ZyXEL Communications NBG410W3G Series User Manual

Chapter 4 Tutorials

NBG410W3G Series User’s Guide

Figure 22   DMZ Tutorial: ADVANCED > NAT Overview 

This completes basic setup of your DMZ.

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 

 for more information.)

To allow FTP sessions to be initiated by users on the WAN, port-forwarding is also required 
(see 

 for more information) and for port-forwarding the file server 

needs a static IP address.

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