---
title: "Supported RADIUS protocols"
slug: "oas-ag-supported-radius-protocols-3-28"
updated: 2025-07-04T10:04:19Z
published: 2025-07-07T13:30:12Z
canonical: "docs.onespan.com/oas-ag-supported-radius-protocols-3-28"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.onespan.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported RADIUS protocols

OneSpan Authentication Server supports the following RADIUS protocols:

- PAP
- CHAP
- MSCHAP with MPPE (Microsoft Point-to-Point Encryption)
- MSCHAPv2 with MPPE
- EAP-TTLSv0/PAP
- PEAPv0/EAP-GTC
- PEAPv0/EAP-MSCHAPv2
- PEAPv1/EAP-GTC
- PEAPv1/EAP-MSCHAPv2

Some protocols do not support all authentication features of OneSpan Authentication Server (see [Limitations of RADIUS support in OneSpan Authentication Server](/sec/docs/oas-ag-limitations-of-radius-support-in-onespan-authentication-server-3-28)). For more information about logon password options, see [Logon permutations](/sec/docs/oas-aref-logon-permutations-3-28).