Securing Your Remote Workforce: Beyond VPN

During the pandemic, organizations rushed to deploy VPNs for remote workers. It was the fastest way to provide access to internal resources. Four years later, most organizations still rely on this same architecture, despite its growing list of security, performance, and operational problems.

Why VPN Is Not The Answer

Security Theater
A VPN extends the corporate network to the employee's home. If the employee's device is compromised, the attacker has direct network access to internal resources. VPNs provide no protection against compromised endpoints.

The 2024 Okta breach demonstrated that even VPNs managed by security companies are vulnerable. Attackers compromised a third-party customer support agent's laptop and used the VPN access to browse Okta's internal systems.

Performance Degradation
All traffic routes through the corporate data center, even traffic to SaaS applications like Office 365 or Salesforce. This adds latency and bandwidth costs. Employees working from regions far from the data center experience slow application performance.

Operational Overhead
VPN concentrators need maintenance, capacity planning, and patching. Certificate management for client and server certificates adds complexity. Troubleshooting VPN connectivity issues consumes significant IT support time.

The Better Approach

Zero Trust Network Access (ZTNA)
ZTNA reverses the VPN model. Instead of placing the user on the network, ZTNA creates a direct, encrypted connection between the user and the specific application they need. The user never accesses the network, only the application.

This approach eliminates lateral movement risk. A compromised ZTNA session gives the attacker access to only one application, not the entire network.

Application-Focused Security
Instead of securing the network, secure the application. Every application should have strong authentication, granular authorization, and comprehensive audit logging regardless of where the user is connecting from.

Implement SSO with MFA for every application. Use SCIM provisioning to automate user lifecycle management. Apply role-based access controls within each application.

Endpoint-First Security
The endpoint is where breaches happen. Invest in endpoint detection and response (EDR), device compliance checking, and disk encryption. Ensure devices are patched before they can access corporate resources.

Conditional access policies can block devices that do not meet security requirements. If an endpoint lacks the latest patches or has disabled antivirus, it should not be allowed to authenticate.

Practical Implementation

Migration from VPN to a modern remote access model does not need to be a Big Bang project. Start with the highest-risk applications, implement ZTNA, prove the model, and expand gradually. Most organizations can complete the transition within six months while running both models in parallel.

The shift from network-centric to identity-centric security is inevitable. VPNs served a purpose, but that purpose was temporary.