feat(installer): configure Agent Tunnel during setup

[irvingouj@Devolutions (irvingoujAtDevolution)]

Adds an Agent Tunnel option to the Gateway installer.

Administrators can enable it during initial configuration.
The UDP listening port defaults to 4433 and can be changed.

[github-actions]

Let maintainers know that an action is required on their side

• Add the label release-required Please cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module) when you request a maintainer to cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module)

• Add the label release-blocker Follow-up is required before cutting a new release if a follow-up is required before cutting a new release

• Add the label publish-required Please publish libraries (`Devolutions.Gateway.Utils`, OpenAPI clients, etc) when you request a maintainer to publish libraries (Devolutions.Gateway.Utils, OpenAPI clients, etc.)

• Add the label publish-blocker Follow-up is required before publishing libraries if a follow-up is required before publishing libraries

[irvingouj@Devolutions (irvingoujAtDevolution)]

Implementation notes:

• Adds secure MSI properties P.ENABLEAGENTTUNNEL and P.AGENTTUNNELPORT.
• Adds an Agent Tunnel checkbox and UDP port field to the configuration dialog, using the existing port validation and a default of 4433.
• Configures AgentTunnel through the existing Devolutions Gateway PowerShell module during initial configuration.
• Shows the selected settings in the installation summary and adds English, French, and German resources.
• Validation: the WindowsManaged MSI build succeeded; a silent install on IT-HELP-GW wrote Enabled=true and ListenPort=4433; the manual install started the service and bound TCP 7171/8181 and UDP 4433.

Note

Human-tuned, LLM-assisted content.

[Copilot]

🟢 Approval recommended

The installer flow, validation, configuration contract, defaults, and localized resources are consistent.

Pull request overview

Adds Gateway installer support for enabling and configuring Agent Tunnel.

Changes:

• Adds Agent Tunnel controls with UDP port validation.
• Persists configuration through PowerShell custom actions.
• Adds localized resources and summary details.

File summaries

File	Description
package/WindowsManaged/Resources/Strings.g.cs	Adds generated localization keys.
package/WindowsManaged/Resources/Strings_fr-FR.json	Adds French strings.
package/WindowsManaged/Resources/Strings_en-US.json	Adds English strings.
package/WindowsManaged/Resources/Strings_de-DE.json	Adds German strings.
package/WindowsManaged/Resources/DevolutionsGateway_fr-fr.wxl	Adds French WiX strings.
package/WindowsManaged/Resources/DevolutionsGateway_en-us.wxl	Adds English WiX strings.
package/WindowsManaged/Resources/DevolutionsGateway_de-de.wxl	Adds German WiX strings.
package/WindowsManaged/Properties/GatewayProperties.g.tt	Defines tunnel installer properties.
package/WindowsManaged/Properties/GatewayProperties.g.cs	Adds generated property accessors.
package/WindowsManaged/Dialogs/SummaryDialog.cs	Displays tunnel settings in the summary.
package/WindowsManaged/Dialogs/CustomizeDialog.Designer.cs	Adds tunnel configuration controls.
package/WindowsManaged/Dialogs/CustomizeDialog.cs	Handles state, validation, and persistence.
package/WindowsManaged/Actions/GatewayActions.cs	Schedules tunnel configuration.
package/WindowsManaged/Actions/CustomActions.cs	Writes the tunnel configuration.

Review details

Files not reviewed (1)

• package/WindowsManaged/Dialogs/CustomizeDialog.Designer.cs: Generated file

• Files reviewed: 13/14 changed files
• Comments generated: 0
• Review effort level: Balanced

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[irvingouj@Devolutions (irvingoujAtDevolution)]

[Benoît Cortier (CBenoit)]

LGTM!