> For the complete documentation index, see [llms.txt](https://doc.engenius.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.engenius.ai/home-cloud-user-manual/security/radsec-certificate.md).

# RadSec Certificate

By default, RADIUS does not encrypt user credentials or other sensitive information transmitted between the RADIUS client and server. This leaves the authentication process vulnerable to eavesdropping attacks, where an attacker can do MITM (man-in-the-middle) to intersect traffic and get user information. This becomes even more important when the Radius server is located at a remote site.

RadSec, or RADIUS over TLS, is a common encryption method for RADIUS. It allows you to exchange RADIUS authentication, authorization, and accounting messages through a secure TLS tunnel between the RADIUS server and the AP. 

####

## How to Configure

1. Upload RadSec certificate that you got from RADIUS servers in ORGANIZATION > Security > Certificates

<figure><img src="/files/FGbFo25X3txp8nTDqubz" alt=""><figcaption></figcaption></figure>

2. Enable the RadSec function on APs. We support this option for both WPA2/3 Enterprise and Captive portal access. Go to following pages to enable RadSec function:\
   \- **CONFIGURE > AP > SSID > Wireless > WPA2/3 Enterprise > Custom RADIUS**\
   \- **CONFIGURE > AP > SSID > Captive Portal > Custom RADIUS**&#x20;

   APs will automatically search available certificates from Org pool to associate with RADIUS servers after enabling RadSec function.

<figure><img src="/files/1jxYJi0GVVxxurPRfJMn" alt=""><figcaption></figcaption></figure>

## Test

**Test** function is to make sure that the radius configuration is correct. AP will use the IP : Port and secret to try to connect with the radius server.&#x20;

<figure><img src="/files/103VHUTcvxjarCruDAMK" alt=""><figcaption></figcaption></figure>

If **Captive Portal > Custom Radius > “Radius MAC-Auth**” is enabled, then an authorized MAC is required for the test.

<figure><img src="/files/d2rGbUhPnCcvytEhN6pC" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
**Note**

RadSec requires AP firmware version 1.x.81 or higher and the addition of a RadSec certificate for functionality.
{% endhint %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://doc.engenius.ai/home-cloud-user-manual/security/radsec-certificate.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.