Air gap

Air gap, also known as an air wall or air gapping, is a security measure used in computer networks to ensure that a secure computer network is physically isolated from an insecure public or private network. This isolation is achieved by keeping the secure network devices completely disconnected from other networks. The purpose of the air gap is to keep a system secure, and make sure that an attacker cannot access the secure system through a network-based attack.

Air gap security measures are used by organizations and companies to keep sensitive information secure and protect against malicious actors from gaining access to the system. An air gap is also considered a security measure in areas of defense, government, and finance, where confidential data must be kept secure.

The most common form of air gapping involves physically disconnecting the secure network from other networks. However, other common forms of air gap security measures include using mobile devices to access networks remotely, connecting the secure network to a different power grid than the public grid, and using unidirectional gateways which only allow data transfer from the secure network to a public network.

In addition to providing network security, air gap security measures can also be used to protect a system from malware and other malicious software which could gain access to the system through a network connection. By having no network connection, malware is unable to gain access to the system, and it also prevents the spread of viruses and other malicious software to the secure network.

Ultimately, air gap security measures are a critical element of any security program, and organizations and companies must use air gap security measures in order to keep confidential data secure. By utilizing an air gap, sensitive information is kept secure and malicious actors are unable to gain access to the secure system.