ZyXEL Communications ZyWall USG 2000 User Manual page 277

Table 87 Network > Virtual Server > Edit (continued)
LABEL
Mapped IP
User Defined
Original IP
Port Mapping
Type
Protocol Type
Original Port
Mapped Port
Original Start
Port
Original End
Port
Mapped Start
Port
Mapped End
Port
Add
corresponding
Policy Route
rule for NAT
1:1 mapping.
ZyWALL USG 2000 User's Guide
DESCRIPTION
Use the drop-down list box to indicate to which translated destination IP
address this virtual server forwards the packet. Choices are:
User Defined - this virtual server supports a specific IP address,
specified in the User Defined field.
HOST address - the drop-down box lists all the HOST address objects in
the ZyWALL. If you select one of them, this virtual server supports the
IP address specified by the address object.
Select Create Object to configure a new IP address object.
This field is available if Mapped IP is User Defined. Type the
translated destination IP address that this virtual server supports.
Use the drop-down list box to select how many original destination ports
this virtual server supports for the selected destination IP address
(Original IP). Choices are:
Any - this virtual server supports all the destination ports.
Port - this virtual server supports one destination port.
Ports - this virtual server supports a range of destination ports. You
might use a range of destination ports for unknown services or when one
server supports more than one service.
See Appendix B on page 875
This field is available if Mapping Type is Port or Ports. Select the
protocol (TCP, UDP, or Any) used by the service requesting the
connection.
This field is available if Mapping Type is Port. Enter the original
destination port this virtual server supports.
This field is available if Mapping Type is Port. Enter the translated
destination port if this virtual server forwards the packet.
This field is available if Mapping Type is Ports. Enter the beginning of
the range of original destination ports this virtual server supports.
This field is available if Mapping Type is Ports. Enter the end of the
range of original destination ports this virtual server supports.
This field is available if Mapping Type is Ports. Enter the beginning of
the range of translated destination ports if this virtual server forwards
the packet.
This field is available if Mapping Type is Ports. Enter the end of the
range of translated destination ports if this virtual server forwards the
packet. The original port range and the mapped port range must be the
same size.
If the server will initiate sessions to the clients, select this check box to
create a corresponding policy route so the ZyWALL uses the same public
IP address as the traffic's source address. This is called NAT 1:1.
Or you can click Policy Route to go to the screens where you can
manually configure a NAT 1:1 policy route for this virtual server.
See page 278 for an example of NAT 1:1.
Chapter 16 Virtual Servers
for some common port numbers.
277