Air-gapping is a security practice where software systems are isolated from external networks, including the internet, to protect sensitive data and operations. This separation, achieved through physical or logical means, is crucial for industries with stringent regulatory requirements like defense, healthcare, or finance. Air-gapped environments can also result from geographical constraints, such as on cruise ships or mining stations. Despite the lack of internet connectivity, applications in air-gapped environments still require user management and authentication, which can be facilitated by auth servers like FusionAuth. FusionAuth's Enterprise plan supports air-gapped deployments, offering features like offline license validation and secure management of user credentials. This setup ensures that applications remain functional and secure, even when disconnected from the internet, by using internal network protocols and monitoring tools to manage access and detect security incidents. Additionally, procedures for updating software in air-gapped systems involve rigorous change management and testing in isolated staging environments to maintain security and functionality.