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What is the Portnox local TACACS+ server?
In this topic, you will learn what is the Portnox™ local TACACS+ server software and how it works.

Reference information
- Security architecture and principles
  In this topic, you will learn about the Portnox™ Cloud security principles and how they apply to every layer of the Portnox Cloud architecture.
- Availability and reliability of Cloud services
  In this topic, you will learn about the availability and reliability of the Portnox Cloud™ services.
- Device retention periods
  In this topic, you will learn the retention periods for devices in Portnox™ Cloud.
- Types of certificates
  In this topic, you will learn about the different types of certificates that are used by Portnox™ Cloud to secure communications.
- EAP methods and their security
  In this topic, you will learn more about the EAP methods used by Portnox™ Cloud, authentication repositories, and operating systems.
- Alert format/content
  In this topic, you will learn what alert information is sent to integrated SIEM solutions and in what format.
- Portnox Cloud REST API
  In this topic, you will find introductory information about the Portnox Cloud REST API, the available API functions, and their most common uses.
- Additional software
  - What is the Portnox AgentP?
    In this topic, you will learn what is the Portnox™ AgentP software and how it works.
  - What is the Portnox Active Directory Broker (AD Broker)?
    In this topic, you will learn what is the Portnox™ Active Directory Broker (AD Broker) software and how it works.
  - What is the Portnox local RADIUS server?
    In this topic, you will learn what is the Portnox™ local RADIUS server software and how it works.
  - What is the Portnox local TACACS+ server?
    In this topic, you will learn what is the Portnox™ local TACACS+ server software and how it works.
- Other integrations
  In this topic, you will find links to documents describing other integrations between Portnox™ Cloud and third-party products.
- Frequently asked questions

What is the Portnox local TACACS+ server?

In this topic, you will learn what is the Portnox™ local TACACS+ server software and how it works.

Portnox local TACACS+ server is a lightweight standalone server built on the basis of Tiny Core Linux. It is available for installation as virtual machine images or as Docker images. The local TACACS+ server is not necessary to use Portnox Cloud but it is necessary to set up a local TACACS+ instance in a virtual machine or set up a local TACACS+ container in Docker.

Installation requirements

The local TACACS+ server is available in OVA (Open Virtualization Appliance) and VHD (Virtual Hard Disk) formats for virtual machines and in the public Docker repository as portnox/portnox-tacacs.

The following are the recommended minimum settings for installing the local TACACS+ server on a virtual machine:

Recommended CPU: minimum 1 CPU
Recommended RAM: minimum 1 GB
Connection to the internet (see: firewall rule recommendations)

The local TACACS+ server is also accessible via SSH (similar to the local RADIUS server). However, for security reasons, the Tiny Core Linux installation is stripped only to basic functions of the server.