ASA (Adaptive Security Appliance)

An ASA (Adaptive Security Appliance) is a device used in computer networks to protect data and systems from threats. It acts like a security gate, controlling which data can enter or leave a network based on rules set by administrators. It also filters harmful traffic, detects intrusions, and can connect different networks securely via VPNs. By managing access and monitoring activity, the ASA helps ensure that only legitimate and safe communications occur, maintaining the integrity and security of the network infrastructure.