User Guide

Example setup
Configuration
16 Network Security - NAT & PAT
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3EC 36231 ABAA TCZZA Ed. 01
16.4 NA(P)T Configuration Example
In the following a simple example is provided to show the working
and configuration of the STPro NA(P)T router.
It is based on a small LAN, consisting of the STPro and a small
number of PCs, all configured with static 'Net10' IP addresses and
an FTP server with IP address 10.0.0.1:
FTP Server
ATM
Network
Speed Touch Pro
with Firewall
Local LAN IP
address range:
10.0.0.0/8
10.0.0.1
Public
IP address::
192.6.11.10
Public
IP address::
10.0.0.138
The STPro NA(P)T router must redirect all external FTP connections
to 192.6.11.10 to 10.0.0.1 (the FTP server). Without adding a
static NA(P)T entry on the STPro 'NAT' page, external users would
make an FTP connection with the STPro itself instead of the FTP
server.
It is assumed that on the 'Routing' page the external public IP
address 192.6.11.10 is added with enabled translation (pat).
The following static NA(P)T entry must be added in the 'NAT
Settings' table:
 Inside address: 10.0.0.1
 Outside address: 192.6.11.10
 Inside/outside port: FTP = 21
 Protocol: FTP = tcp