---
title: "open connection · RUAL Documentation"
description: "open ssh connection"
canonical: https://docs.rual.nl/block-types/ssh%20connection/function_ssh_open_connection
language: en
---

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# open connection

This block is part of the [`ssh connection`](https://docs.rual.nl/block-types/ssh%20connection) group and was last modified in core [`v15.0.0`](https://docs.rual.nl/core-versions/150000).

> **Deprecated** This block has been deprecated since `v14.0.1`, please avoid future use.

open ssh connection

- flow `flow`

- host required `value`

- port required `number`

- username required `value`

- private key required `value`

- passphrase required `value`

- host key `v15.0.0` `value` The key the server must present, so a machine-in-the-middle cannot collect the password. Either a SHA256 fingerprint (`ssh-keyscan host | ssh-keygen -lf -`) or a public key line (`ssh-ed25519 AAAA...`). Left empty the server is not authenticated and the fingerprint it presented is logged instead, unless the node runs with [drivers] ssh_strict_host_key.

- flow `flow`

- connection `sshconnection`

- error `value`

## Version history

Introduced in [`v9.2.5`](https://docs.rual.nl/core-versions/90205).

Last modified in [`v15.0.0`](https://docs.rual.nl/core-versions/150000).

Deprecated since [`v14.0.1`](https://docs.rual.nl/core-versions/140001).

- [Back to `ssh connection`](https://docs.rual.nl/block-types/ssh%20connection): Return to the main group to view all sub-groups

- [Back to `ssh`](https://docs.rual.nl/block-types/ssh%20connection?group=ssh): Return to the group to view all blocks within this group

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