# Sys_IsFirewallPortOpen

> Determines if a certain port is open in Windows Firewall.

Source: https://docs.capaone.com/capainstaller/vb-scripting-library/system-functions/sys-isfirewallportopen/  
Product: CapaInstaller — a separate CapaSystems product; do not apply this page to any other.

### Description

Determines if a certain port is open in Windows Firewall

### Syntax

Sys_IsFirewallPortOpen(iPort) As Boolean

### Parameters

#### iPort (Integer)

Port number

### Return value

Result will be stored in gbValue

### Example

**VBScript**

```vb
If bStatus Then bStatus = Sys_Is FirewallPortOpen(12946)
If bStatus Then bStatus = Job_WriteLog("Custom", "gbValue: " & gbValue, bStatus, True)
```

[Scripting Guidelines](/capainstaller/vb-scripting-library/scripting-guidelines/)

### Related functions

[Sys_IsFirewallInstalled](/capainstaller/vb-scripting-library/system-functions/sys-isfirewallinstalled/) [Sys_IsFirewallEnabled](/capainstaller/vb-scripting-library/system-functions/sys-isfirewallenabled/) [Constants](/capainstaller/vb-scripting-library/addendum/constants/) [Package Property](/capainstaller/vb-scripting-library/addendum/package-property/) [Variables](/capainstaller/vb-scripting-library/addendum/variables/)