B+B SmartWorx V3, Configuration Manual

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4. CONFIGURATION
4.8 NAT Configuration
To enter the Network Address Translation configuration, select the NAT menu item. NAT
(Network address Translation / Port address Translation - PAT) is a method of adjusting the net-
work traffic through the router default transcript and/or destination IP addresses often change
the number of TCP/UDP port for walk-through IP packets. The window contains sixteen entries
for the definition of NAT rules.
Item Description
Public Port Public port
Private Port Private port
Type Protocol selection
Server IP address IP address which will be forwarded incoming data
Table 30: NAT configuration
If necessary, you can set more than sixteen NAT rules – insert them into start up script
( Startup Script item in the Configuration section) by typing the following:
iptables -t nat -A napt -p tcp --dport [PORT\_PUBLIC] -j DNAT --to-destination
[IPADDR]:[PORT1\_PRIVATE]
Concrete IP address
[IPADDR]
and ports numbers
[PORT_PUBLIC]
and
[PORT_PRIVATE]
are filled up into square bracket.
The following items are used to set the routing of all incoming traffic from the PPP to the
connected computer.
Item Description
Send all remaining incoming
packets to default server By checking this item and setting the Default Server item
it is possible to put the router into the mode in which all
incoming data from GPRS will be routed to the computer
with the defined IP address.
Default Server IP Address Send all incoming packets to this IP addresses.
Table 31: Configuration of send all incoming packets
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