Firewall
A Firewall is a network security system that monitors and filters incoming and outgoing traffic based on defined rules, blocking unauthorized access. In healthcare, it protects systems holding protected health information and supports HIPAA security safeguards.
What is a firewall?
A firewall is a network security system that monitors traffic entering and leaving a network and decides what to permit or block based on defined rules. It acts as a controlled boundary between trusted internal systems and untrusted external networks such as the internet.
Firewalls can be hardware appliances, software, or a combination, and they enforce policies about which connections, ports, and applications are allowed. By filtering traffic, they prevent many unauthorized access attempts from reaching internal resources.
Why does a firewall matter in healthcare?
Healthcare systems hold protected health information that is both sensitive and a frequent target for attackers. A firewall is a basic but essential control that limits exposure of the systems storing and processing that data.
Properly configured firewalls support the technical safeguards expected under the HIPAA Security Rule, helping organizations restrict access to electronic protected health information. For any facility connecting clinical, scheduling, and billing systems to outside networks, the firewall is a foundational layer of defense.
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