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The Open Source Physics Project is supported by NSF DUE-0442581.

Statistical and Thermal Physics 2nd Ed. Programs Documents

radiusdesk-2022-a1.ova

This material has 5 associated documents. Select a document title to view a document's information.

Main Document

radiusdesk-2022-a1.ova Statistical and Thermal Physics (STP) Applications 

Radiusdesk-2022-a1.ova 🎁 Reliable

Do not use the default radiusdesk-2022-a1.ova in production without these steps:


The .ova (Open Virtual Appliance) extension signifies that this is a single-file distribution of a virtual machine (VM).

In an era of cloud-based access control (JumpCloud, Cisco Meraki cloud auth), the on-premise RADIUS server still holds immense value. No monthly fees, full data ownership, and offline operation are critical for many industries.

The radiusdesk-2022-a1.ova file represents a milestone where open-source RADIUS management became truly accessible. It reduces a week-long integration project to a 10-minute download and import. Whether you are a network admin at a school, a WISP serving a rural community, or a hotel owner wanting to monetize Wi-Fi, this OVA gives you enterprise-grade features at zero software cost. radiusdesk-2022-a1.ova

Final Recommendation: Download radiusdesk-2022-a1.ova, spin it up on a VMware or VirtualBox test lab, connect a single access point, and run a few test authentications. Within an hour, you will see why thousands of networks worldwide rely on this quiet but powerful appliance.


RADIUSdesk serves as a modern, user-friendly front-end for the FreeRADIUS daemon. Without a GUI, managing FreeRADIUS requires editing complex text configuration files. RADIUSdesk solves this by providing a web interface to manage:

Cause: PHP memory limits. In the 2022-A1 build, edit: Do not use the default radiusdesk-2022-a1

nano /etc/php/8.1/fpm/php.ini

Increase memory_limit = 256M and max_execution_time = 300. Then systemctl restart php8.1-fpm.

Even with a pre-packaged appliance, issues can occur:

| Problem | Likely Cause | Solution | |---------|--------------|----------| | Web UI not loading | Apache/Nginx down | systemctl status nginx or apache2; restart with systemctl restart | | RADIUS not responding | FreeRADIUS service crashed | systemctl restart freeradius; check logs at /var/log/freeradius/radius.log | | "Access-Reject" for valid users | Wrong shared secret or NAS IP mismatch | Verify NAS entry in RadiusDesk matches the client’s source IP and secret | | MySQL connection errors | Database overload or socket path changed | systemctl status mariadb; repair with mysqlcheck -u root -p --auto-repair --all-databases | | Disk full | Logs or database growth without rotation | df -h; truncate /var/log/mysql/* and run logrotate -f /etc/logrotate.conf | RADIUSdesk serves as a modern, user-friendly front-end for


Since you are looking at a 2022-a1 image, keep in mind:

Summary: The best feature of this appliance is that it demystifies FreeRADIUS. FreeRADIUS is powerful but notoriously difficult to configure via text files. This image wraps that power into a polished, graphical management tool that rivals expensive commercial solutions.

Supplemental Documents (2)

radiusdesk-2022-a1.ova List of program names in Statistical and Thermal Physics package 

Correspondence of program names in Statistical and Thermal Physics by Harvey Gould and Jan
Tobochnik, Princeton University Press (2010) and program descriptions in Java Simulations for
Statistical and Thermal Physics jar.

Last Modified January 17, 2015

radiusdesk-2022-a1.ova This file is included in the full-text index.

radiusdesk-2022-a1.ova STP First Edition Launcher Package 

STP Launcher Package contains read-to-run computer models and curricular materials for the first edition of Statistical and Thermal Physics by Harvey Gould and Jan Tobochnik.

Released under a Creative Commons Attribution-Share Alike 4.0 license.

Last Modified August 26, 2020

Source Code Documents (2)

radiusdesk-2022-a1.ova STP Python Source Code 

A Python implementation of the STP programs to accompany the second edition of Statistical and Thermal Physics by Harvey Gould and Jan Tobochnik.

Last Modified February 1, 2021

radiusdesk-2022-a1.ova This file has previous versions.

radiusdesk-2022-a1.ova STP Java Program Source Code 

A Java implementation of the STP programs to accompany the second edition of Statistical and Thermal Physics by Harvey Gould and Jan Tobochnik.

Last Modified August 26, 2020

OSP Projects:
radiusdesk-2022-a1.ova Open Source Physics - EJS Modeling
radiusdesk-2022-a1.ova Tracker
radiusdesk-2022-a1.ova Physlet Physics
radiusdesk-2022-a1.ova Physlet Quantum Physics
radiusdesk-2022-a1.ova STP Book