Perimeter 81

What is Perimeter 81 and why do we need it?

Under the old model, your office network was protected and there was a clear network boundary. Everything within that boundary was protected by a firewall and trusted. Everything outside the boundary was considered untrusted.

Remote Desktop extended access to your data beyond the network boundary by providing remote access to a PC or server located within the boundary. Access to the remote desktop was restricted by a combination of password and connecting location.

The modern workplace removes the concept of a secure network boundary. This is called a “Zero Trust Network”. Access to company data is granted on approved devices that meet compliance policies. This functionality is included with Microsoft 365 and delivered via Windows Hello for Business, OneDrive and Azure AD Conditional Access. This provides many benefits:

Exceeding Cyber Essentials

For basic organisations that want to meet Cyber Essentials, the Microsoft-only solution is sufficient. However, Perimeter 81 is required:

  1. When direct network line-of-sight is required for legacy services that do not offer modern Cloud access with Single Sign-On.
  2. When an organisation wants additional privacy and security for their staff, for example to avoid DNS spoofing or monitoring on untrusted Public Wi-Fi.
  3. When an organisation that has two separate firewalls from two separate vendors to protect their boundary wants to extend dual-vendor protection to their host based firewalls.

Forrester New Wave Leader 2021

Why Perimeter 81?

ICT9 LTD have evaluated several managed VPN solutions and recommend Perimeter 81 for the following reasons: