Mosh Air-Gapped

Mosh Air-Gapped is built to keep your remote shell active when the line goes dead. It replaces SSH for long-lived connections, using a connectionless protocol and predictive input so commands run without freezing. In air-gapped mode, it works without internet access, talking only to machines on your local, isolated network. No packets leave the perimeter. No external dependencies.

Standard SSH dies when the link breaks or the IP changes. Mosh Air-Gapped keeps state on both ends. It reattaches instantly after network disruptions. Even if the client host moves, the session stays alive. Your processes keep running because the server never waits for a perfect trip across the wire.

Latency is cut down by speculative echoes of your typing. Your terminal feels immediate. The lightweight UDP transport means less overhead and less chance of stalling. You control the connection without being controlled by the connection.

Security in Mosh Air-Gapped comes from its design. Encrypted traffic. Explicit handshake before the session starts. No unauthorized relay points. By restricting communication paths to the air-gapped environment, it reduces attack surface. The codebase is open and battle-tested.

Deploying Mosh Air-Gapped is simple. Install mosh on client and server. Configure your firewall to allow the chosen UDP port only inside the isolated zone. Use your normal shell workflow. The difference: it will not break when the physical line is pulled or the Wi-Fi drops inside that zone.

For engineers managing critical systems, the benefits are clear: uninterrupted sessions, faster response, fault tolerance, and hardened isolation. Mosh Air-Gapped is not another tunneling trick — it is a protocol ready-made for environments where failure is not an option.

See how it works, live, with hoop.dev. Spin it up and connect in minutes.