Install WFilter NG Firewall in Hyper-V

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1 Introduction

You're recommended to install WFilter NG Firewall in virtual machines only for preview testing. Please also check:

  • WFilter NG Firewall in a virtual machine shall work in "gateway" mode.
  • To test a client, you need to modify this client's network settings to use WFiler NG Firewall as its gateway.
  • Please note: in a vm, since both outgoing and incoming traffic use a same cable, suppose your network connection is 100Mb, you only can get a maximum bandwidth of 50Mb.
  • To install WFilter NG Firewall in a physical PC, please check: WFilter NG Firewall Installation Steps

This document demonstrates certain steps to setup a Hyper-V virtual machine running WFilter NG Firewall.

2 Steps to install WFilter NG Firewall in Hyper-V

  • New a virtual machine.


  • Choose "virtual switch" for the default network adapter.


  • Create the virtual harddisk.


  • Choose the downloaded WFilter NG Firewall iso as DVD image.


  • Add another adapter.(Also connected to the "virtual switch".


2.1 Configuration

Add an 192.168.10.x ip in your host pc, then you can access webUI of WFilter NG Firewall via this url: . Please note:

  • Suppose your existing subnet is "192.168.1.x", with gateway "".
  • In "Wizard" of WFilter NG Firewall, please choose "Gateway" and set a "Static" ip to the WAN interface.(For example:, netmask, gateway
  • Modify ip address of a client device to "192.168.10.x", with gateway ""(the default lan ip of WFilter NG Firewall). So WFilter NG Firewall can control it.
  • If there is an existing DHCP server in your network. Please disable it. So WFilter NG Firewall will act as the DHCP server. All clients with "dynamic ip" will be redirected to WFilter NG Firewall.
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