Chapter 8 NAT
NR2101 User’s Guide
83
The following table describes the labels in this screen.
8.3 Technical Reference
The following section contains additional technical information about the NR2101 features described in
this chapter.
Table 33 NAT SETTINGS
LABEL
DESCRIPTION
IP Pass-Through
Select
Enable
to activate IP Pass-Through. IP Pass-through allows a LAN computer on
the local network of the NR2101 to have access to web services using the NR2101’s
public WWAN IP address. When IP Pass-Through is configured, all traffic is forwarded
to the LAN computer and will not go through NAT.
Select NAT Type
Select a NAT type from the drop-down list box. Choices are
Symmetric
,
Port
Restricted, Full cone,
or
Address Restricted.
IPSEC VPN Pass-Through
Select
Enable
to allow VPN clients to make outbound IPSec connections. It is
required in order to connect to a IPSec VPN account. If IPSEC is disabled, then when
a client sends a request to a VPN server, the server will reply to the NR2101 and the
NR2101 will drop the request. When IPSEC is enabled, the NR2101 will forward the
reply from the VPN server to the client that initiated the request, and the connection
will establish successfully.
PPTP VPN Pass-Through
Select
Enable
to allow VPN clients to make outbound PPTP connections. It is required
in order to connect to a PPTP VPN account. If PPTP is disabled, then when a client
sends a request to a VPN server, the server will reply to the NR2101 and the NR2101
will drop the request. When PPTP is enabled, the NR2101 will forward the reply from
the VPN server to the client that initiated the request, and the connection will
establish successfully.
L2TP VPN Pass-Through
Select
Enable
to allow VPN clients to make outbound L2TP connections. It is required
in order to connect to a L2TP VPN account. If L2TP is disabled, then when a client
sends a request to a VPN server, the server will reply to the NR2101 and the NR2101
will drop the request. When L2TP is enabled, the NR2101 will forward the reply from
the VPN server to the client that initiated the request, and the connection will
establish successfully.
Webserver WWAN Access
Select
Enable
to activate remote web server management.
DMZ IP
Enter the IP address of the default server which receives packets from ports that are
not specified in the
port forwarding table.
Port Forwarding
Port forwarding allows you to define the local servers to which the incoming services
will be forwarded. You can configure a new schedule rule by clicking
Add Entry
. You
can view the schedule rules by clicking
Get Entries
.
Serial
: This field displays the serial number of an individual port forwarding server
entry.
Private IP
: This field displays the IP address of the virtual server on the LAN.
Private Port
: A private port refers to the port number of a host when the packet is in
the LAN side.
Global Port
: A global port refers to the port number of the host when the same
packet is traveling in the WAN side.
Protocol
: Select the protocol (
TCP_UDP
,
TCP
,
UDP
, or
ICMP
) used to transport the
packets for which you want to apply the rule.
Delete
: Click
Delete
to delete an existing port forwarding rule.
Modify
: Click
Modify
to edit an existing port forwarding rule.
