Perimeter 81 implementation: questions to plan first

Confirm the current product and support arrangement

This guide retains the Perimeter 81 name used in the original article. Check Point now presents the product as Check Point SASE, formerly Harmony SASE. Confirm the current platform, subscription, supported features, and migration requirements with the vendor. Product names in this guide do not establish a UX Genius vendor certification or partnership.

Why Businesses Are Moving to Perimeter 81

Traditional VPNs were designed for a different era, when employees sat in one office, connected to one network, and accessed resources through a single perimeter. Today's business reality is fundamentally different. Your team works from home, coffee shops, client sites, and co-working spaces. They use personal devices, cloud applications, and SaaS platforms. The old perimeter-based security model simply doesn't work anymore.

Perimeter 81, now part of the Harmony platform by Check Point, replaces legacy VPNs with Zero Trust Network Access (ZTNA), a modern approach that authenticates every user, validates every device, and restricts access to only the resources each user needs. The result is a security model that's more effective, easier to manage, and delivers a vastly better user experience than traditional VPNs.

What Is Zero Trust Network Access?

Zero Trust Network Access operates on a simple principle: never trust, always verify. Instead of granting broad network access to authenticated users (as VPNs do), ZTNA provides granular, identity-based access to specific applications and resources.

The key differences between ZTNA and traditional VPN:

• VPN: Authenticate once, get access to the entire network. Users see everything, even resources they don't need
• ZTNA: Authenticate continuously, get access only to approved resources. Users see only what they need, nothing more

This approach dramatically reduces the attack surface. If a user's credentials are compromised, the attacker can only access the specific applications that user is authorized for, not the entire network.

Key Features of Perimeter 81

Perimeter 81 delivers a comprehensive suite of network security capabilities designed for modern businesses:

Zero Trust Network Access

Identity-based access controls that verify users and devices before granting access to specific applications. No more broad network exposure, users connect only to what they need.

Cloud Firewall

A cloud-delivered firewall that protects your network without the cost and complexity of on-premises hardware. Cloud firewall scales automatically with your business and can be managed from a single dashboard.

Secure Web Gateway

Web filtering and malware protection that blocks access to malicious websites and prevents unauthorized data exfiltration. Policies can be customized by user group, location, and application.

Application-Aware Connectivity

Unlike traditional VPNs that create a tunnel to the entire network, Perimeter 81 creates individual tunnels to specific applications. This improves performance, reduces latency, and limits lateral movement for attackers.

Implementing Perimeter 81 in Your Organization

Successful Perimeter 81 implementation requires careful planning and execution. Use these planning steps to discuss a deployment with your chosen provider:

1. Discovery and planning: We map your current network architecture, identify all applications and resources, and define access policies by user role
2. Infrastructure setup: We configure Perimeter 81 gateways in the cloud or on-premises, depending on where your applications live
3. Policy configuration: We define granular access policies that give each user group access to exactly the resources they need
4. Client deployment: We roll out the Perimeter 81 client to your users' devices with minimal disruption
5. Testing and validation: We verify that all users can access their required resources and that unauthorized access is properly blocked
6. Monitoring and optimization: We continuously monitor the deployment for issues and optimize performance over time

Benefits Over Legacy VPN

Businesses that switch from traditional VPNs to Perimeter 81 consistently report significant improvements:

• Faster connections: Users connect to applications directly rather than routing all traffic through a central VPN gateway
• Better user experience: No more dropped connections, slow performance, or frustrating reconnection prompts
• Stronger security: Granular access controls and continuous authentication eliminate the broad network exposure of traditional VPNs
• Simpler management: A single cloud dashboard replaces complex on-premises VPN infrastructure
• Lower costs: Eliminate hardware VPN concentrators and reduce the IT overhead of managing VPN infrastructure

Discuss your remote access requirements

If you want to review a remote access change, discuss your current platform, applications, users, and support requirements with UX Genius. Our cybersecurity service overview explains the areas a project can address. Product-specific work needs an agreed scope.

Whether you need a full Perimeter 81 deployment or want to integrate it into your existing security stack, our team can help. Schedule a free consultation or call (703) 755-0014 to discuss your network security needs.

Frequently Asked Questions

What is Perimeter 81 and why should my business implement it?

Perimeter 81 is a Zero Trust Network Access platform (now part of Check Point Harmony) that replaces traditional VPNs with application-level access controls. Your business should implement it to reduce your attack surface, improve remote access performance, and meet modern security and compliance requirements.

How long does a Perimeter 81 implementation take?

A typical Perimeter 81 implementation takes two to four weeks, including assessment, policy design, gateway deployment, user provisioning, and testing. Complex environments with many applications and compliance requirements may take longer.

What are the key steps in implementing Perimeter 81?

Key steps include access mapping (documenting who needs access to what), identity provider integration, policy configuration, gateway deployment, device posture configuration, user provisioning, parallel testing alongside your current VPN, and phased rollout.

Can UX Genius help with Perimeter 81 implementation?

Evaluate the proposed work against your own systems and requirements. Ask for evidence behind any experience, credential, service result, or compliance claim. Agree on the responsibilities and acceptance checks in writing.