Connect to your first target

11min
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Boundary

In the Admin Console, the Generated localhost ssh target with an alias has the address 127.0.0.1 with connection type TCP. This is a TCP target with a default port of 22 (SSH). In this tutorial, you will start an ssh session to this default target using the CLI command.

Open a terminal session and set up environment variables to support your Boundary instance.

Note

The use of environment variables is not required, but used for the ease of following this tutorial.

Create an environment variable for the Generated target with an alias ID. Copy the target ID from the Admin Console.

$ export TARGET_ID=ttcp_YennSYsnwU

If you authenticated through the Admin Console UI, authenticate with Boundary using the CLI with the login name admin and password password.

$ boundary authenticatePlease enter the login name (it will be hidden):Please enter the password (it will be hidden):Authentication information:  Account ID:      acctpw_VOeNSFX8pQ  Auth Method ID:  ampw_ZbB6UXpW3B  Expiration Time: Mon, 13 Feb 2023 12:35:32 MST  User ID:         u_ogz79sV4sTThe token was successfully stored in the chosen keyring and is not displayed here.

Boundary clusters require an accessible key management service (KMS). An error may occur if this service is not running. If you have any issues check the Troubleshooting section in the Getting Started with Boundary tutorial.

Read the Target Details

Read the details about the Generated localhost ssh target with an alias.

$ boundary targets read -id $TARGET_ID Target information:  Address:                    127.0.0.1  Created Time:               Thu, 23 May 2024 17:17:49 MDT  Description:                Provides an initial localhost target to SSH to using an alias in  Boundary  ID:                         ttcp_YennSYsnwU  Name:                       Generated localhost ssh target with an alias  Session Connection Limit:   -1  Session Max Seconds:        28800  Type:                       tcp  Updated Time:               Thu, 23 May 2024 17:17:49 MDT  Version:                    1   Scope:    ID:                       p_1234567890    Name:                     Generated project scope    Parent Scope ID:          o_1234567890    Type:                     project   Authorized Actions:    set-credential-sources    no-op    update    add-host-sources    authorize-session    delete    remove-host-sources    add-credential-sources    remove-credential-sources    read    set-host-sources   Aliases:    ID:                       alt_Vvzm43L8oe    Value:                    ssh.boundary.dev   Attributes:    Default Port:             22

Use the boundary connect command to SSH into the localhost.

$ boundary connect ssh -target-id $TARGET_ID

This will attempt to establish an ssh session to your localhost. You may need to enable Remote Login on your system for the session to connect as expected.

When prompted, enter your local administrator user password to proceed.

Troubleshooting MacOS Connections

On MacOS you might receive an error message similar to No connection could be made because the target machine actively refused it. In this case, you may need to enable Remote Login under the System Preferences -> Sharing settings for your user.

Even with Remote Login enabled, you may need to directly add your username to the list of users under "Allow access for:". Enable "Only these users" and add your username to the list using the + button.

An example of this settings panel is shown below. You may need to add your username instead of "Administrators". After enabling, try running boundary connect ssh again.

MacOS Troubleshooting

In the terminal where Boundary server is running, you should see connection successfully authorized message.

{  "id": "C5pFCkDOJC",  "source": "https://hashicorp.com/boundary/AWTMC02DRD6R/controller+worker",  "specversion": "1.0",  "type": "observation",  "data": {    "latency-ms": 52.460987,    "request_info": {      "id": "gtraceid_8Z4m3H9C4Qs453VSMbQG",      "method": "POST",      "path": "/v1/targets/ttcp_YennSYsnwU:authorize-session",      "public_id": "at_FFPNWPkM5c",      "client_ip": "127.0.0.1"    },    "start": "2024-05-23T17:34:12.394394-06:00",    "status": 200,    "stop": "2024-05-23T17:34:12.446855-06:00",    "version": "v0.1"  },  "datacontentype": "text/plain",  "time": "2024-05-23T17:34:12.44688-06:00"}{  "id": "t6nOYORm7o",  "source": "https://hashicorp.com/boundary/AWTMC02DRD6R/controller+worker",  "specversion": "1.0",  "type": "system",  "data": {    "version": "v0.1",    "op": "worker.(Worker).handleProxy",    "data": {      "msg": "session successfully activated",      "session_id": "s_TNkyKMwuwM"    }  },  "datacontentype": "text/plain",  "time": "2024-05-23T17:34:12.491546-06:00"}{  "id": "prENrL8X62",  "source": "https://hashicorp.com/boundary/AWTMC02DRD6R/controller+worker",  "specversion": "1.0",  "type": "system",  "data": {    "version": "v0.1",    "op": "worker.(Worker).handleProxy",    "data": {      "connection_id": "sc_dhEBpPysQT",      "msg": "connection successfully authorized",      "session_id": "s_TNkyKMwuwM"    }  },  "datacontentype": "text/plain",  "time": "2024-05-23T17:34:12.500967-06:00"}

Type exit to close the connection to the localhost.

You can connect to a target using an alias instead of an ID.

Read the target details again, and find the Aliases value.

$ boundary targets read -id $TARGET_ID Target information:  Address:                    127.0.0.1  Created Time:               Thu, 23 May 2024 17:17:49 MDT  Description:                Provides an initial localhost target to SSH to using an alias in  Boundary  ID:                         ttcp_YennSYsnwU  Name:                       Generated localhost ssh target with an alias  Session Connection Limit:   -1  Session Max Seconds:        28800  Type:                       tcp  Updated Time:               Thu, 23 May 2024 17:17:49 MDT  Version:                    1   Scope:    ID:                       p_1234567890    Name:                     Generated project scope    Parent Scope ID:          o_1234567890    Type:                     project   Authorized Actions:    set-credential-sources    no-op    update    add-host-sources    authorize-session    delete    remove-host-sources    add-credential-sources    remove-credential-sources    read    set-host-sources   Aliases:    ID:                       alt_Vvzm43L8oe    Value:                    ssh.boundary.dev   Attributes:    Default Port:             22

Connect to the target again using the alias ssh.boundary.dev.

$ boundary connect ssh ssh.boundary.dev

If you want to specify a username to login with, you can do so via the -username flag. For example:

$ boundary connect ssh ssh.boundary.dev -username james

There is also a -style flag to specify a different SSH clients. Currently, the boundary connect ssh command supports -style putty to support passing connection information to PuTTY for Windows users.

$ boundary connect ssh -style putty -exec putty.exe ssh.boundary.dev

If you want to pass additional arguments to the SSH client, provide them to the command line separated by "--" (space, two hyphens, space). Any arguments after the hyphens are sent directly to the executed client.

For example, the following command accomplishes the same as -username flag.

$ boundary connect ssh ssh.boundary.dev -- -l james

Read the Boundary connect usages section to learn more about the boundary connect command.

Manage sessions

In the admin console, select Sessions. The UI will show an entry with session ID matching in the server log (e.g. s_895vskVZh0).

Sessions

Open a new command terminal and execute the boundary connect command again.

$ boundary connect ssh ssh.boundary.dev

Return to the admin console. You should see two sessions listed.

Sessions

Click the Cancel button of one of the sessions. The status changes to canceling and then terminated.

You can list sessions within an enclosing scope or resource via CLI. The dev mode created a default scope named, Generated project scope with ID, p_1234567890.

Create an environment variable for the Global scopes password auth method ID.

$ export BOUNDARY_SCOPE_ID=p_1234567890

List the sessions for the Generated project scope.

$ boundary sessions list -scope-id=$BOUNDARY_SCOPE_ID Session information:  ID:                 s_895vskVZh0    Status:           active    Created Time:     Wed, 07 Oct 2020 18:34:05 PDT    Expiration Time:  Thu, 08 Oct 2020 02:34:05 PDT    Updated Time:     Wed, 07 Oct 2020 18:34:06 PDT    User ID:          u_1234567890    Target ID:        ttcp_1234567890

BOUNDARY_SCOPE_ID is a built-in environment variable, so you don't need to specify it on the CLI after defining it in your local session.

$ boundary sessions list Session information:  ID:                 s_895vskVZh0    Status:           active    Created Time:     Wed, 07 Oct 2020 18:34:05 PDT    Expiration Time:  Thu, 08 Oct 2020 02:34:05 PDT    Updated Time:     Wed, 07 Oct 2020 18:34:06 PDT    User ID:          u_1234567890    Target ID:        ttcp_1234567890

Refer to the CLI documentation for a full list of environment variables.

Open a new command terminal and execute the boundary connect command again.

$ boundary connect ssh ssh.boundary.dev

List sessions again.

$ boundary sessions list Session information:  ID:                 s_895vskVZh0    Status:           active    Created Time:     Wed, 07 Oct 2020 18:34:05 PDT    Expiration Time:  Thu, 08 Oct 2020 02:34:05 PDT    Updated Time:     Wed, 07 Oct 2020 18:34:06 PDT    User ID:          u_1234567890    Target ID:        ttcp_1234567890   ID:                 s_7VCb07G202    Status:           active    Created Time:     Wed, 07 Oct 2020 18:37:53 PDT    Expiration Time:  Thu, 08 Oct 2020 02:37:53 PDT    Updated Time:     Wed, 07 Oct 2020 18:37:53 PDT    User ID:          u_1234567890    Target ID:        ttcp_1234567890

Pick one of the sessions and copy its ID. Then cancel the session.

$ boundary sessions cancel -id=s_a8XKH5Zg5J Session information:  Auth Token ID:       at_6FOC0R3hDG  Created Time:        Wed, 07 Oct 2020 18:37:53 PDT  Endpoint:            tcp://localhost:22  Expiration Time:     Thu, 08 Oct 2020 02:37:53 PDT  Host ID:             hst_1234567890  Host Set ID:         hsst_1234567890  ID:                  s_7VCb07G202  Status:              canceling  Target ID:           ttcp_1234567890  Type:                tcp  Updated Time:        Wed, 07 Oct 2020 18:42:39 PDT  User ID:             u_1234567890  Version:             3   Scope:    ID:                p_1234567890    Name:              Generated project scope    Parent Scope ID:   o_1234567890    Type:              project   States:    Start Time:        Wed, 07 Oct 2020 18:42:39 PDT    Status:            canceling     End Time:          Wed, 07 Oct 2020 18:42:39 PDT    Start Time:        Wed, 07 Oct 2020 18:37:53 PDT    Status:            active     End Time:          Wed, 07 Oct 2020 18:37:53 PDT    Start Time:        Wed, 07 Oct 2020 18:37:53 PDT    Status:            pending

List sessions to verify their current status.

$ boundary sessions list Session information:  ID:                 s_895vskVZh0    Status:           active    Created Time:     Wed, 07 Oct 2020 18:34:05 PDT    Expiration Time:  Thu, 08 Oct 2020 02:34:05 PDT    Updated Time:     Wed, 07 Oct 2020 18:34:06 PDT    User ID:          u_1234567890    Target ID:        ttcp_1234567890   ID:                 s_7VCb07G202    Status:           terminated    Created Time:     Wed, 07 Oct 2020 18:37:53 PDT    Expiration Time:  Thu, 08 Oct 2020 02:37:53 PDT    Updated Time:     Wed, 07 Oct 2020 18:42:41 PDT    User ID:          u_1234567890    Target ID:        ttcp_1234567890

Notice that the session status is terminated.

The command terminal where the SSH session was running should also show the connection was closed.

Connection closed by 127.0.0.1 port 53909

In the Boundary server log, you should see a message indicating that the worker terminated the SSH session.

[INFO]  worker: terminated connection due to cancelation or expiration: session_id=s_7VCb07G202 connection_id=sc_ph2gtsFAa7[INFO]  controller.worker-handler: connection closed: connection_id=sc_ph2gtsFAa7[INFO]  controller.worker-handler: connection closed: connection_id=sc_ph2gtsFAa7

Boundary connect usages

Build-in commands

Out of the box, Boundary supports the following connection protocols.

Subcommand	Description
`http`	Authorize a session against a target and invoke an HTTP client to connect
`ssh`	Authorize a session against a target and invoke an SSH client to connect
`postgres`	Authorize a session against a target and invoke a Postgres client (`psql`) to connect
`rdp`	Authorize a session against a target and invoke an RDP client (`mstsc`) to connect

Exec command

The boundary connect can execute clients even when there is no built-in wrapper subcommand for it using -exec. The -exec flag is a very powerful tool, allowing you to wrap Boundary TCP sessions in your preferred client. You can use this flag to create an authenticated proxy to almost anything.

If all command flags are followed by "--" (space, two hyphens, space), then any arguments after that will be sent directly to the client. This can be specified via the BOUNDARY_CONNECT_EXEC environment variable as well.

Example

cURL can be used to do an authenticated download of hashicorp.com.

First, update the default TCP target (ttcp_1234567890) port from 22 to 443 using the boundary targets update command.

$ boundary targets update tcp -default-port 443 ssh.boundary.dev Target information:   ## ...snip...   Attributes:    Default Port:             443

Now, execute the cURL command using the -exec flag.

$ boundary connect -exec curl ssh.boundary.dev \     -- -vvsL --output /dev/null hashicorp.com

Set session limits

By default, the session max time is set to 8 hours (28800 seconds). You can overwrite the default to limit the session duration using the boundary targets update command.

Set the max session time to 15 seconds to see how it behaves. Also, set the default TCP port back to 22 if you modified it to use 443.

$ boundary targets update tcp ssh.boundary.dev \   -default-port 22 \   -session-max-seconds 15

Example Output:

$ boundary targets update tcp ssh.boundary.dev \   -default-port 22 \   -session-max-seconds 15 Target information:  Created Time:               Wed, 30 Sep 2020 19:12:57 PDT  Description:                Provides an initial target in Boundary  ID:                         ttcp_1234567890  Name:                       Generated target  Session Connection Limit:   1  Session Max Seconds:        15  Type:                       tcp  Updated Time:               Wed, 30 Sep 2020 22:29:00 PDT  Version:                    3   ## ...snip...   Attributes:    Default Port:             22

Run the boundary connect command again to SSH into the localhost.

$ boundary connect ssh ssh.boundary.dev

The session automatically terminates after 15 seconds.

Connection closed by 127.0.0.1 port 61789Termination information:  Reason:   Session has expired

Next steps

You learned the boundary connect command, viewed and managed the SSH sessions.

The next step is to install the Boundary Desktop app, and ensure you can repeat relevant steps in this tutorial related to viewing and managing SSH sessions.

Explore the Boundary Admin Console web UI.

Install the Boundary Desktop Client app