

To begin, let’s configure the LAN and WAN interfaces.

The server should be a member server, NOT a DC.NIC 2 for private trusted LAN network connection.NIC 1 for public untrusted WAN network connection.Ethernet switch for LAN segment connection.If however, you are not the forgetful type, Windows Server 2012 has an exceptionally good firewall and can do the job of a router/firewall/nat appliance.
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If you forget to manually close those ports after a service or software install, you may be exposing your server. Using the Windows firewall as the front facing firewall can be risky because adding programs or services will usually automatically open up a corresponding Windows firewall ports. Note: This scenario is fantastic when combined with a non-intrusive, front facing firewall. Also note: You should not configure a Domain Controller as outlined below. A firewall device is the best option to have as your edge device. It is not recommended and definitely not best practice to have Windows Firewall alone be your front facing firewall. This type of configuration is useful if you plan to deploy a Sonicwall device in Layer2 bridge mode or transparent mode so that you can monitor network traffic in a non-disruptive manner. The server will have two network interfaces and act as a router/firewall/NAT device. In this post, we will set up a Windows Server 2012 and use RRAS to route IP traffic and to provide network address translation (NAT).
