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Access Security: Protocols and Solutions

Updated: Apr 11



For AAA Solutions to perform their functions effectively, it is crucial that they are prepared to handle a variety of protocols and access technologies.


In this article, we will delve deeper into access security, focusing on the key protocols that underpin security solution implementations. Our goal is to contribute to the creation of a knowledge base that aids IT professionals in decision-making, ensuring vigilant attention in the face of the increasing volume of malicious activities.


Tacacs+ Protocol


Tacacs+ is widely recognized as the most used protocol for AAA functions in network infrastructure. Present in most network devices, it supports a variety of dynamic authentication scenarios, authorization control, and activity tracking.


Radius+ Protocol


Radius+ is essential for controlling access to resources, serving as the foundation for numerous IAM (Identity and Access Management) products. Widely employed in provider networks, corporate WiFi networks, and 802.1X, it plays a crucial role in access control.


SSH Key-Based Authentication


This approach offers an alternative to traditional password authentication, using cryptographic keys to authenticate users and devices. Although it involves complex key management, it is highly recommended for high-security-critical environments, providing an additional level of protection.


API-Based Authentication and Authorization


Some companies are adopting API-based approaches for authentication and authorization, allowing closer integration with centralized management systems and offering flexibility in access control.


OAuth and OpenID Connect


These standardized protocols offer a secure way to authenticate users and grant access to protected resources, often integrated with access control systems. Although more common in user authentication scenarios in web applications and services, they are less adopted by device manufacturers.


As we conclude our exploration, it is important to highlight some crucial points:


  • Access control, especially through centralized AAA solutions, is essential in all networks, regardless of size or business profile.


  • A variety of solutions are available to ensure a robust level of security in device access, enabling forensic analysis and real-time alerts.


  • Network infrastructure plays a fundamental role in ensuring security, as devices control the flow of data within the company.


  • Investment in infrastructure access control solutions is essential and should not be considered a hindrance, given the importance of cybersecurity.


With these considerations in mind, IT professionals can be better prepared to tackle the growing challenges in access security, ensuring adequate protection of critical resources and data within the organization.



Author: Oswaldo Franzin - Director of GPr Systems

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