls routing
CSA alignmentSDP Reference Architecture compliantPartial alignment
Infrastructure Cloaking

Single Packet Authorization — Make the Network Invisible

VPN concentrators are publicly visible — scanners and attackers can probe them, enumerate versions, and target known vulnerabilities before a user ever authenticates. Appgate SDP's Single Packet Authorization makes this structurally impossible: all infrastructure sends no response to unauthorized connection attempts. There is nothing to scan, nothing to probe, and nothing to attack.

No open listening ports
All ports cloaked — unauthorized connection attempts receive no response.
No scannable attack surface
Automated attack tools and port scanners see nothing — infrastructure is invisible.
Authentication before connection
SPA validates identity before any network path opens — unlike VPN which authenticates after connecting.
Single authorized packet
One cryptographically authenticated packet opens a microsegmented connection for the legitimate user.

Universal ZTNA — All Use Cases, One Platform

Where most ZTNA solutions cover one scenario, Appgate SDP secures every connection type across the enterprise with a unified policy model.

Remote & Third-Party Access
Identity-centric access for remote workers, contractors, vendors, and partners — without VPN overprivilege. Patented multi-tunneling enables concurrent access to multiple cloud and on-premises resources without switching connections.
VPN Replacement & Migration
Proven 5-step migration framework replacing legacy VPNs — open ports, IP-centric authentication, lateral movement risk, and policy sprawl replaced with attribute-based least-privilege access. Phased approach minimizes disruption.
Cloud Migration & Multi-Cloud
Automatically scales with dynamic IP resolution across multi-cloud environments (AWS, Azure, GCP). Auto-detection of new cloud instances with automatic access adjustment — Zero Trust for cloud-native architectures.
Secure DevOps Access
Concurrent access to multiple cloud environments with the bandwidth developers need. Terraform and GitHub SDP operator for infrastructure-as-code deployment. Full API integration with CI/CD and ITSM workflows.
IoT & OT Security
Zero Trust for machine-to-machine (M2M) connections, IoT devices, and OT/ICS environments. Server-initiated connection support for resource-to-resource security. Prevents lateral movement if a device is compromised.
Network Transformation
Unified policy across all users, networks, and workloads — retiring VPN concentrators, NACs, and complex firewall rule sets. Eliminates expensive private networks (WAN, MPLS) with a software-defined security model.
Legacy Application Security
Applies MFA and granular least-privilege Zero Trust controls to legacy applications without modification — securing mission-critical systems that cannot be refactored for modern IAM platforms.
Compliance & Regulatory Controls
Compensating controls for financial services, healthcare, and government regulations. Full audit trails for identity-centric access logging. NIST SP800-207 aligned. DoD Reference Architecture compliant.

Appgate SDP vs. Alternatives

DimensionLegacy VPNAppgate SDP
Open portsPublicly visible, scannable, attackableSPA cloaking — invisible to unauthorized users
Authentication modelIP-based — wide network trust after loginIdentity-centric — attribute-based per-resource
Lateral movementUnrestricted once inside the perimeterPatented multi-tunneling microsegmentation
Access scopeOverprivileged — entire network segmentsLeast privilege — specific resource, specific context
Policy managementStatic rules — manual updates requiredLive Entitlements — dynamic, automatic adjustment
Protocol supportAll (but with risk)All — not limited to HTTPS like cloud-routed ZTNA
Deployment complexityConcentrators, NAC, firewall rules, ACLsSoftware-defined — retire legacy hardware

5-Step VPN to ZTNA Migration

A proven phased framework — start with high-risk use cases, scale to full enterprise ZTNA without business disruption.

1
Assess
Map current VPN landscape — users, applications, access patterns, and policy complexity.
2
Roadmap
Develop ZTNA transition plan prioritizing high-risk use cases: remote contractors, legacy apps, cloud access.
3
Select
Evaluate deployment model (cloud-hosted, self-hosted, isolated) and integration requirements.
4
Pilot
Implement first use case — typically remote access for a defined user group — with measurable outcomes.
5
Scale
Expand across all users, on-premises resources, multi-cloud environments, and IoT/OT workloads.

Three Deployment Models

Cloud-Hosted
Appgate manages Controllers and platform infrastructure — minimum administrative burden. Customer controls Gateway placement and policy. Fastest time to value.
Self-Hosted
Customer hosts all components with full access to Appgate platform services. Maximum control over infrastructure and data sovereignty while retaining platform features.
Isolated
Fully air-gapped deployment for DoD, classified environments, and organizations with strict data residency mandates. No connectivity to Appgate infrastructure required.

Analyst & Government Validation

ForresterNew Wave ZTNA Leader
Positioned highest for current offering in Forrester New Wave: Zero Trust Network Access (Q3 2021)
Gartner4.8 / 5 Stars
Peer Insights rating from verified enterprise deployments — Representative Vendor, ZTNA Market Guide
NISTSP800-207 Collaborator
Active collaborator on NIST Zero Trust Architecture project — validated alignment to federal ZTA standards
U.S. DoDAuthorized to Operate
ATO with CNAP alignment and DoD Zero Trust Reference Architecture recognition
CSASDP Reference Architecture
Cloud Security Alliance alignment — direct-routed architecture meets stringent CSA ZT guidelines

Proven ROI — Nemertes 2023 Study

83%
Customers saw significant reduction in security incidents (Nemertes 2023)
87%
Average decrease in time to modify access privileges
32%
Average reduction in hands-on staff time to manage access
55%
Average decrease in security tools needed for on-prem access
67%
Decrease in connectivity costs (reported by global systems integrator)
6%
Decrease in gross IT spend (reported by IT services company)

Key Verticals

Financial Services
FINRA-scale compliance controls, granular audit trails, and least-privilege access for trading systems, financial data, and third-party vendor connections — aligned to SEC and financial regulatory requirements.
Government & Defense
DoD ATO, CNAP alignment, NIST SP800-207 compliance, and isolated deployment model for classified and air-gapped environments. Validated for federal civilian and defense deployments.
Healthcare
HIPAA-compliant access controls for EHR systems, medical devices, and clinical workloads. Legacy application security extends Zero Trust to systems that cannot support modern IAM. Full audit trail for PHI access.
Energy & Oil / Gas
OT/ICS security with Zero Trust applied to operational technology — preventing lateral movement from IT to OT networks. Remote access for engineers and contractors with identity-centric microsegmentation.
Technology & MSPs
Secure multi-tenant DevOps access, concurrent cloud environment connections, and API-first integration for technology companies managing complex distributed infrastructure and multiple customer environments.
Any Enterprise with Hybrid Infrastructure
Organizations with mixed cloud, on-premises, legacy, and SaaS environments — where a single unified Zero Trust policy model replaces the patchwork of VPNs, NACs, and firewall rules accumulated over time.

Why Appgate

Direct-Routed Architecture — Full Control, No Hairpinning, All Protocols
The defining architectural choice in Appgate SDP is direct routing: traffic goes from user to resource without detouring through a vendor cloud proxy. Most ZTNA solutions on the market are cloud-routed — they insert the vendor's cloud as a mandatory transit point, limiting protocol support to HTTPS, adding latency from the proxy hop, and creating unpredictable pricing based on cloud traffic volumes. Appgate SDP's direct-routed model supports all protocols, enables IoT/OT and legacy application security, allows air-gapped isolated deployments, and keeps the organization in full control of how data traverses its network. The Cloud Security Alliance explicitly identifies direct-routed ZTNA as more stringently aligned to Zero Trust principles.
Universal ZTNA — Every Use Case on One Platform
Many ZTNA solutions secure one thing well — remote access to web applications — and require separate tools for on-premises, cloud-native, legacy app, IoT, OT, and M2M scenarios. Appgate SDP's unified policy model applies the same Zero Trust principles to every connection type: remote workers, in-office users, third-party contractors, DevOps engineers, IoT sensors, OT controllers, and resource-to-resource connections. This consolidation eliminates the 'ZTNA plus other tools' architecture that creates policy gaps at the intersections of security tools.
Single Packet Authorization — Network Invisibility as a Security Control
VPN security depends on authentication before granting access — but the VPN concentrator itself remains visible and scannable on the public internet, creating an attack surface before any authentication occurs. Appgate SDP's Single Packet Authorization makes this problem structurally impossible: all infrastructure is invisible to unauthorized users before any connection attempt. Scanning tools, automated attack frameworks, and human attackers receive no response from Appgate-protected resources. There is nothing to probe, nothing to attack, and no indication that a resource even exists.
Patented Multi-Tunneling — Least Privilege Without Productivity Loss
A common critique of Zero Trust and microsegmentation is that least-privilege access creates friction for users who need to access distributed resources. Traditional VPNs allow full network access after one login — convenient but insecure. Appgate SDP's patented multi-tunneling technology creates simultaneous, concurrent 'segments of one' to multiple specific resources without switching connections. A developer can access a cloud development environment, an on-premises database, and a SaaS tool simultaneously — each via a separate microsegmented tunnel, each with just-in-time privilege — with no more friction than a single VPN connection.
Government-Validated for the Most Demanding Security Requirements
Appgate SDP's government credentials are substantive, not marketing: DoD Authorization to Operate (not just a compliance checkbox — a formal security assessment), CNAP alignment (DoD's Comply-to-Connect Network Access Policy), DoD Zero Trust Reference Architecture alignment, and active collaboration on NIST SP800-207 (the federal government's definitive Zero Trust framework document). For enterprises in financial services, healthcare, defense industrial base, and regulated industries that need to demonstrate alignment with federal security standards, Appgate SDP's government validation carries evidentiary weight that analyst reports alone cannot provide.
Proven ROI — Independent Research Quantifies Financial and Operational Impact
Appgate's ROI claims are not vendor-produced estimates — they are from a Nemertes 2023 independent research study covering actual customer deployments. 83% of customers saw significant reduction in security incidents. 87% average decrease in time to modify access privileges — a critical operational metric for organizations managing dynamic workforces and contractor relationships. 32% reduction in hands-on staff time for access management. A global systems integrator reported 67% decrease in connectivity costs from retiring expensive private network infrastructure. These are structural cost and risk reductions, not productivity improvements that are difficult to measure.

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Frequently Asked Questions

Evaluate Appgate SDP for your Zero Trust program

Fibi evaluates Appgate alongside other ZTNA and secure access providers to match you with the right architecture for your environment. Our advisory is funded by the provider — no cost to you.