# Parallels Client

| Source           | Destination                        | Protocols                                               | Ports                                              | Description                                                                                                                                                                                                                                             |
| ---------------- | ---------------------------------- | ------------------------------------------------------- | -------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Parallels Client | HALB                               | <p>TCP, UDP</p><p>TCP, UDP</p>                          | <p>80, 443</p><p>20009</p>                         | <p>Management and user session connections.</p><p>Device Manager shadowing via Firewall (indirect network connection).</p>                                                                                                                              |
|                  | RAS Secure Gateway Forwarding mode | <p>TCP, UDP</p><p>TCP, UDP</p><p>UDP</p>                | <p>80, 443</p><p>3389</p><p>20000</p>              | <p>Management and user session connections.</p><p>Optional - Used for user session if RDP load balancing is enabled (Standard RDP).</p><p>Secure Gateway lookup broadcast.</p>                                                                          |
|                  | RAS Secure Gateway Normal mode     | <p>TCP, UDP</p><p>TCP, UDP</p><p>TCP, UDP</p><p>UDP</p> | <p>80, 443,</p><p>3389</p><p>20009</p><p>20000</p> | <p>Management and user session connections.</p><p>Optional - Used for user session if RDP load balancing is enabled (Standard RDP).</p><p>Device Manager shadowing via Firewall (indirect network connection)</p><p>Secure Gateway Lookup Broadcast</p> |
|                  | Session host (VDI, RDS, RemotePC)  | TCP, UDP                                                | 3389                                               | Used for user session connections in Direct Mode only. RDP connection is always encrypted                                                                                                                                                               |
|                  | Azure Virtual Desktop Services     | <p>TCP</p><p>UDP</p>                                    | <p>443</p><p>3390</p>                              | <p>Azure Virtual Desktop Gateway connection</p><p>Used for user session connections in ShortPath mode only.</p>                                                                                                                                         |
|                  | Microsoft site                     | TCP                                                     | 443                                                | Download Microsoft Remote Desktop (MSRDC) client                                                                                                                                                                                                        |
|                  | Parallels site                     | TCP                                                     | 80, 443                                            | Check for updates and download Parallels Client                                                                                                                                                                                                         |


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.parallels.com/landing/ras-reference-architecture/v20/port-reference-and-ssl-certificates/port-reference/parallels-client.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.