Conexão via SSH para um firewall físico administrado remotamente

Abstract

This paper is a study on how to leverage SSH (Secure Shell) for the remote use and maintenance of a firewall, using a Raspberry Pi 4 as a foundation. Firewalls are network security solutions that act as filters, ensuring greater protection for the environment. They allow access restrictions to websites or systems according to company requirements, preventing users from accessing inappropriate, non-work-related, or malicious content. To configure a firewall efficiently, it is essential to understand its rules and the specific needs of the environment, ensuring better performance and preventing potential attacks. With SSH, it is possible to remotely access the firewall to apply rules, monitor logs, update firmware, and diagnose issues without the need for physical contact. Another useful feature is SSH tunneling, which allows the management of other network services in an encrypted manner. To further enhance security, monitoring and auditing SSH connections are essential, enabling activity tracking and identifying unauthorized access attempts. Thus, SSH becomes an essential tool for the remote administration of physical firewalls, providing greater security and efficiency in network management.