Instead, the mappings are displayed as hyphens (-) where the values should be displayed. Additionally, if you open the NAT properties, the mapping information no longer contains any values. In this scenario, the NAT functionality fails. You restart the remote access service or the computer. You change the TCP or UDP mapping time-out value by using the netsh command. You have a Windows Server 2008 R2 Service Pack 1 (SP1)-based multi-homed Routing and Remote Access service (RRAS) server that has network address translation (NAT) configured. Windows Server 2008 R2 Service Pack 1 Windows Server 2008 R2 Datacenter Windows Server 2008 R2 Enterprise Windows Server 2008 R2 for Itanium-Based Systems Windows Server 2008 R2 Standard More.