Built as a simpler alternative to Perimeter 81
MSPs • Zero Trust Browser-Based Access

Why MSPs are switching from Perimeter 81 to DefensX.

Perimeter 81 offers modern SASE features but brings high cost, complex onboarding, and agent-heavy deployments that create support overhead for MSPs. DefensX takes a simpler approach delivering Zero Trust access, browser isolation, and DNS security with no agents, no tunnels, and predictable pricing for MSP environments.

Why Perimeter 81 is challenging for MSPs

The platform offers many features, but MSPs pay the price in complexity and support overhead.

Heavy reliance on endpoint agents

Agent Complexity
  • ● Agent updates break connectivity.
  • ● Conflicts with RMM/AV/EDR products.
  • ● High support load on mixed-OS fleets.
  • ● BYOD onboarding still painful.

Expensive + not MSP-friendly

Cost & Ops
  • ● Higher per-user costs than MSP budgets allow.
  • ● Multi-tenant workflows require too many clicks.
  • ● Feature overlap with existing MSP tools.
  • ● Hard to justify for SMB clients.

How DefensX improves Perimeter 81 environments

Simpler. Faster. More MSP-aligned.

Agentless Zero Trust access

DefensX ZTNA
  • ● No agents to manage or deploy.
  • ● Users never join the network app-level access only.
  • ● Eliminates BYOD & contractor headaches.
  • ● Zero configuration on endpoints.

Designed for MSP pricing + operations

MSP Ready
  • ● Predictable per-user cost.
  • ● Multi-tenant management built-in.
  • ● One-click onboarding for clients.
  • ● No infrastructure or gateways to deploy.

Perimeter 81 vs DefensX at a glance

Capability Perimeter 81 DefensX
Access model Agent-based ZTNA + VPN 100% agentless Zero Trust
Client footprint Heavy endpoint agent None (browser isolation)
Deployment time Days or weeks Hours
MSP multi-tenancy Limited workflow efficiency Built for MSPs
Best fit Mid/large businesses MSP + SMB/SME

What switching from Perimeter 81 means for your MSP

Less complexity. Lower cost. Happier users.

MSPs simplify operations and reduce support load by adopting a lightweight, browser-based approach to Zero Trust.

  • Identify Perimeter 81 features actively used by each client.
  • Map to equivalent DefensX policies (ZTNA, DNS filtering, isolation).
  • Run a 2-week pilot with targeted user groups.
  • Roll out tenant by tenant.
  • Retire Perimeter 81 licenses on completion.

Start reducing agent noise and support overhead.

FAQ: Replacing Perimeter 81 with DefensX

“Does DefensX replace the Perimeter 81 agent?”
Yes. DefensX is 100% agentless — Zero Trust access and web protection work through an isolated browser environment with no endpoint installation.
“Can we migrate gradually?”
Absolutely. Most MSPs run DefensX and Perimeter 81 side-by-side during transition and deprecate agent-based access once testing completes.
“What about cost differences?”
MSPs typically see 20–40% cost reduction because DefensX eliminates agents, gateways, tunneling infrastructure, and advanced feature bundles.