No, Sandstorm does not rely on being behind a firewall. Sandstorm sandboxes apps and enforces access control on them such that security bugs in the apps themse

No, Sandstorm does not rely on being behind a firewall. Sandstorm sandboxes apps and enforces access control on them such that security bugs in the apps themselves are almost entirely mitigated. See: https://docs.sandstorm.io/en/latest/using/security-non-events/ https://docs.sandstorm.io/en/latest/using/security-non-event... Meanwhile Sandstorm itself is designed to manage its own security, e.g. by automatically updating, relying on hard-to-do-wrong authentication mechanisms (i.e. not passwords), etc., so that users running their own server do not need to know about server security.