# Connecting Tacacs+

## Introduction

TACACS (**Terminal Access Controller Access Control System**) is a security protocol that provides centralized validation of users who are attempting to gain access to a router or NAS

TACACS+ is a protocol for AAA services:

- Authentication
- Authorization
- Accounting

## Register Tacas+

<span style="color: #a6d100; font-weight: bold; font-size: 18px;">1.</span> Open the **Identity &amp; Service Provider** page.

`<span class="link" id="bkmrk-main-menu">Main Menu</span><span id="bkmrk-%C2%A0%3E%C2%A0"> > </span><span class="link" id="bkmrk-administration">Administration</span><span id="bkmrk-%C2%A0%3E%C2%A0-0"> > </span><span class="link" id="bkmrk-configure-soffid">Configure Soffid</span><span id="bkmrk-%C2%A0%3E%C2%A0-1"> > </span><span class="link" id="bkmrk-web-sso">Web SSO</span><span id="bkmrk-%C2%A0%3E%C2%A0-2"> > </span><span id="bkmrk-identity-%26-service-p">Identity & Service providers</span>`

<span style="color: #a6d100; font-weight: bold; font-size: 18px;">2.</span> To add a new service provider, click on the **Add Service Provider** button.

<p class="callout info">Be in mind that you can configure more than one Entity Group and you could add new service providers in each one.</p>

<span style="color: #a6d100; font-weight: bold; font-size: 18px;">3.</span> Then you must fill in the required fields. Also, you need to provide the identity provider metadata. You can either copy it from the Soffid federation page or instruct the service provider to download the federation metadata by itself.

[![image-1681221680349.png](https://bookstack.soffid.com/uploads/images/gallery/2023-04/scaled-1680-/image-1681221680349.png)](https://bookstack.soffid.com/uploads/images/gallery/2023-04/image-1681221680349.png)

<p class="callout info">For more information about the attributes, you can visit [the Tacacs+ detailed info](https://bookstack.soffid.com/link/392#bkmrk-tacacs%2B).</p>

When a Tacacs Service Provider is created, Soffid creates an Information System

[![image-1681221732876.png](https://bookstack.soffid.com/uploads/images/gallery/2023-04/scaled-1680-/image-1681221732876.png)](https://bookstack.soffid.com/uploads/images/gallery/2023-04/image-1681221732876.png)

There are some roles defined for this Information System (0: anonymous, 1: user, ....15: root)

[![image-1681221803826.png](https://bookstack.soffid.com/uploads/images/gallery/2023-04/scaled-1680-/image-1681221803826.png)](https://bookstack.soffid.com/uploads/images/gallery/2023-04/image-1681221803826.png)