Blocking Unauthorized Access: Firewalls prevent unauthorized users and malicious software from accessing sensitive patient data. Monitoring Traffic: They continuously monitor network traffic to detect and respond to suspicious activities in real-time. Enforcing Security Policies: Firewalls enforce security policies that dictate what traffic is allowed and what is blocked, helping to maintain a secure environment for patient data. Preventing Data Exfiltration: By monitoring outbound traffic, firewalls can detect and prevent attempts to exfiltrate sensitive data from the network.