---
title: "Audit system"
slug: "oas-av-csh-audit-system-3-28"
updated: 2025-07-04T10:04:37Z
published: 2025-07-07T14:09:26Z
canonical: "docs.onespan.com/oas-av-csh-audit-system-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.

# Audit system

The OneSpan Authentication Server audit system enables you to audit the operations that OneSpan Authentication Server performs and provides high-level details about these operations. The audit system consists of a number of auditing modules that save audit messages to a specific format (e.g. text file or database), and the Audit Viewer application, which can open, display, and filter audit messages from various sources.

Audit messages are primarily generated by OneSpan Authentication Server and include RADIUS accounting data. These messages may be recorded by a number of different methods:

- Windows Event Log (to be viewed in the Event Viewer)
- Syslog (in Linux environments)
- Text file
- ODBC-compliant database