Your network contains an Active Directory domain named contoso.com. The domain contains a server named
Server1 that runs Windows Server 2012 R2.
You create a new inbound rule by using Windows Firewall with Advanced Security.
You need to configure the rule to allow Server1 to accept unsolicited inbound packets that are received through
a network address translation (NAT) device on the network.
Which setting in the rule should you configure?

A.
Interface types

B.
Authorized computers

C.
Remote IP address

D.
Edge traversal

Explanation:
Edge traversal allows the computer to accept unsolicited inbound packets that have passed through an edge
device, such as a network address translation (NAT) router or firewall.

http://technet.microsoft.com/en-us/library/cc731927.aspx