Share via

Adding an Application Rule to the Windows Firewall with PowerShell (en-US)

  • Article

The script below was adapted from the vbscript code at:

http://msdn.microsoft.com/en-us/library/aa364695(v=VS.85).aspx

 

#--********************************************************************/            
#  This PowerShell script includes sample code for adding an Application            
#  rule using the Microsoft Windows Firewall APIs.            
#--********************************************************************/            
            
set-psdebug -strict            
            
$CurrentProfile = $null            
            
# Protocol            
set-variable -name NET_FW_IP_PROTOCOL_TCP -value 6 -option constant            
            
# Action            
set-variable -name NET_FW_ACTION_ALLOW -value 1 -option constant            
            
# Create the FwPolicy2 object.            
$fwPolicy2 = $null            
$fwPolicy2 = new-object -comobject HNetCfg.FwPolicy2            
            
# Get the Rules object            
$RulesObject = $null            
$RulesObject = $fwPolicy2.Rules            
            
$CurrentProfiles = $fwPolicy2.CurrentProfileTypes            
            
# Create a Rule Object.            
$NewRule = $null            
$NewRule = new-object -comobject HNetCfg.FWRule            
            
$NewRule.Name = "My Application Name"            
$NewRule.Description = "Allow my application network traffic"            
$NewRule.Applicationname = "%systemDrive%\Program Files\MyApplication.exe"            
$NewRule.Protocol = $NET_FW_IP_PROTOCOL_TCP            
$NewRule.LocalPorts = 4000            
$NewRule.Enabled = $True            
$NewRule.Grouping = "@firewallapi.dll,-23255"            
$NewRule.Profiles = $CurrentProfiles            
$NewRule.Action = $NET_FW_ACTION_ALLOW            
            
# Add a new rule            
$RulesObject.Add($NewRule)

References

001
002
 $fwPolicy2 = new-object -comobject HNetCfg.FwPolicy2
$fwPolicy2 | GM

Other Languages

This article is also available in the following languages: