TRENDnet TDM-E400 - Manual (Page 128)

TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual
128
Follow these instructions to add an RDR rule (see steps 1-4 under
"The NAPT rule" on page 125 for specific instructions
corresponding to steps 1 and 2 below):
1. Display the NAT Rule – Add Page, select RDR as the Rule
Flavor, if necessary, and enter a Rule ID.
2. Select the interface on which this rule will be effective.
3. Select a protocol to which this rule applies, or choose ANY.
This selection specifies which type of Internet communication
will be subject to this translation rule. You can select ANY if the
rule applies to all data. Or, select TCP, UDP, ICMP, or a
number from 1-255 that represents the Internet Assigned
Numbers Authority (IANA)-specified protocol number.
4. In the Local Address From and Local Address To fields, type
the same private IP address, or the lowest and highest
addresses in a range:
f If you type the same IP address in both fields, incoming
traffic that matches the criteria you specify in steps 5 and 6
will be redirected to that IP address.
f If you type a range of addresses, incoming traffic will be
redirected to any available computer in that range. This
option would typically be used for load balancing, whereby
traffic is distributed among several redundant servers to
help ensure efficient network performance.
These addresses should correspond to private addresses
already in use on your network (either assigned statically to
your PCs or assigned dynamically using DHCP, as discussed
in “Quick Start Part 2 — Configuring Your Computers”).
5. In the Global Address From and Global Address To fields,
type the public IP address assigned to you by your ISP.
If you have multiple WAN (PPP) interfaces, note that this rule
will not be enforced for data that arrives on WAN interfaces not
specified here.
If you have multiple WAN interfaces and want the rule to be
enforced on more than one of them (or all), enter a range of IP
addresses that includes them.
6. From the Destination Port From and Destination Port To
drop-down lists, select the port type of the computer you are
making publicly available, or leave them set to Any other
port.
If you want to specify a port type that is not available in the
drop-down lists, you can instead type the port ID number in text
boxes to the right. You can specify a range using the From/To
fields if you want the rule to apply to a range of port types, or
enter the same port number in both fields.
If you leave the selection set to Any other port, then incoming
data will not be checked for the destination port type.