Connection Sharing Registry Settings (Windows Embedded CE 6.0)

DHCPLeaseTime : REG_DWORD

Default setting is 0xA. The valid range for this value is 0x1 to 0xFFFFFFFF.

Specifies the lease time in minutes offered by the DHCP allocator.

DhcpAllocationEndRange : DWORD

Indicates the highest IP address in a specified range of addresses that the DHCP Allocator will assign. This value should not contain subnet information. It should contain only the least-significant bits in the IP address range.

In this example, a gateway has a private interface address 192.168.0.1 and a subnet mask of 255.255.255.0. For the allocator to assign addresses in a range from 192.168.0.100 to 192.168.0.200, you would set the DhcpAllocationStartRange to equal 100 and DhcpAllocationEndRange to equal 200. Because the subnet is not used, if the IP address of the private interface changes to 169.254.1.2, you would not need to change these values.

If no value is specified, the DHCP Allocator assigns IP addresses across the entire subnet range of the private interface.

For more information about how DhcpAllocationStartRange and DhcpAllocationEndRange work, see DHCP Allocator Operation.

EnableDhcpAllocator : REG_DWORD

Default setting is zero (0), or FALSE.

Specifies whether the DHCP allocator is enabled. The valid range for this value is 0 to 0xFFFFFFFF. A non-zero value enables the DHCP allocator on the private interface specified in the PrivateInterface subkey. A value of 0 specifies that the DHCP allocator is not enabled.

EnablePacketFiltering : REG_DWORD

Specifies whether the packet filter is enabled. The valid range for this value is 0 to 0xFFFFFFFF. A non-zero value enables the packet filter. A value of 0 specifies that the packet filter is not enabled.

Security Note:

This subkey enables filtering in the NAT driver to help block unsolicited connections over the public network interface. Connections originating on the local network and connections mapped through the Network Address Translator are unaffected by this subkey.

Note:

IPv6 routing does not apply a packet filter in a gateway device. Instead, all traffic is routed directly to the destination device. To avoid exposing internal devices directly on the external public network, you must configure the IP firewall on the gateway. For information about configuring the IP firewall to properly manage traffic destined for the internal network, see IP Firewall Reference.

PrivateInterface : REG_MULTI_SZ

Specifies a list of names of the NDIS adapter instances for the private interfaces, for example, Ne20002. This value can be a list of names either of valid NDIS adapters or of valid dial-up networking connectoids.

If the list contains multiple private interfaces, those interfaces must all have the same subnet value in their IP addresses. For example, if PrivateInterface equals "Ne20001";"Ne20002" and the Ne20001 interface has an IP address of 169.254.0.1, the Ne20002 interface can have an IP address of 169.254.0.2, but not 192.168.0.1.

PublicInterface : REG_SZ

(optional) If this value is not present, the port mapping is applied to the primary public interface only.

If this value is present, the port mapping is restricted to the specified public interface. The following list shows the possible values:

• The name of a valid NDIS adapter for the public network interface, for example, NE20001.
  
• The name of a valid dial-up networking connection. For dial-up connections, use the name of the RAS connection.