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---------

Co-authored-by: Dan Heath <76443935+Dan-Heath@users.noreply.github.com>

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---------

Co-authored-by: kevin-loehfelm <37027455+kevin-loehfelm@users.noreply.github.com>
Co-authored-by: kevin-loehfelm <kevin.loehfelm@hashicorp.com>
Co-authored-by: Dan Heath <76443935+Dan-Heath@users.noreply.github.com>
Co-authored-by: Florin Cătălin Țiucra-Popa <106736683+FlorinTP@users.noreply.github.com>
Co-authored-by: Adam Bouhmad <adbouhmad@gmail.com>
2023-09-12 14:37:31 -04:00

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---
layout: docs
page_title: connect ssh - Command
description: |-
The "connect ssh" command command performs a target authorization or consumes an existing authorization token, and launches a proxied SSH connection.
---
# connect ssh
Command: `boundary connect ssh`
The `connect ssh` command authorizes a session against a target and invokes an SSH client for the connection.
The command fills in the local address and port.
You can specify your SSH client of choice using the `-style` option.
@include 'cmd-connect-env-vars.mdx'
The SSH helper command sets the host key `Alias`.
When an `Alias` is set, SSH does not use `localhost:<port>` for host key validation, but instead uses one of the following:
- For connections to a target that has an attached host set, the SSH helper command sets the `HostID` as the alias.
- For connections directly to a host, the SSH helper command sets the `HostID` as the alias.
- For connections to a target that has an address field configured, the SSH helper command sets the `TargetID` as the alias.
## Examples
The following example authorizes a session to a target with the ID `ttcp_eTcZMueUYv` and invokes the default SSH client without any additional options:
<CodeBlockConfig hideClipboard>
```shell-session
$ boundary connect ssh -target-id ttcp_eTcZMueUYv
```
</CodeBlockConfig>
The following example authorizes a session to a target with the ID `ttcp_eTcZMueUYv`, and pipes arguments directly to the invoked SSH binary.
Any SSH arguments after the double hyphen are sent directly to the binary:
<CodeBlockConfig hideClipboard>
```shell-session
$ boundary connect ssh -target-id ttcp_eTcZMueUYv -- -A
```
</CodeBlockConfig>
<CodeBlockConfig hideClipboard>
```shell-session
$ boundary connect ssh -target-scope-name Helpdesk -target-name ubuntu-server -- -A
```
</CodeBlockConfig>
<CodeBlockConfig hideClipboard>
```shell-session
$ boundary connect ssh -target-id=ttcp_Gymo7Vcq7Y \
-host-id=hst_FrdNPd9Zm9 -- -l ubuntu -i private_key.pem
```
</CodeBlockConfig>
## Usage
<CodeBlockConfig hideClipboard>
```shell-session
$ boundary connect ssh [options] [args]
```
</CodeBlockConfig>
This command performs a target authorization or consumes an existing authorization token, and launches a proxied SSH connection.
@include 'cmd-connect-command-options.mdx'
### SSH options:
- `style` `(string: "")` - How the CLI attempts to invoke an SSH
client.
This value also sets a suitable default for `-exec`, if you did not specify a value.
Currently understood values are `ssh` and `putty`.
The default is `ssh`.
You can also specify how the CLI attempts to invoke the SSH client using the **BOUNDARY_CONNECT_SSH_STYLE** environment variable.
- `username` `(string: "")` - The username you want to pass through to the
client.
You can also specify a username using the **BOUNDARY_CONNECT_USERNAME** environment variable.