3G Wireless Router User's Guide

Chapter 4 Tutorials
NBG410W3G Series User’s Guide
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Figure 22 DMZ Tutorial: ADVANCED > NAT Overview
This completes basic setup of your DMZ.
4.2.2 Advanced Setup
In this scenario the file server runs an FTP (File Transfer Protocol) download service. Since
FTP is not compatible with NAT, you can use the ALG (Application Layer Gateway) to
manage FTP. (See Chapter 18 on page 293 for more information.)
To allow FTP sessions to be initiated by users on the WAN, port-forwarding is also required
(see Section 12.5 on page 235 for more information) and for port-forwarding the file server
needs a static IP address.
ALG Setup
To turn on the ZyXEL Device’s FTP ALG, click ADVANCED > ALG. Select Enable FTP
ALG and click Apply.
Figure 23 DMZ Tutorial: ADVANCED > ALG