# Connect with SSH

> Open your Cool Computers account dashboard from macOS, Linux, or Windows 10/11 with OpenSSH. No Cool Computers CLI installation is required.

```sh
ssh cool.computer
```

## First connection

OpenSSH proves your selected public key, then Cool Computers asks for your email and a six-digit code. After verification, that key is bound to your account and later connections open immediately. The SSH username is ignored.

## Host identity

Compare this Ed25519 fingerprint before accepting the host key:

```text
SHA256:x/Yv91AEM680Eq8RtKQEPQXoBLMbczOAS6kZX77AwyI
```

## Choose a key

OpenSSH offers identities in order. If you have several keys, select the one you want Cool Computers to bind.

```sh
ssh -o IdentitiesOnly=yes -i ~/.ssh/id_ed25519 cool.computer
```

Need a key? Create an Ed25519 key with `ssh-keygen -t ed25519`. This endpoint only runs the account dashboard; remote commands, file transfer, and forwarding are unavailable.

## Windows

On Windows 10 build 1809 or later and Windows 11, run the same commands from PowerShell or Windows Terminal. If `ssh` is unavailable, install the OpenSSH Client optional feature in Windows Settings.

## Network support

The `cool.computer` SSH endpoint is currently IPv4-only. It will not connect from an IPv6-only network until dedicated IPv6 support ships.