Every server, embedded board, and edge gateway you manage becomes reachable through one SSH address in ShellHub, even when it sits behind NAT with no public IP and no open inbound port. A small agent on each device dials out to your server, so a box on a customer LAN or a cellular link needs nothing beyond outbound web access. Connect with the stock ssh client by typing [email protected]@server, or open a terminal in the browser, and scp, sftp, rsync, and port forwarding work unchanged. SSH identities tie every key to a named team member, so removing someone ends their access on every device at once. Default-deny access policies grant or block members, roles, users, or API keys by device tag, Linux login, and source address, and can require a fresh browser confirmation before a session opens. Provisioning keys enroll whole fleets through automatic, manual, webhook, or allowlist acceptance, with usage limits, expiry dates, and tags. The Sessions page records who connected to which device, as which login, and from where, and browser terminals can be recorded and replayed. A Docker connector turns containers into devices that policies can grant one by one. Four member roles shape what each person can change, and the HTTP API, API keys, and an MCP server let scripts and AI assistants list devices and review sessions. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.