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What is RADIUS?

Whenever large companies need network authentication, RADIUS (RFC 2865) is the protocol of choice. RADIUS is an AAA protocol which stands for authentication, authorization and accounting. It is therefore best suited for controlling access to networks like WiFi, Wired (802.1X, EAP) or VPN. The protocol was developed by Livingston Enterprises, Inc. in 1991 and is now part of the IETF standards.

What is RadSec?

RADIUS is an efficient protocol for authentication purposes that uses the UDP transport protocol. Nonetheless, some traffic will not be encrypted during transport. This can be avoided by using RadSec (RFC 6614) which is transported over TCP and completely encapsulated within a TLS tunnel.

Authentication Certificates

The easiest way to push device or user certificates to your clients is SCEPman, as it is super-easy to deploy and integrates seamlessly with Intune. You can also use your own on-premise PKI.
RADIUSaaS supports multiple CAs in parallel.


To proof revocation of certificates, our RADIUSaaS leverages OCSP.
A Certificate Revocation List (CRL) is currently not supported.

Our Service

Admin Portal

Each customer has access to their own personal instance through their own RADIUSaaS Admin Portal, which can be used for tasks such as creating users, changing allowed certificates, adding proxies, creating rules or performing troubleshooting using RADIUSaaS Insights.

RADIUS to RadSec Proxy

The service's internal RADIUS server only allows RadSec connections. If your WiFi infrastructure does not support RadSec, RADIUSaaS features a proxy functionality, which will establish a secure tunnel allowing you to use the service with traditional UDP.

Guests and IOT Devices

Some of your devices may not be able to receive certificates. Reasons could be that they are not managed by any policy provider/MDM system or they are simply technically not able to work with certificates. In those cases or guests scenarios, you can add users to your instance and restrict the access to a specific time frame, if needed. This allows you to authenticate printers, TVs or other devices with a single instance of the service.


RADIUSaaS can be used globally.
RADIUSaaS' core service can be deployed into datacenters in the following regions and countries:
  • Australia
  • European Union
  • United Kingdom
  • United States of America
RADIUS proxies can be deployed into datacenters on all continents.

Getting Started

Please follow the steps on the following page to get your clients ready authenticating with RADIUS-as-a-Service!