diff --git a/GSv6FwdSetup/GSv6FwdSetup.wixproj b/GSv6FwdSetup/GSv6FwdSetup.wixproj
index 8bd1f1d..6134f89 100644
--- a/GSv6FwdSetup/GSv6FwdSetup.wixproj
+++ b/GSv6FwdSetup/GSv6FwdSetup.wixproj
@@ -31,6 +31,12 @@
       <RefTargetDir>INSTALLFOLDER</RefTargetDir>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <WixExtension Include="WixFirewallExtension">
+      <HintPath>$(WixExtDir)\WixFirewallExtension.dll</HintPath>
+      <Name>WixFirewallExtension</Name>
+    </WixExtension>
+  </ItemGroup>
   <Import Project="$(WixTargetsPath)" Condition=" '$(WixTargetsPath)' != '' " />
   <Import Project="$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets" Condition=" '$(WixTargetsPath)' == '' AND Exists('$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets') " />
   <Target Name="EnsureWixToolsetInstalled" Condition=" '$(WixTargetsImported)' != 'true' ">
diff --git a/GSv6FwdSetup/Product.wxs b/GSv6FwdSetup/Product.wxs
index a1a07c4..ce52c41 100644
--- a/GSv6FwdSetup/Product.wxs
+++ b/GSv6FwdSetup/Product.wxs
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
+<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi"
+     xmlns:fire="http://schemas.microsoft.com/wix/FirewallExtension">
   <Product Id="*" Name="IPv6 Forwarder for GS Protocol" Language="1033" Version="0.1.0.0" Manufacturer="Cameron Gutman" UpgradeCode="cae27153-26ed-4da2-8dd5-8cddc7126a05">
     <Package InstallerVersion="500" Compressed="yes" InstallScope="perMachine" />
 
@@ -22,7 +23,11 @@
   <Fragment>
     <ComponentGroup Id="ProductComponents" Directory="INSTALLFOLDER">
       <Component Id="ProductComponent">
-        <File Source="$(var.GSv6Fwd.TargetPath)" KeyPath="yes"/>
+        <File Source="$(var.GSv6Fwd.TargetPath)" KeyPath="yes">
+          <fire:FirewallException Id="FwException"
+                                  Scope="any"
+                                  Name="IPv6 Forwarder for GS Protocol"/>
+        </File>
         <ServiceInstall Type="ownProcess"
                         Name="GSv6FwdSvc"
                         DisplayName="IPv6 Forwarder for GS Protocol"