Description: Egress filtering is an essential security measure in network security that controls the traffic leaving a network to the outside. Its main goal is to prevent unauthorized data transmission, thus protecting sensitive information and avoiding potential data leaks. This type of filtering is implemented through security devices such as firewalls and intrusion prevention systems, which analyze and regulate outgoing traffic based on predefined policies. The main features of egress filtering include the ability to block or allow traffic based on specific criteria, such as IP addresses, ports, and protocols. Additionally, it may include deep packet inspection to detect malicious or unauthorized content. The relevance of egress filtering lies in its crucial role in defending network infrastructure, especially in enterprise environments where data protection is paramount. By implementing effective egress filtering, organizations can mitigate risks associated with data loss, information theft, and misuse of network resources, thereby ensuring the integrity and confidentiality of their critical information.