Segurança em redes de computadores: medidas para detecção e prevenção de ataques cibernéticos em redes corporativas

Abstract

The general objective of the research is to present measures to prevent cyber attacks for security in corporate networks using the Pfsense firewall as an operating system. The motivation of the work is to explain good management practices to protect this precious asset that is information. It is known that one cannot neglect in any aspect the information that a company has, ensuring its reliability, integrity, availability, authenticity, legality that are the basic pillars of information security. The focus of the research objectives has an explanatory character to identify the factors that must be adopted for security based on the occurrence of invasions and external attacks on corporate networks. The technical and practical procedures were developed in the laboratory of networks of the IFAP that in turn is located in the campus of Macapá. An IT environment with a virtual machine was created and a security rule was implemented in PfSense using network ping, and a complementary tool for preventing cyber attacks, Graylog, was integrated. Finally, with the application of the changes in the Firewall, it was possible to successfully ping the Web Server, establishing communication between the networks and demonstrating the effectiveness of the configuration and security rules implemented with pfSense. Thus, the implementation of Graylog as a log and event management system in conjunction with the pfSense firewall provided significant benefits for security and detection of external and internal attacks on a corporate network.