> For the complete documentation index, see [llms.txt](https://docs.vioso.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vioso.com/preparation/network/firewall-configuration.md).

# firewall configuration

## Ports used by VIOSO

To ensure VIOSO 6 functions properly, it's essential to allow the application to communicate through the Windows Firewall. Here is a list of ports (default settings) that need to be open:

### For Remote Control

* **TCP Port**: 8317
* **UDP Port**: 817

<figure><img src="/files/y1goggMtauo8owyrewDX" alt=""><figcaption><p>Find this dialog in menu Options - Settings: Remote Control</p></figcaption></figure>

### For Multiclient Usage

* **TCP Ports:** 8417 and 8517

<figure><img src="/files/qCX5hJxkWntkynagVNrP" alt=""><figcaption><p>Find this dialog in menu Options - Settings: Multi client</p></figcaption></figure>

## Configuring the Windows Firewall:

**1. Open Windows Defender Firewall:**

* **Windows 10**: Type "Windows Defender Firewall" in the Start menu search bar and select "Windows Defender Firewall with Advanced Security."
* **Windows 11**: Search for "Firewall & network protection" in the Start menu and click on it.

**2. Create a New Inbound and Outbound Rule:**

* **Inbound Rule**:
  * In the Windows Defender Firewall with Advanced Security window, click on "Inbound Rules" on the left-hand side.
  * Click on "New Rule..." on the right-hand side.
  * Select "Program" and click "Next."
  * Browse and select the executable file `C:\ProgramFiles\VIOSO6\SPCalibrator64.exe`, then click "Next."
  * Choose "Allow the connection" and click "Next."
  * Apply the rule to all network types ( Domain, Private, Public).
  * Enter a name and optional description for the rule, then click "Finish."
* **Outbound Rule**:
  * Follow the same steps as above, but choose "Outbound Rules" instead of "Inbound Rules."